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Scholarly Interest Report
         
Satish Nagarajaiah
Professor
Professor in Civil and Environmental Engineering
 
e-mail:Satish.Nagarajaiah@rice.edu
 
  • Ph.D. Structural Engineering (1990) State Univ. of New York, Buffalo, New York
  • M. S. Structural Engineering (1982) Indian Institute of Science, India
  • B. S. Structural Engineering (1980) Bangalore University, India
 
Primary Department
   Department of Civil and Environmental Engineering
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Department Affiliations
 
  • Department of Materials Science and NanoEngineering
  • Department of Mechanical Engineering
  • Smalley Institute for Nanoscale Science and Technology
  •  
    Websites
     Satish Nagarajaiah Group Web Page
     Satish Nagarajaiah Group Web Site
     Satish Nagarajaiah
     Further Information
     
    Research Areas
     Satish Nagarajaiah’s research interests are in the areas of structural dynamic systems; seismic protection; earthquake engineering; smart structures; vibration control; system identification; structural monitoring; structural integrity assessment; offshore structures and applied Nanotechnology.
     

    Reserach Activities and Contributions

     

    RESEARCH CONTRIBUTIONS


    Dr. Satish Nagarajaiah's current research focuses on seismic protection with new and novel negative stiffness systems, variable stiffness systems, smart tuned mass dampers, structural health monitoring of deepwater risers and fatigue damage detection due to vortex induced vibrations, and nanosensors in projects funded by the National Science Foundation, Department of Energy, Air Force Office of Scientific Research, Office of Naval Research and other private industries.


    Satish Nagarajaiah has made many notable contributions to structural engineering, structural dynamics, seismic protection, earthquake engineering and smart structures. His most notable contributions are in the development of new modeling techniques and algorithms for nonlinear dynamic analysis of base isolated structures, structural control, system identification, structural health monitoring, and smart multifunctional materials for sensing. 


    Satish Nagarajaiah has developed new analytical models for elastomeric (including instability effects) and sliding bearings (biaxial friction interfaces) and computational approaches (semi-implicit time stepping method) for nonlinear dynamic analysis of three dimensional based isolated structures, which enabled engineers to analyze and design safer base isolated buildings around the world. He developed the numerical method for solving the difficult problem of biaxial friction that leads to stiff differential equations. The outcome of such transformative development of advanced modeling and numerical techniques for nonlinear dynamic analysis of base isolated structures is the computer software 3D-BASIS that is used widely by academics and design professionals around the world for the past two decades. 3D-BASIS has been used for analysis and design of numerous base isolated structures within the United States and in other countries such as Turkey, Greece, Japan, China, and India. Landmark structures where 3D-BASIS was used are the New San Francisco International Airport and the San Francisco General Services Building, both of which are supported on friction pendulum bearings. 3D-BASIS enabled implementation of base isolation in structures in the United States from its early stages of inception, particularly in areas of high seismicity.


    Satish Nagarajaiah’s recent research thrust in seismic/vibration isolation and smart structures has focused on semiactive, adaptive, passive, variable stiffness and damping structural systems. National Science Foundation recognized his contributions to smart structures with adaptive/variable stiffness systems by awarding him the NSF CAREER award in 1998. His group has performed widely cited research on adaptive/variable stiffness structural systems and smart tuned mass dampers to date by making sustained contributions. Smart/adaptive tuned mass dampers with variable stiffness systems that he and his team developed lead to full scale implementations in China.  


    Satish Nagarajaiah’s research thrust in system identification and control has centered on the development of new time-frequency algorithms. His group has also developed advanced real time fault detection and system identification algorithms for structural, actuator and sensor failure, specifically designed for implementation on the international space station by NASA.


    In a recently concluded Institute/center funded by NASA (Texas Institute of Intelligent Bio-Nano Materials and Structures for Aerospace Vehicles—in which he served as co-principal investigator) his team conducted widely cited research on nanocomposite based strain sensing—one of the first in the world to explore the potential of macrostrain sensing using nanomaterials. The pioneering contribution was conceptual development of multifunctional materials that can enhance strength and simultaneously perform strain sensing, i.e., the material itself acts as multi-directional/multi-locational strain sensor; thus, eliminating the need for collection of external strain sensors. He and his collaborators have poineered the development of noncontact laser based strain sensing and monitoring using advanced nanomaterials.


    Dr. Nagarajaiah is a world leader in advanced protective systems, vibration isolation and seismic protection in the form of adaptive stiffness systems and smart tuned mass dampers, that have led to full-scale implementation. National Science Foundation has recognized his contributions to adaptive stiffness structural systems by awarding the prestigious NSF CAREER award in 1998. Recently he led a large NSF project of five universities and multiple investigators and invented/developed a new adaptive negative stiffness structural system that significantly enhances seismic protection of buildings and bridges, for which he and his team was awarded the Moissieff Award by ASCE in 2015. 


    He is also world’s leading researcher in structural system identification algorithms based on time-frequency, sparse and low rank methods based on statistical learning. He has presented several invited keynote lectures at world conferences, and presented numerous invited lectures at universities around the world.


    Although most of his group’s research efforts are theoretical and numerical, the group believes in small scale experimental verification and performs innovative testing (small % of total effort). The group’s key research contributions have resulted in widely cited journal papers and several U.S. patents. Full details of research projects and journal/conference publications can be found at satishnagarajaiah.rice.edu.


    Satish Nagarajaiah enjoys research immensely. He works independently, but values key collaborations within the department, within Rice University and with researches from all around the world. He has ongoing collaborations with researchers in Civil Engineering, Mechanical Engineering, Material Science, and Chemistry at Rice. In his recent NSF NEES project he collaborates with researchers from University at Buffalo, RPI, and UCLA. He has ongoing collaborations with researchers in Europe, India, and China. He has mentored numerous graduate and undergraduate students, and post-doctoral researchers. His former students/group members have gone on to successful careers in the academia (currently at assistant and associate professor level), in the industry and in some cases hold leadership positions at the level vice president, and in government research laboratories such as the Caltech Jet Propulsion Laboratory and Los Alamos Laboratory.


    PROFESSIONAL CONTRIBUTIONS


    Satish Nagarajaiah's editorial activities include service as the Managing Editor of the Journal of Structural Engineering [ASCE International journal] (2011—present), Editor of the Structural Control and Health Monitoring [Wiley International Journal] (2008—present) and Editor-in-chief [North America] of Structural Monitoring and Maintenance [Techno-press International Journal] (2014—present). ASCE Structural Engineering Institute (SEI) elected him as an inaugural fellow in 2012 for his service to structural engineering community. He currently serves on the ASCE SEI board of the governors. He served as the chair/vice-chair/secretary/member (2006-to-2012) of ASCE, SEI, Technical Activities Division Executive Committee (TAD-ExCom). He served as a member of the board of directors of the international association of structural control and monitoring (2008-2012). He served as the President of the U.S. panel on structural control and monitoring (2006-2008). He was the founding chair of ASCE structural health monitoring committee (2004-2006), ASCE-Engineering Mechanics Institute, and chair of the structural control committee (1998-2002), ASCE Structural Engineering Institute. For further details visit his website satishnagarajaiah.rice.edu.


    SUMMARY


    Dr. Satish Nagarajaiah enjoys his work immensely and believes in high standards of scientific excellence and integrity. He believes in educating and providing access to advanced knowledge to aspiring young minds. He is always ready to serve and work hard toward a collective future. He has carved out an international reputation built on imagination, creativity, ingenuity, innovation, and sustained effort in his chosen field of seismic base isolation, smart structures with adaptive/variable stiffness systems, smart tuned mass dampers, system identification, sensing and monitoring. His work always aspires to create innovative and transformative knowledge that results in practical benefit to the society.

     

    Research Statement

     

    Dr. Satish Nagarajaiah's recent research focuses on seismic protection with new and novel adaptive negative stiffness systems, variable stiffness systems, smart tuned mass dampers, system identification, structural health monitoring of deepwater risers and fatigue damage detection due to vortex induced vibrations, and nanosensors in projects funded by the National Science Foundation, Department of Energy, Air Force Office of Scientific Research, office of naval research and other private industries.


    Dr. Satish Nagarajaiah's research is focused on (1) structural dynamic systems, vibration control, system identification, structural health monitoring and (2) nanomechanics and nanosensors. The reserarch group is (1) studying the fundamental behavior of dynamic systems theoretically, analytically and experimentally; (2) analytically studying nonlinear and time varying strucutral dynamic systems; (3) developing new structural system identification and structural montoring algorithms and adaptive nonlinear control algorithms and time varying control algorithms (based on time-frequency techniques, sparse and low rank methods) for innovative structures with reconfigurable adaptive/variable stiffness systems, and smart tuned mass dampers.
     
    Teaching Areas
     Structural Dynamic Systems, Computational/Matrix Methods in Structural Mechanics, Mechanics of Solids and Structures
     
    Selected Publications
     Abstracts
     

    B. Basu, S. Nagarajaiah, A. Chakraborty "Online Identification of Linear Time-Varying Stiffness of Structural Systems by Wavelet Analysis." International Journal of Structural Health Monitoring, 7 (2008) : 21-36.

     
     Refereed articles
     

    Chang, J., Liu, W.B., Hu, H., and Nagarajaiah, S. "Improved independent component analysis based modal identification of higher damping structures." Measurement, 88 (2016) : 402-416.

     
     

    Chang, J., and Nagarajaiah, S. "Quantum-Behaved Particle Swarm Optimization-Based Structural Modal Parameter Identification Under Ambient Excitation." International Journal of Structural Stability and Dynamics, 16(5) (2016)

     
     

    Chen, L., Sun, L.M., and Nagarajaiah, S. "Cable vibration control with both lateral and rotational dampers attached at an intermediate location." Journal of Sound and Vibration, 377 (2016) : 38-57.

     
     

    Dinh, V.N., Basu, B., and Nagarajaiah, S. "Semi-active control of vibrations of spar type floating offshore wind turbines." Smart Structures and Systems, 18(4) (2016) : 683-705.

     
     

    Fujino, Y., and Nagarajaiah, S. "Kobori award winner 2012." Structural Control and Health Monitoring, 23(2) (2016) : 196-197.

     
     

    Karami, K., Nagarajaiah, S., and Amini, F. "Developing a smart structure using integrated DDA/ISMP and semi-active variable stiffness device." Smart Structures and Systems, 18(5) (2016) : 955-982.

     
     

    Li, H.N., Qu, C., Huo, L.S., and Nagarajaiah, S., "Equivalent bilinear elastic single degree of freedom system of multi-degree of freedom structure with negative stiffness." Journal of Sound and Vibration, 365 (2016) : 1-14.

     
     

    Nagarajaiah, S. and Erazo, K. "Structural monitoring and identification of civil infrastructure in the United States." Structural Monitoring and Maintenance, 3(1) (2016) : 51-69.

     
     

    Sarlis, A.A., Pasala, D.T.R., Constantinou, M.C., Reinhorn, A.M., Nagarajaiah, S., and Taylor, D.P. "Negative Stiffness Device for Seismic Protection of Structures: Shake Table Testing of a Seismically Isolated Structure." Journal of Structural Engineering, 142(5) (2016)

     
     

    Sonmez, E., Nagarajaiah, S., Sun, C., and Basu, B. "A study on semi-active Tuned Liquid Column Dampers (sTLCDs) for structural response reduction under random excitations." Journal of Sound and Vibration, 362 (2016) : 1-15.

     
     

    Sun, P., Bachilo, S.M., Nagarajaiah, S. and Weisman, R.B. "Toward Practical Non-Contact Optical Strain Sensing Using Single-Walled Carbon Nanotubes." ECS Journal of Solid State Science and Technology, 5(8) (2016) : M3012-M3017.

     
     

    Vemuru, V.S.M., Nagarajaiah, S., and Mosqueda, G. "Coupled horizontal-vertical stability of bearings under dynamic loading." Earthquake Engineering and Structural Dynamics, 45(6) (2016) : 913-934.

     
     

    Yang, Y., Li, S., Nagarajaiah, S., Li, H., and Zhou, P. "Real-Time Output-Only Identification of Time-Varying Cable Tension from Accelerations via Complexity Pursuit." Journal of Structural Engineering, 142 (2016)

     
     

    Yang, Y., and Nagarajaiah, S. "Dynamic Imaging: Real-Time Detection of Local Structural Damage with Blind Separation of Low-Rank Background and Sparse Innovation." Journal of Structural Engineering, 142(2) (2016)

     
     

    Yang, Y., and Nagarajaiah, S. "Harnessing data structure for recovery of randomly missing structural vibration responses time history: Sparse representation versus low-rank structure." Mechanical Systems and Signal Processing, 74 (2016) : 165-182.

     
     

    Zou, K., and Nagarajaiah, S., "Closed-form criterion for convergence and stability of pseudo-force method for nonlinear dynamic analysis." Nonlinear Dynamics, 86(2) (2016) : 1035-1046.

     
     

    Attary, N.; Symans, M.; Nagarajaiah, S.; et al. "Performance Evaluation of Negative Stiffness Devices for Seismic Response Control of Bridge Structures via Experimental Shake Table Tests." Journal of Earthquake Engineering, 19(2) (2015) : 249-276.

     
     

    Attary, Navid; Symans, Michael; Nagarajaiah, Safish; et al. "Experimental Shake Table Testing of an Adaptive Passive Negative Stiffness Device within a Highway Bridge Model." Earthquake Spectra, 31(4) (2015) : 2163-2194.

     
     

    Attary, Navid; Symans, Michael; Nagarajaiah, Satish; et al. "Numerical simulations of a highway bridge structure employing passive negative stiffness device for seismic protection." Earthquake Engineering & Structural Dynamics , 44(6) (2015) : 973-995.

     
     

    Chen, Lin; Sun, Limin; Nagarajaiah, Satish "Cable with discrete negative stiffness device and viscous damper: passive realization and general characteristics." Smart Structures and Systems, 15(3) (2015) : 627-643.

     
     

    Eason, R. P.; Sun, C.; Dick, A. J.; et al. "Steady-state response attenuation of a linear oscillator-nonlinear absorber system by using an adjustable-length pendulum in series: Numerical and experimental results." Journal of Sound and Vibration , 344 (2015) : 332-344.

     
     

    Nagarajaiah, Satish; Yang, Yongchao "Blind modal identification of output-only non-proportionally-damped structures by time-frequency complex independent component analysis." Smart Structures and Systems, 15(3) (2015) : 81-97.

     
     

    Pasala, D. T. R.; Sarlis, A. A.; Reinhorn, A. M.; et al. "Apparent Weakening in SDOF Yielding Structures Using a Negative Stiffness Device: Experimental and Analytical Study." Journal of Structural Engineering , 141(4) (2015)

     
     

    Sun, Peng; Bachilo, Sergei M.; Weisman, R. Bruce; et al. "Carbon nanotubes as non-contact optical strain sensors in smart skins." Journal of Strain Analysis for Engineering Design , 50(7) (2015) : 505-512 .

     
     

    Yang, Y. C.; Nagarajaiah, S.; Ni, Y. Q. "Data compression of very large-scale structural seismic and typhoon responses by low-rank representation with matrix reshape." Structural Control & Health Monitoring , 22(8) (2015) : 1119-1131.

     
     

    Yang, Yongchao; Nagarajaiah, Satish "Output-only modal identification by compressed sensing: Non-uniform low-rate random sampling." Mechanical Systems and Signal Processing, 56-57 (2015) : 15-34 .

     
     

    Zou, Keguan; Nagarajaiah, Satish "An analytical method for analyzing symmetry-breaking bifurcation and period-doubling bifurcation." Communications in Nonlinear Science and Numerical Simulation , 22 (2015) : 780-792.

     
     

    Zou, Keguan; Nagarajaiah, Satish "Study of a piecewise linear dynamic system with negative and positive stiffness." Communications in Nonlinear Science and Numerical Simulation , 22(1-3) (2015) : 1084-1101 .

     
     

    Zou, Keguan; Nagarajaiah, Satish "The solution structure of the Duffing oscillator's transient response and general solution." Nonlinear Dynamics Volume, 81(1-2) (2015) : 621-639 .

     
     

    Zou, Keguan; Nagarajaiah, Satish; Dick, Andrew "Asymmetric Solutions of SDOF System with Wire Rope Vibration Isolator Subjected to Harmonic Excitation." International Journal of Structural Stability and Dynamics, 15(6) (2015)

     
     

    Arrigan, J., Huang, C. J., Staino, A., Basu, B., and Nagarajaiah, S, "A frequency tracking semi-active algorithm for control of edgewise vibrations in wind turbine blades." Smart Structures and Systems, 13(2) (2014) : 177-201.

     
     

    Contreras, M. T., Pasala, D. T. R., and Nagarajaiah, S. "Adaptive length SMA pendulum smart tuned mass damper performance in the presence of real time primary system stiffness change." Smart Structures and Systems, 13(2) (2014) : 219-233.

     
     

    Eason, R. P., Dick, A. J., and Nagarajaiah, S. "Numerical investigation of coexisting high and low amplitude responses and safe basin erosion for a coupled linear oscillator and nonlinear absorber system." Journal of Sound and Vibration, 333(15) (2014) : 3490-3504.

     
     

    Huang, C. J., and Nagarajaiah, S. "Output-Only Structural Health Monitoring for Deepwater Risers: Experimental Study of Wavelet Modified SOBI and Distributed Force Index Algorithm." International Journal of Structural Stability and Dynamics, 14(5), DOI: 10.1142/S0219455414400100 (2014) : 1440010.

     
     

    Nagarajaiah, S., and Jung, H. J. "Smart tuned mass dampers: recent developments." Smart Structures and Systems, 13(2) (2014) : 173-176.

     
     

    Pasala, D. T. R., Sarlis, A. A., Reinhorn, A. M., Nagarajaiah, S., Constantinou, M. C., and Taylor, D. "Simulated Bilinear-Elastic Behavior in a SDOF Elastic Structure Using Negative Stiffness Device: Experimental and Analytical Study." Journal of Structural Engineering, ASCE,, 140(2): 04013049, doi: 10.1061/(ASCE)ST.1943-541X.0000830 (2014)

     
     

    Pasala, D. T. R., and Nagarajaiah, S. "Adaptive-length pendulum smart tuned mass damper using shape-memory-alloy wire for tuning period in real time." Smart Structures and Systems, 13(2) (2014) : 203-217.

     
     

    Sun, C., Nagarajaiah, S., and Dick, A. J. "Experimental investigation of vibration attenuation using nonlinear tuned mass damper and pendulum tuned mass damper in parallel." Nonlinear Dynamics, 78(4) (2014) : 2699-2715.

     
     

    Sun, C., Nagarajaiah, S., and Dick, A. J. "Family of smart tuned mass dampers with variable frequency under harmonic excitations and ground motions: closed-form evaluation." Smart Structures and Systems, 13(2) (2014) : 319-341.

     
     

    Sun, C., and Nagarajaiah, S. "Study on semi-active tuned mass damper with variable damping and stiffness under seismic excitations." Structural Control & Health Monitoring, 21(6) (2014) : 890-906.

     
     

    Vemuru, V. S. M., Nagarajaiah, S., Masroor, A., and Mosqueda, G. "Dynamic Lateral Stability of Elastomeric Seismic Isolation Bearings." Journal of Structural Engineering, ASCE, 140(8): A4014014, DOI: 10.1061/(ASCE)ST.1943-541X.0000955 (2014)

     
     

     Chen, B. and Nagarajaiah, S. “Observer-based structural damage detection using genetic algorithm,” Structural Control and Health Monitoring, DOI: 10.1002/stc.512, 20 (4): 520-531 (2013).

     
     

    Eason, R.P., Sun, C., Dick, A.J., Nagarajaiah, S. “Attenuation of a linear oscillator using a nonlinear and a semi-active tuned mass damper in series,” Journal of Sound and Vibration, DOI: 10.1016/j.jsv.2012.07.048, 332 (1), 154-166, (2013).

     
     

    Pasala, D., Sarlis, A., Reinhorn, A., Nagarajaiah, S., Constantinou, M., and Taylor, D. "Simulated Bilinear-Elastic Behavior in a SDOF Elastic Structure Using Negative Stiffness Device: Experimental and Analytical Study,” Journal of Structural Engineering, doi: 10.1061/(ASCE)ST.1943-541X.0000830, 140(2): Article No. 04013049  (2013).

     
     

    Pasala, D.T.R., Sarlis, A.A., Nagarajaiah, S., Reinhorn, A.M., Constantinou, M.C. and Taylor, D. “Adaptive Negative Stiffness: A New Structural Modification Approach for Seismic Protection”, Journal of Structural Engineering, ASCE, DOI10.1061/(ASCE)ST.1943-541X.0000615, 139 (7): 1112-1123 (2013).

     
     

    Ray, T., Reinhorn, A. M., Nagarajaiah, S. “Nonlinear elastic and inelastic spectra with inherent and supplemental damping”, Earthquake Engineering and Structural Dynamics, DOI: 10.1002/eqe.2318, 42(14): 2151 - 2165  (2013).

     
     

    Sarlis, A.A., Pasala, D.T.R., Constantinou, M.C., Reinhorn, A.M., Nagarajaiah, S., and Taylor, D. “Negative stiffness device for seismic protection of structures” Journal of Structural Engineering, ASCE, DOI10.1061/(ASCE)ST.1943-541X.0000616, 139 (7):  1124-1133 (2013).

     
     

    Sun, C., Eason, R.P., Nagarajaiah, S., Dick, A.J. “Hardening Düffing oscillator attenuation using a nonlinear TMD, a semi-active TMD and multiple TMD,” Journal of Sound and Vibration, DOI: 10.1016/j.jsv.2012.10.016, 332 (4), 674-686, (2013).

     
     

    Yang, Y., Nagarajaiah, S. “Blind denoising of structural vibration responses with outliers via principal component pursuit,” Structural Control and Health Monitoring, doi: 10.1002/stc.1624, (2013).

     
     

    Yang, Y., Nagarajaiah, S. “Blind identification of damage in time-varying system using independent component analysis with wavelet transform,” Mechanical Systems and Signal Processing, DOI: 10.1016/j.ymssp.2012.08.029,   (2012).

     
     

    Yang, Y., Nagarajaiah, S. “Blind modal identification of output-only structures in time-domain based on complexity pursuit”, Earthquake Engineering and Structural Dynamics, DOI: 10.1002/eqe.2302, 42(13):1885–1905 (2013).

     
     

    Yang, Y., Nagarajaiah, S. “Output-only modal identification with limited sensors using sparse component analysis,” Journal of Sound and Vibration, doi: 10.1016/j.jsv.2013.04.004, 332(19): 4741–4765 (2013).

     
     

    Yang, Y., Nagarajaiah, S. “Structural damage identification via blind feature extraction and sparse representation classification,” Mechanical Systems and Signal Processing, doi: 10.1016/j.ymssp.2013.09.009, 45(1): 1 – 23 (2014). 

     
     

    Yang, Y., and Nagarajaiah, S. “Data compression of structural seismic responses using principled independent component analysis,” Journal of Structural Engineering, ASCE, Accepted, September (2013).

     
     

    Yang, Y., and Nagarajaiah, S. “Time-‐frequency Blind Source Separation Framework Using Independent Component Analysis for Output‐only Modal Identification of Highly-Damped‐damped Structures,” Journal of Structural Engineering, ASCE, doi:10.1061/(ASCE)ST.1943-541X.0000621, 139(10):1780–1793 (2013).

     
     

    Dharap, P., Koh, B.H.., and Nagarajaiah, S. "Structural health monitoring using ARMarkov observers." Journal of Intelligent Material Systems and Structures, 17 (6) (2006) : 469-481.

     
     

    Koh, B.H., Dharap, P., Nagarajaiah, S., and Phan, M.Q. "Real-time Structural Damage Monitoring by Input Error Function." Journal of American Institute of Aeronautics and Astronautics, 43 (8) (2005) : 1808-1814.

     
     

    Koh, B.H., Li, Z., Dharap, P., Nagarajaiah, S., and Ohan, M.Q. "Actuator Failure Detection through Interaction Matrix Formulation." Journal of Guidance, Control, and Dynamics, 28 (5) (2005) : 895-901.In Press

     
     

    Li, Z., Dharap, P., Sharma, P., Nagarajaiah, S., and Yakobson, B. "A continuum field model of defect formation in single walled carbon nanotubes." Journal of Applied Physics, 97 (7) (2005) : 074303-1 to 8.

     
     

    Li, Z., Koh, B., and Nagarajaiah, S. "Detecting sensor failure via decoupled error function and inverse input-output model." Journal of Engineering Mechanics (2007) In Press

     
     

    Li, Z., Koh, B., and Nagarajaiah, S. "Detecting sensor failure via decoupled error function and inverse input-output model." Journal of Engineering Mechanics (2007) Submitted

     
     

    Nagarajaiah, S. and Narasimhan, S., "Seismic control of smart base isolated buildings with new semiactive variable damper." Earthquake Engineering Structural Dynamics (Pub online 12 Dec 2006) In Press

     
     

    Nagarajaiah, S., Mao Y., and Saharabudhe, S. "Seismic response spectra of smart sliding isolated structures with variable stiffness SAIVS system: Experimental Verification." Smart Structures and Systems Journal (2007) Submitted

     
     

    Nagarajaiah, S., Mao, Y.Q., and Sahasrabudhe, S "Nonlinear, seismic response spectra of smart sliding isolated structures with independently variable MR dampers and variable stiffness SAIVS system." J. of Struct. Eng. and Mech., 24 (3), (2006) : 375-393.

     
     

    Nagarajaiah, S., and Nadathur, V. "Semi-active control of wind excited building with variable stiffness TMD using short time Fourier transform." Journal of Engineering Structures, 27 (2005) : 431-441.

     
     

    Nagarajaiah, S., and Narasimhan, S. "Smart base isolated benchmark building Part II." Journal of Structural Control and Health Monitoring, 13 (2-3) (2006) : 589-604.

     
     

    Nagarajaiah, S., and Saharabudhe, S. "Seismic response control of smart sliding isolated buildings using variable stiffness systems:Experimental and numerical study." Earthquake Engineering and Structural Dynamics, 35 (2) (2006) : 177-197.

     
     

    Narasimhan, S., Nagarajaiah, S., Gavin, H., and Johnson, E.A. "Smart Base Isolated Benchmark Building Part I." Journal of Structural Control and Health Monitoring, 13 (2-3) (2006) : 573-588.

     
     

    Narasimhan, S., and Nagarajaiah, S. "STFT Algorithm for Semiactive Control of Base Isolated Buildings with Variable Stiffness Isolation Systems Subjected to Near Fault Earthquakes." Journal of Engineering Structures, 27 (2005) : 514-523.

     
     

    Narasimhan, S., and Nagarajaiah, S. "Smart base isolated buildings with variable friction systems: H(infinity) controller and SAIVF device." Earthquake Eng. and Struc. Dyn. Journal, 35(8) (2006) : 375-393.

     
     

    Saharabudhe, S., and Nagarajaiah, S. "Effectiveness of variable stiffness systems in base isolated bridges subjected to near fault earthquakes: Experimental Study." Int. journal of Intelligent Material Systems and Structures, 16 (9) (2005) : 743-756.

     
     

    Saharabudhe, S., and Nagarajaiah, S. "Seismic response control of sliding isolated bridges with MR dampers: Experimental and numerical study." Earthquake Engineering and Structural Dynamics Journal, 34 (7) (2005) : 965-983.

     
     

    Sahasrabudhe, S., and Nagarajaiah, S. "Experimental study of sliding isolated buildings with MR dampers in near fault earthquakes." Journal of Struct. Eng, ASCE, 131 (7) (2005) : 1025-1034.

     
     

    Sullivan, M., Nagarajaiah, S., Griffith, E., and Bedrossian, N. "State Estimation of International Space Station Centrifuge Rotor with Incomplete Knowledge of Disturbance Inputs." Journal of Aerospace EngineeringSubmitted

     
     

    Wilkerson, S., Nagarajaiah, S. "Optimal Offloading Configuration of Spread-Mooreed FPSO." Journal of Offshore Mechanics and Arctic EngineeringSubmitted

     
     

    Dharap, P., Li, Z., Nagarajaiah, S., and Barrera, E. "Nanotube film based on SWNT for macrostrain sensing." Nanotechnology Journal, 15(3) (2004) : 379-382.

     
     

    Li, Z., Dharap, P., Nagarajaiah, S., Barrera, E., and Kim J.D. "Carbon Nanofilm Sensor." Advanced Materials Journal, 16(7) (2004) : 640-643.

     
     

    Li, Z., Dharap, P., Nagarajaiah, S., Nordgren, R., and Yackobson, B. "Nonlinear Analysis of a SWNT over a Bundle of Nanotubes." Int. Journal of Solids and Structures, 41 (2004) : 6925-6936.

     
     

    Nadathur, V. and Nagarajaiah, S. "Wind response control of building with variable stiffness tuned mass damper using empirical mode decomposition and Hilbert Transform." Journal of Engineering Mechanics, 130(4) (2004) : 451-458.

     
     

    Nagarajaiah, S. and Li, Z. "Time segmented least squares identification of base isolated buildings." Soil Dynamics and Earthquake Engineering Journal, 24 (2004) : 577-586.

     
     

    Prasad, D., Li, Z., Nagarajaiah, S., and Barrera, E. "Flexural Strain Sensing using Carbon Nanotube film." Sensor Review Journal, 24(3) (2004) : 271-273.

     
     Articles
     

    Contreras, M., Nagarajaiah, S. and Narasimhan, S. " Real time detection of stiffness change using a radial basis function augmented observer formulation," Smart Materials and Structures, 20 035013, DOI: 10.1088/0964-1726/20/3/035013 (2011).

     
     

    Arrigan, J., Prakash, V., Basu, B. and Nagarajaiah, S. "Control of Flapwise Vibrations in Wind Turbine Blades using semi-active tuned mass dampers" Structural Control & Health Monitoring, 18 (8), 840-851, DOI: 10.1002/stc.404 (2011).

     
     

    Chen, B. and Nagarajaiah, S. “Observer-based structural damage detection using genetic algorithm,” Structural Control and Health Monitoring, DOI: 10.1002/stc.512 (2011).

     
     

    Eason, R.P., Sun, C., Dick, A.J., Nagarajaiah, S. “Attenuation of a linear oscillator using a nonlinear and a semi-active tuned mass damper in series,” Journal of Sound and Vibration 332 (1), 154-166, 2013.

     
     

    Huo, L., Song, G., Nagarajaiah, S. and Li H., “Semi-active vibration suppression of a space truss structure using a fault tolerant controller,” Journal of Vibration and Control, October 7, 2011; doi: 10.1177/1077546311421514, 18(10), 1436-1453 (2012).

     
     

    Pasala, D. T. R., Nagarajaiah, S., and Grigoriadis, K. M., “Tracking Control of Variable Stiffness Hysteretic-Systems Using Linear-Parameter-Varying Gain-Scheduled Controller,” Smart Structures and Systems, 9(4), 373-392 (2012).

     
     

    Pasala, D.T.R., Sarlis, A.A., Nagarajaiah, S., Reinhorn, A.M., Constantinou, M.C. and Taylor, D. “Adaptive Negative Stiffness: A New Structural Modification Approach for Seismic Protection”, Journal of Structural Engineering, ASCE, DOI10.1061/(ASCE)ST.1943-541X.0000615, Posted ahead of print, 3 Apr (2012).

     
     

    Sarlis, A.A., Pasala, D.T.R., Constantinou, M.C., Reinhorn, A.M., Nagarajaiah, S., and Taylor, D. “Negative stiffness device for seismic protection of structures” Journal of Structural Engineering, ASCE, DOI10.1061/(ASCE)ST.1943-541X.0000616, Posted ahead of print, 11 Apr (2012).

     
     

    Srivastava R. K.,. Vemuru V. S. M., Zeng Y., Vajtai R., Nagarajaiah S., Ajayan P.M., Srivastava A. " The strain sensing and thermal–mechanical behavior of flexible multi-walled carbon nanotube polystyrene composite films." Carbon, 49(12), 3928-3936, DOI:10.1016/j.carbon.2011.05.031 (2011).

     
     

    Sun, C., Eason, R.P., Nagarajaiah, S., Dick, A.J. “Hardening Düffing oscillator attenuation using a nonlinear TMD, a semi-active TMD and multiple TMD,” Journal of Sound and Vibration, 332 (4), 674-686, 2013.

     
     

    Suresh S., Narasimhan S., and Nagarajaiah S. "Direct adaptive neural controller for the active control of earthquake-excited nonlinear base-isolated buildings," Structural Control & Health Monitoring, 19(3), 370-384, DOI: 10.1002/stc.437 (2012).

     
     

    Withey, P.A., Vemuru, V.S.M., Bachilo, S. M., . and Nagarajaiah, S. and Weisman, R. B. “Strain Paint: Noncontact Strain Measurement Using Single-Walled Carbon Nanotube Composite Coatings,” Nano Letters, ACS, DOI: 10.1021/nl301008m, 12(2), 3497-3500 (2012).

     
     

    Yang, Y., Nagarajaiah, S. “Blind identification of damage in time-varying system using independent component analysis with wavelet transform,” Mechanical Systems and Signal Processing, In Press, Available online 29 September (2012).

     
     

    Yang, Y., and Nagarajaiah, S. “Time-‐frequency Blind Source Separation Framework Using using Independent Component Analysis for Output‐only Modal Identification of Highly-Damped‐damped Structures,” Journal of Structural Engineering, ASCE, Special Issue on Structural Health Monitoring, accepted with minor revisions (2012).doi: 10.1061/(ASCE)ST.1943-541X.0000621, Posted ahead of print, 11 Apr (2012).

     
     

    Basu, B. and Nagarajaiah, S. "A Multi-Scale Wavelet-LQR Controller for Linear Time Varying Systems" Journal of Engineering Mechanics, ASCE, 136(9), 1143-1151, DOI: 10.1061/(ASCE)EM.1943-7889.0000162 (2010).

     
     

    Hemtej, G., Vemuru, V. S. M., Kumar, A., Botello-Mendez, A., Vajtai, R., Terrones, M., Nagarajaiah S., Ajayan, P. M. "Flexible Piezoelectric ZnO-paper Nanocomposite Strain Sensor" Small, 6(15), 1641-1646, DOI: 10.1002/smll.201000254 (2010).

     
     

    Suresh, S., Narasimhan, S., Nagarajaiah, S., and Sundararajan, N. “Fault-tolerant adaptive control of nonlinear base isolated buildings using EMRAN”. Engineering Structures, 32(8), 2477-2487, DOI: 10.1016/j.engstruct.2010.04.024 (2010).

     
     

    Agarawal, A., Nagarajaiah, S., "Benchmark structural control problem for a seismically excited highway bridge: Phase I and II," Structural Control & Health Monitoring, 16 (5), 503-508, DOI: 10.1002/stc.336 (2009).

     
     

    Agarawal, A., Tan, P., Nagarajaiah, S., and Zhang, J. "Benchmark structural control problem for a seismically excited highway bridge - Part I: Phase I Problem definition," Structural Health Monitoring and Control, 16 (5), 509-529, DOI: 10.1002/stc.301 (2009).

     
     

    Nagarajaiah, S. "Adaptive Passive, Semiactive, Smart Tuned Mass Dampers: Identification and Control using Empirical Mode Decomposition, Hilbert transform, and Short-Term Fourier transform," Structural Control & Health Monitoring, 16(7-8), 800-841, DOI: 10.1002/stc.349 (2009).

     
     

    Nagarajaiah, S., Narasimhan, S., Agrawal, A.K., and Ping, T. ”Benchmark structural control problem for a seismically excited highway bridge - Part III: Phase II Sample controller for the fully base-isolated case,” Structural Control and Health Monitoring, 16 (5), 549-563, DOI: 10.1002/stc.293 (2009).

     
     

    Nagarajaiah, S., and Basu, B. " Output only Modal Identification and Structural Damage Detection using Time Frequency & Wavelet Techniques," Earthquake Engineering and Engineering Vibration, 8(4), 583-605, DOI: 10.1007/s11803-009-9120-6 (2009).

     
     

    Vemuru, S. M., Wahi, R., Nagarajaiah, S. and Ajayan, P.M. "Strain sensing using a multiwalled carbon nanotube film" Journal of Strain Analysis for Engineering Design, 44( 7), 555-562, DOI: 10.1243/03093247JSA535 (2009).

     
     

    Basu, B. and Nagarajaiah, S. "A wavelet-based time-varying adaptive LQR algorithm for structural control." J. of Engineering Structures, 30 (2008) : 2470-2477.

     
     

    Chen, B. and Nagarajaiah, S. "H_/H_inf structural damage detection filter design using iterative LMI approach." J. of Smart Materials and Structures, 17 (2008)

     
     

    Chen, B. and Nagarajaiah, S. "Structural damage detection using decentralized controller design method." " J. of Smart Structures and Systems, 4 (2008) : 779-794.

     
     

    Koh, B.H., Nagarajaiah, S., and Phan, M.Q. "Direct identification of structural damage through Kronecker product method." Journal of Mechanical Science and Technology, 22 (2008) : 103-112.

     
     

    Nagarajaiah, S., Narasimhan, S. and Johnson, E. "Structural Control Benchmark Problem: Phase II Nonlinear Smart Base Isolated Building subjected to Near Fault Ground Motions." J. of Structural Control and Health Monitoring, 15 (2008) : 653-656.

     
     

    Narasimhan, S. Suresh, S., Nagarajaiah, S. and Sundararajan, N. "On-Line Learning Failure-Tolerant Neural-Aided Controller for Earthquake Excited Structures." Journal of Engineering Mechanics, ASCE, 134 (2008) : 258-268.

     
     

    Narasimhan, S., Nagarajaiah, S. and Johnson, E. "Smart Base Isolated Benchmark Building Part IV: Phase II Sample Controllers for Nonlinear Isolation Systems." J. of Structural Control and Health Monitoring, 15 (2008) : 657-672.

     
     

    Nagarajaiah, S., and Sonmez, E. "Structures of semiactive variable stiffness multiple tuned mass dampers under harmonic forces." Journal of Strucutral Engineering, 133 (1) (2007) : 67-77.

     
     Books
     

    Cimellaro, G. P., Nagarajaiah, S., and Kunnath, S. "Computational Methods in Seismic Protection, Hybrid Testing and Resilience in Earthquake Engineering." Springer Book (2015) : 323.


    http://www.springer.com/us/book/9783319063935
     
     

    Kenneth Loh and Satish Nagarajaiah "Innovative Developments of Advanced Multifunctional Nanocomposites in Civil and Structural Engineering." Elsevier Book (2015) : 404.


    http://store.elsevier.com/Innovative-Developments-of-Advanced-Multifunctional-Nanocomposites-in-Civil-and-Structural-Engineering/isbn-9781782423263/
     
     

    Nagarajaiah, S., and Narasimhan, S. "“Optimal Control of Structures,” Handbook on Optimization of Structural and Mechanical Systems." 

     
     Book chapters
     Handbook on Optimization of Structural and Mechanical Systems
     
     

    Nagarajaiah, S., and Narasimhan, S. "Optimal Control of Structures." Handbook on Optimization of Structural and Mechanical Systems (2007)

     
     Refereed conference papers
     

    Nagarajaiah, S., Yang, Y. "Novel sparse and low-rank methods for monitoring, identification and damage detection of structures." 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure SHMII 2015 (2015)

     
     

    Sun, P., Bachilo, S.M., Weisman, R. B., and Nagarajaiah, S. "Smart Skin: optical strain sensor using single wall carbon nanotubes." Proc. IEEE Conference on Sensors, Smart Structures Technologies (2015)

     
     Conference papers
     

    Attary, N., Symans, M., Nagarajaiah, S., Reinhorn, A., Constantinou, M.C., Taylor, D., Sarilis, A. A., Pasala, D. T. R. “Application of Negative Stiffness Devices for Seismic Protection of Bridge Structures,” Proc. Structures Congress, 2012, Chicago, published CDROM (March 2012).

     
     

    Attary, N., Symans, M., Nagarajaiah, S., Reinhorn, A., Constantinou, M.C., Taylor, D., Sarilis, A. A., Pasala, D. T. R. "Performance Evaluation of a Seismically-Isolated Bridge Structure with Adaptive Passive Negative Stiffness” Proc. 15 World Conference Earthquake Engineering, Lisbon, published CDROM (September 2012).

     
     

    Attary, N., Symans, M., Nagarajaiah, S., Reinhorn, A., Constantinou, M.C., Taylor, D., Sarilis, A. A., Pasala, D. T. R. "Seismically-Isolated Bridge Structure with Adaptive Passive Negative Stiffness” Proc. Quake Summit, NSF CMMI Grantees Conference, 2012, Boston, published CDROM (July 2012).

     
     

    Huang, C., Nagarajaiah, S., “Robotic MFL Sensor and Vibration based Deepwater Riser Monitoring System,” Proceedings Offshore Technology Conference, OTC 23413-PP, Houston, May 2012 

     
     

    Huang, C., Nagarajaiah, S., Varadarajan, N. “Fatigue Estimation in Deepwater Risers based on Wavelets and Second Order Blind Identification” Proceedings of the 31st International Conference on Offshore, Marine and Arctic Engineering OMAE2012, Rio de Janeiro, Brazil, (June 2012). 

     
     

    Nagarajaiah , S., Pasala, D. T. R., Reinhorn, A. M., Constantinou, M. C., Sarlis, A. A. S., Taylor, D. “Adaptive Negative Stiffness: A New Structural Modification Approach for Seismic Protection,”  Keynote Lecture, Proc. International Conference on Advances in Civil Infrastructure Engineering, Changsha, China, published CDROM (September 2012).

     
     

    Nagarajaiah , S., Pasala, D. T. R., Reinhorn, A. M., Constantinou, M. C., Sarlis, A. A. S., Taylor, D. “Adaptive Negative Stiffness: A New Structural Modification Approach for Seismic Protection,”  Keynote Lecture, Proceedings of ANCRiSST, Bangalore, Indian Institute of Science (July 2012).

     
     

    Pasala, D. T. R., Sarlis, A. A. S., Nagarajaiah, S., Reinhorn, A. M., Constantinou, M. C., Taylor, D. “Testing of a New Structural Modification Approach for Seismic Protection using Novel Negative Stiffness Device” Invited Lecture, Proc. Quake Summit, NSF CMMI Grantees Conference, 2012, Boston, published CDROM (July 2012).

     
     

    Pasala, D. T. R., Sarlis, A. A. S., Nagarajaiah, S., Reinhorn, A. M., Constantinou, M. C., Taylor, D. “A New Structural Modification Approach for Seismic Protection using Negative Stiffness Device” Proc. 15 World Conference Earthquake Engineering, Lisbon, published CDROM (September 2012).

     
     

    Pasala, D. T. R., Sarlis, A. A. S., Nagarajaiah, S., Reinhorn, A. M., Constantinou, M. C., Taylor, D. “Negative Stiffness Device for Seismic Response Control of Multistory Buildings” Proc. Structures Congress, 2012, Chicago, published CDROM (March 2012).

     
     

    Reinhorn, A. M., Ray, T., Pasala, D. T. R., Sarlis, A. A., Nagarajaiah, S., Constantinou, M.C., “Control of inelastic structures by weakening and damping,” Plenary Lecture by Prof. Reinhorn, Proc. Structures Congress, 2012, Chicago, published CDROM (March 2012).

     
     

    Yang, Y. and Nagarajaiah, S. “Output-only Modal Identification using Independent Component Analysis based Time-frequency Blind Source Separation,” Proceedings of ANCRiSST, Bangalore, Indian Institute of Science (July 2012).

     
     

    Huang, C., Arrigan, J., Nagarajaiah, S., Basu, B. ""Semi-Active Algorithm for Edgewise Vibration Control in Floating Wind Turbine Blades" Proc. ASCE Earth and Space Conference, CD ROM (2010).." 

     
     

    Nagarajaiah, S., Pasala, D. T. R., and Haung, C. ""Smart TMD: Adaptive Length Pendulum Damper" Proc. 5th World Conference on Structural Control and Monitoring, Tokyo (2010).." 

     
     

    Nagarajaiah, S., Reinhorn, A. M., Constantinou, M. C., Taylor, D., Pasala, D. T. R., Sarlis, A. A. S. ""True Adaptive Negative Stiffness: A new Structural Modification approach for seismic protection" Proc. 5th World Conference on Structural Control and Monitoring, Tokyo (2010).." 

     
     

    Contreras, M., and Nagarajaiah., S. "Fault Tolerant Neural Aided Controller for Multi Degree of Freedom Structures Experiencing Online Sensor Failure." Advances in Science and Technology, 56 (2008) : 247-252.

     
     

    J. Dyck, S. Nagarajaiah, and D. Taylor "Variation of supplemental stiffness and damping using adjustable fluid spring and damper."  (March 4-5, 2008)

     
     

    Nadathur, V. and Nagarajaiah, S. "Nonlinear system identification of offshore floating strutures."  (June 15-20, 2008)

     
     

    Pasala, D.T.R., Nagarajaiah, S., and Grigoriadis, K "Response Control of SAIVS system Using LPV Gain-scheduling Controller."  (March 2008) : 166.

     
     

    Pasala, D.T.R., Nagarajaiah, S., and Grigoriadis, K. "Control of Hysteretic Systems Using LPV Gain Scheduling Controller."  (2008)

     
     

    S. Nagarajaiah1, S. Dyke, J. Lynch, A. Smyth, A. Agrawal, M. Symans, and E. Johnson "Current Directions of Structural Health Monitoring and Control in USA." Advances in Science and Technology, 56 (2008) : 277-286.

     
     

    Z. Li, S. Nagarajaiah, and B. H. Koh "Sensor Failure Detection using Interaction Matrix Formulation."  (2008)

     
     

    Dharap, P., Koh, B.H., and Nagarajaiah, S. "Structural health monitoring using ARMarkov observers." Proc. 2nd International Conf. on Structural Health Monitoring of Intelligent Infrastructure (2005)

     
     

    Dyck, J., Nagarajaiah, S., and Taylor, D. "Variation of supplemental stiffness and damping using adjustable fluid spring and damper." Proc. 8 U.S. National Conf. on Earthquake Eng. (2006)

     
     

    Koh, B.H., Dharap, P., Nagarajaiah, S. and Phan, M. "Real time structural damage detection based on interaction matrix formulations." Proc.4 World Conference on Structural Control (2006)

     
     

    Koh, B.H., Dharap, P., Nagarajaiah, S., and Phan, M.Q., "Real-time Structural Damage Monitoring by Input Error Function." Proc. 5th International Workshop on Structural Health Monitoring (2005)

     
     

    Koh, B.H., Li, Z., Dharap, P., Nagarajaiah, S., and Phan, M.Q. "Actuator Failure Detection through Interaction Matrix Formulation." Proc. McMAT Conf., ASCE/ASME (2005)

     
     

    Li, S., and Nagarajaiah, S. "Structural damage detection using New Physical Parameter Realization Method." Proc.4 World Conf. on Structural Control (2006)

     
     

    Li, Z., Koh, B..H., and Nagarajaiah, S. "Sensor failure detection using indirect approach." Proc.4 World Conference on Structural Control (2006)

     
     

    Li, Z., Koh, B.H., and Nagarajaiah, S. "Sensor failure detection using error function and inverse input-output model." Proc. SPIE International Symposia of Smart Structures & Materials/NDE (2006)

     
     

    Li, Z., and Nagarajaiah, S. "Actuator Failure Detection using direct Method." Proc. Biennial Earth and Space Conference, ASCE Aerospace Division (2006)

     
     

    Nagarajaiah, S., Narasimhan, S., Agrawal, A., and Tan, P. "Semiactive Lyapunov Controller for Phase II Seismic Isolated Highway Bridge Benchmark." Proc.4 World Conf. on Structural Control (2006)

     
     

    Nagarajaiah, S., Narasimhan, S., and Johnson, E. "Phase II: Smart base isolated benchmark building with nonlinear isolation systems." Proc.4 World Conf. on Structural Control (2006)

     
     

    Nagarajaiah, S., Narasimhan,S., and Sahasrabudhe, S. "Performance of Semiactive Lyapunov Controllers in the Seismically Excited Benchmark Highway Bridge." Proc. McMat Conf., ASCE/ASME (2005)

     
     

    Nagarajaiah, S., and Sonmez, E. "Semiactive variable stiffness single/multiple tuned mass dampers." Proc.4 World Conference on Structural Control (2006)

     
     

    Narasimhan, S., and Nagarajaiah, S. "Smart base isolated buildings with variable friction isolation systems." Proc. 4 World Conference on Structural Control (2006)

     
     

    S. Nagarajaiah, P. Dharap, and B.H. Koh "Real time structural damage study using ARMarkov observers." Proc. 15th U.S. National Congress on Theoretical and Applied Mechanics (2006)

     
     

    Z. Li and S. Nagarajaiah "Actuator failure detection using input-output measurements." Proc. 15th U.S. National Congress on Theoretical and Applied Mechanics (2006)

     
     

    Nagarajaiah, S. Yang, J. N., and Spencer B. "Recent advances in Control of Civil Infrastructure in USA."  (2004/September)

     
     

    Nagarajaiah, S. and Mao, Y. "Response of Smart Base Isolated Structures with Independently Variable Stiffness and Variable Damping Systems in Near Fault Earthquakes."  (2004/September)

     
     

    Nagarajaiah, S., Agrawal, A., and Sonmez E. "Response of SDOF systems with Variable Stiffness and Damping Systems to Pulse Type of Excitations."  (2004/October)

     
     Other
     

    Nagarajaiah, S., "Current directions in Structural Control." Proc. Structural Engineering Convention, Indian Institute of Science (2006)

     
    Presentations
     Invited Papers
     

    Nagarajaiah, S., Yang, Y., “Novel sparse and low-rank methods for monitoring, identification and damage detection of structures,” 7th International Conference on Structural Health Monitoring of Intelligent Infrastructure SHMII 2015, Torino - Italy July 1-3, 2015

     
     

    "Carbon nanotube film sensor." Proc. World Forum on Smart Materials and Smart Structures Technology, Chongqing and Nanjing, China. (2007) With Li, S., Dharap, P., Barrera, E.V.

     
     

    "Flexibility based identification using Gauss Newton Method." Proc. SPIE International Symposia of Smart Structures & Materials/NDE, San Diego. (2007) With Chen, B.

     
     

    "Structural damage detection using eigen structure asignment method and LMI technique." Proc. World Forum on Smart Materials and Smart Structures Technology, Chongqing and Nanjing, China. (2007) With Chen, B.

     
     Invited Talks
     

    "Sparse and Low Rank Methods in Structural System Identification, Cambridge University, Dept. of Engineering." (June 25, 2016)

     
     

    "Sparse and Low Rank Methods in Structural System Identification, University of Virginia, Link Laboratory." (November 10, 2016)

     
     

    S. Nagarajaiah, Distinguished Lecture at Georgia Institute of Technology "Adaptive Negative Stiffness System for Seismic Protection," August 24, 2015.

     
     

    Sun, P., Bachilo, S.M., Weisman, R. B., and Nagarajaiah, S. “Smart Skin: optical strain sensor using single wall carbon nanotubes,” Proc. IEEE Conference on Sensors, Smart Structures Technologies, University of Trento, July 9-11 (2015).

     
     

    S. Nagarajaiah, Invited Talk at Carnegie Mellon University, "Sparse and Low Rank Methods for Structural Monitoring, Identification and Damage Detection," November 8, 2015.

     
     

    S. Nagarajaiah, Invited Talk at University of Pittsburg, "Sparse and Low Rank Methods for Structural Monitoring, Identification and Damage Detection" November 6, 2015.

     
     

    Output only Modal Identification: New Blind Source Separation and Sparse Techniques

     
     

    Adaptive Negative Stiffness System 

     
     

    "Inivted Seminar at National Multidiscpilinary Center for Earthquake Engineering, EERI, State University of New York at Buffalo, CEE." (October 10, 2012)

     
     

    "Invited Seminar at Dalian Insitute of Technology, China." (December 13, 2012)

     
     

    "Invited Seminar at Hong Kong Polytechnic University, China." (Sept 13, 2012 )

     
     

    "Invited Seminar at Hunan University, China." (Sept 15, 2012 )

     
     

    "Invited Seminar at Stanford University." (November 7, 2012)

     
     

    "Invited Seminar at University at Buffalo, Mechanical Engineering." (October 11, 2012)

     
     

    "Invited Seminar at University of Californai at Berkeley." (November 5, 2012)

     
     

    "Invited Seminar at Harbin Institute of Technology, China." (December 10, 2012)

     
     

    "Invited Seminar, Univ. of Waterloo, Canada." (Nov 23, 2011 )

     
     

    "Invited Seminar, University of Illinois, Urbana Champaign." (April 22, 2013)

     
     

    " Invited Seminar, Tongji University, Shanghai, China ." (July 03, 2011 )

     
     

    "ASCE Houston Chapter."

     
     

    "Scientia Institute (BP Horizon Failure) Rice University."

     
     

    "University of Tokyo."

     
     

    "Invited Lecture." University of Michigan, (Nov 9, 2008)

     
     

    "Invited Talk." University of Thessali, (Oct 28, 2008)

     
     

    "Mechanical Engineering." University of Thessali, (Oct 28, 2008)

     
     

    "Current directions in Structural Control and Monitoring." Structural Control Workship., 157, Japan Society for the Promotion of Science. (November 15, 2005)

     
     

    "Real-time Structural Damage, Sensor and Actuator Fault Detection using Interaction Matrix Formulation." Vanderbilt University, Nashville, TN. (March 14, 2005)

     
     

    "Recent Advances in Control of Civil Infrastructures in USA." US-Korea Workshop on Smart Structures, Seoul, Korea. (2004)

     
     

    "Semiactive structural control of variable frequency systems." Semiactive structural control of variable frequency systems, California Institute of Technology. (September 24, 2004)

     
     

    "Smart Structures based on Variable Stiffness and Damping Systems." University of Colorado, Boulder, CO. (April 1, 2005)

     
     

    "Smart structures based on SAIVS and STMD systems." Korean Advanced Institute of Tech., Daejeon Korea. (August 31, 2004)

     
     

    "Variable Structure Systems." Univ. of Houston, Houston, TX. (April 1, 2004)

     
     

    "Future Directions on Structural Control." 3rd World Conf. on Struct. Control Kobori Panel, Como, Italy. (04/05/2002)

     
     

    Invited Plenary Speaker.  "Recent Advances in Control of Civil Infrastructures in USA." US-Korea Workshop on Smart Structures, Seoul, Korea. (2004)

     
     

    "Semiactive structural control of variable frequency systems." California Institute of Technology Applied Mechanics Division, Pasadena, CA. (09/24/2004)

     
     

    "Smart Tuned Mass Dampers." Univ. of Houston, Mechanical Engineering, Houston, TX. (03/29/2002)

     
     

    "Smart Variable Stiffness Tuned Mass Damper Control using EMD/HT." Indian Inst. of Science, Civil Engineering, (06/25/2003)

     
     

    "Smart Variable Stiffness and Damping Systems for Structural Control." Rice University, Mechanical Engineering and Materials Science, Houston, TX. (10/18/2002)

     
     

    "Smart structures based on SAIVS and STMD systems." Korean Advanced Institute of Tech., Civil Eng., Daejeon, Korea. (08/31/2004)

     
     

    "Variable Structure Systems." University of Houston, Mechanical Engineering, Houston, TX. (04/01/2004)

     
     Keynote Speaker
     

    "Sparse and Low Rank Methods in Structural System Identification, ACEM16, Structures 16, International Conference, Jeju, Korea." (August 29, 2016)

     
     

    “Output-only Modal Identification and Damage Detection via Blind Source Separation, Time-Frequency Techniques and Sparse Component Analysis” Invited Keynote Speaker 10th International Conference on Damage Assessment of Structures (DAMAS 2013). 

     
     

    "Keynote Speaker, 7th International Conference on Smart Structures and Systems ANCRiSST 2012 (Indian Institute of Science, Bangalore)." (July 28, 2012 )

     
     

    Keynote Speaker, International Conf. on Advances in Civil Infrastructure Eng. (Changsha, China)

     
     

    "Keynote Speaker: Nagarajaiah, S. "Adaptive Stiffness Systems: Time-Frequency Methods for Identification and Control" Proc. 5th World Conference on Structural Control and Monitoring, Tokyo.."

     
     

    "Current directions in Structural Control." Structural Engineering Convention, Indian Institute of Science, India. (December 16, 2005)

     
     

    "Recent Advances in Structural Control." Structural Engineering Convention, Indian Institute of Science. (December 16, 2005)

     
     Lectures
     

    "Adaptive Negative Stiffness Structural Systems, Cambridge University, Dept. of Engineering." (June 26, 2016)

     
     

    "Invited Seminar at University of California at Davis." (November 6, 2012)

     
     

    "Invited Lecture." Indian Inst. of Tech,, Bombay. (August 4, 2008)

     
     

    "Invited Lecture." Northeastern University, (October 2, 2008)

     
     

    "Invited Lecture." University of Houston, (April 23, 2008)

     
     

    "Struc. Eng. World Congress." Bangalore. (Nov. 4, 2007)

     
     

    "World Forum on Smart Materials and Structures." Chongqing. (May 22-23, 2007)

     
     

    "World Forum on Smart Materials and Strucutres." Nanjing. (May 24-27, 2007)

     
     

    "Smart structural dynamic systems: Sensor, Monitoring, Identification and Adaptive Control." Dean's Lecture, Rice University. (November 15, 2006)

     
     

    "Smart structures based on variable stiffness and damping systems." SUNY, Buffalo. (April 28, 2006)

     
     Other
     

    "US Delegate at the US-India Workshop on NEES and earthquake eng.." Bombay, India. (2005)

     
     

    "US Delegate at the US-Taiwan workshop on Smart Structures and Sensors." Taipei, Taiwan. (2006)

     
     

    "NSF: US Delegate." US-China workshop on structural heal monitoring, Nanjing, China. (2004)

     
     

    "NSF: US Delegate." India workshop on NEES and earthquake engineering, Bombay, India. (2005)

     
     

    "NSF: US Delegate." US-Korea workshop on smart structures, Seoul, Korea. (2004)

     
     Panelist
     

    "Future Directions of Structural Control." Professor Takuji Kobori, Kajima, Japan. (November 14,2005)

     
     

    "Future Directions of Structural Control." Professor Takuji Kobori, Kajima Research Institute, Japan. (November 14, 2005)

     
     Seminar Speaker
     

    "Seminar." Trinity College, Dublin. (Sept. 15, 2007)

     
     

    "Seminar -." Trinity College, Dublin. (July 26, 2007)

     
     

    "Seminar -." Trinity College, Dublin. (Sept 14, 2007)

     
     

    "Current directions in Structural Control in USA." Society for the Promotion of Science, Japan. (November 15, 2005)

     
    Editorial Positions
     Editor, International Journal of Structural Control and Health Monitoring, Wiley International. Wiley International;. (2009 - 2016)

     Member of the Editorial Board, International Journal of Engineering Structures,. Elsevier. (2004 - 2012)

     Editor in Chief, Structural Monitoring and Maintenance. Techno-Press. (2014 - 2016)

     Editor, Journal of Structural Engineering ASCE. ASCE. (2011 - 2016)

     Member of the Editorial Board, International Journal of Engineering Structures. Elsevier. (2004 - 2004)

     Editor for Special Issue, Special issue on Benchmark Problem, Journal of Structural Control and Health Monitoring. Wiley, International Association of Structural Control. (2005 - 2005)

     Member of the Editorial Board, International Journal of Structural Conrol and Health Monitoring. (2006 - 2006)

     Other, International Journal of Structural Control and Health Monitoring. (2008 - 2008)

     Associate Editor, Journal of Structural Engineering. ASCE. (2004 - 2004)

     Associate Editor, Journal of Structural Engineering. American Society of Civil Engineering. (2006 - 2006)

     Member of the Editorial Board, International Journal of Engineering Structures. Elsevier. (2005 - 2005)

     Member of the Editorial Board, International Journal of Engineering Structures, Elsevier. (2008 - 2008)

     Member of the Editorial Board, Journal of Structural Control and Health Monitoring, Wiley. (2008 - 2008)

     Member of the Editorial Board, Journal of the Indian Academy of Sciences. (2007 - 2007)

     Editor for Special Issue, Special issue on Structural Control, Journal of Structural Engineering. ASCE. (2006 - 2006)

     Associate Editor, Journal of Structural Engineering. American Society of Civil Engineering. (2005 - 2005)

     Other, Special Issue on Benchmark Problem, J. Structural Control and Structural Health Monitoring. Wiley, IASC. (2004 - 2004)

     Member of the Editorial Board, International journal of Structural Control and Health Monitoring, Wiley. (2007 - 2007)

     Other, J. Structural Control and Structural Health Monitoring. (2006 - 2006)

     Other, Special issue on Structural Control. Journal of Structural Engineering. ASCE. (2004 - 2004)

     Editor for Special Issue, Special issue on Structural Control, Journal of Structural Engineering. ASCE. (2005 - 2005)

     Member of the Editorial Board, Sadhana - Academy Proceedings in Engineering Sciences: Journal of the Indian Academy of Sciences, Springer. (2008 - 2008)

     Member of the Editorial Board, International Journal of Engineering Structures. (2006 - 2006)

     Member of the Editorial Board, International Journal of Engineering Structures, Elsevier. (2007 - 2007)

    Supervised Theses & Dissertations
     Erin Criste, M.S. Testing and Analysis of a Prototype Fluid Damper. (2002) (Thesis Director)

     Sanjay Sahasrabudhe, Ph.D. Semiactive Control of Sliding Isolated Buildings and Bridges with Independently Variable Stiffness and Damping Systems. (2002) (Thesis Director)

     Sriram Narasimhan, M.S. Analytical Study of Base Isolated Buildings with Smart Devices. (2002) (Thesis Director)

     Yuqing Mao, M.S. Sliding Mode Control of Smart Base Isolated Structures. (2002) (Thesis Director)

     Ashutosh Agarawal, M.S. Response of Semiactive Variable Stiffness and Damping Systems to Pulse Type Excitations: Analytical and Experimental Study. (2003) (Thesis Director)

     Sriram Narasimhan, PhD Control of smart base isolated buildings with new semiactive devices and novel H2/LQG, H(infinity), and time frequency coontrollers. (2004) (Thesis Director)

     Jeffery Dyck, M.S. Experimental and analytical study of variable fluid damper and stiffness device. (2004) (Thesis Director)

     Sriram Narasimhan, Ph.D. Robust control of smart base isolated buildings: LQG, H2 and H-inf based semiactive control of variable stiffness, variable damping and variable friction systems. (2004) (Thesis Director)

     Varadarajan Nadathur, Ph.D. Novel Time-frequency Controllers for Real Time Tuning of Smart Tuned Mass Dampers. (2004) (Thesis Director)

     Michael Sullivan, M.S. State Estimation of International Space Station Centrifuge Motor with Incomplete Knowledge of Disturbance Inputs. (2005) (Thesis Director)

     Varadarajan Nadathur, PhD Methods for Real time Actuator-sensor failure and structural damage detection. (2005) (Thesis Director)

     Steve Wilkerson, PhD An optimization algorithm for minimum weight design of steel structures with non-smooth stress constraints. (2005) (Thesis Director)

     Zhiling Li, PhD Novel structural health monitoring, sensor, and actuator fault detection. (2005) (Thesis Director)

     Prasad Dharap, PhD Real-time structural damage monitoring through modified interaction matrix formulation. (2005) (Thesis Director)

     Wilkerson, Steve, Ph.D. An optimization algorithm for minimum weight design of steel structures with nonsmooth stress constraints. (2005) (Thesis Director)

     Sullivan, Michael, M.S. Mech. Eng. State estimation of international space station centrifuge motor with nonsmooth stress constraints. (2005) (Thesis Director)

     Nadathur, Varadarajan, Ph.D. Novel smart variable stiffness tuned mass damper and its real time identification and control using time frequency techniques. (2005) (Thesis Director)

     Ertan Sonmez, PhD Semiactive Response Control using Smart Variable Stiffness Multiple Tuned Mass Dampers and Wavelet and Time-frequency Techniques. (2006) (Thesis Director)

     Li Zhiling, Ph.D. Methods for real time actuator sensor failure and structural damage detection. (2006) (Thesis Director)

     Dharap, Prasad, Ph.D. Real time structural damage monitoring using interaction matrix formulation and observers. (2006) (Thesis Director)

     Ertan Sonmez, Ph.D. Deterministic and Stochastic Responses of Smart Variable Stiffness and Damping Systems and Smart Tuned Mass Dampers. (2011) (Thesis Director)

     Michael Contreras, Ph.D. Neural Network based real time structural damage monitoring and fault detection and control. (2012) (Thesis Director)

     Chaojun Huang, Ph.D. Structural Health Monitoring System for Deepwater Risers with Vortex-induced Vibration: Nonlinear Modeling, Blind Identification, Fatigue/Damage Estimation and Vibration Control. (2013) (Thesis Director)

     Dharma Theja Reddy Pasala, Ph.D. Seismic response control of structures using novel adaptive passive and semi-active variable stiffness and negative stiffness devices. (2013) (Thesis Director)

     Keguan Zou, Ph.D. Negative Stiffness Systems for Vibration Monitoring and Isolation. (2014) (Thesis Director)

     Chao Sun, Ph.D. Smart Tuned Mass Dampers. (2014) (Thesis Director)

     Venkata Srivishnu Mohan Vemuru, Ph.D. Seismic Protection of Base Isolated structures with uplift using Adaptive Passive and Semi Active Negative Stiffness Device. (2014) (Thesis Director)

     Keguan Zou, Ph.D. Universal negative stiffness system: Nonlinear Dynamics - theoretical and experimental study. (2014) (Thesis Director)

     Yongchao Yang, Ph.D. System Identification using Independent Component Analysis. (2014) (Thesis Director)

     Lin Chen, Ph.D. Model Identification/Structural Health Monitoring. (2015) (Thesis Director)

     Peng Sun, Ph.D. Smart Skin for Structural Health Monitoring. (2016) (Thesis Director)

     Sam Wang, M.S. Smart Skin for Mapping Fracture. (2016) (Thesis Director)

     Peng Sun, Ph.D. Smart Paint based strain sensing. (2016) (Thesis Director)

     Zhilu Lia, Ph.D. Negative stiffness systems: Integrated vibration monitoring and control. (2017) (Thesis Director)

     Debarshi Sen, Ph.D. Wave Propagation based SHM. (2017) (Thesis Director)

     Zhilu Lai, Ph.D. Blind Source Separation and System Identification. (2017) (Thesis Director)

     Wei Ming, M.S. RISER DYNAMICS. (2018) (Thesis Director)

     Srivishnu Mohan Venkata Vemuru, POST-DOC Intelligent Pulmonary Artery Band for Patients with Congenital Heart Disease. (Thesis Co-Director)

     Huang Dayong, PhD Inelastic modeling of reinforced concrete flat slab structures. (Thesis Director)

     Sutanu Bhowmick, PhD Nonlinear Vibration Control, Sensing and Structural Identification. (Thesis Director)

     Beili Chen, PhD Adaptive detection and control of large flexible structures. (Thesis Director)

     Michael Contreras, PhD TBD. (Thesis Director)

    Awards, Prizes, & Fellowships
     Leon S. Moisseiff Award, American Society of Civil Engineers (ASCE)

     Contact based distributed strain sensing using SWCNT nano-films, which was highlighted as one of the most cited papers in Nanotechnology journal in the 25th anniversary issue and web page of the Nanotechnology Journal, Nanotechnology Journal: http://iopscience.iop.org/0957-4484/page/25th-volume (2014)

     Fellow of Structural Engineering Institute, American Society of Civil Engineers, Structural Engineering Institute (March 2012)

     National Academies Indo US Symposium on Frontiers of Engineering, (2008)

     US Delegate at the US-Japan workshop on Advanced Sensors, (2007)

     National Academics Indo US Symposia on Frontiers of Engineering, (2008)

     US Delegate at the US-China World Conf. on Smart Strucutres Conf, (2007)

     National Academies Annual Symposium on Frontiers of Engineering, NAE (2007)

     Recent Developments in Supplemental Damping, Base Isolation and Tuned Mass Dampers, Strucutral World Congress (Nov. 2-7, 2007)

     Journal of Applied Physics, 97(7), 074303-1 to 8, (2005): Selected as one of the best papers Amongst all applied physics papers for publication in Virtual Journal of Nanoscale Science & Technology, Vol. 11, Issue 13, April 4, 2005 , JAP (2005)

     Top 100 most highly downloaded articles in 2006 Int. Journal of Solids and Structures, 41, 6925-6936 (2004), IJSS (2006)

     Top 100 most highly downloaded articles in 2004 Nanotechnology Journal 15(3), 379 - 382 (2004) , NJ (2005)

     One of the best papers amongs all applied physics papers for publication, Virtual Journal of Nanoscale Science & Technology (2005)

     Nomination: ASCE State of the Art Award, ASCE (2004-2005)

     Professor of the Year, Department of Civil and Environmental Engineering (2004 - 2005)

     Top 100 most highly downloaded articles in 2004, Nanotechnology Journal (2005)

     US Delegate at the US-Korea workshop on smart structures, NSF (2004)

     US Delegate at the US-India workshop on earthquake engineering, NSF (2004)

     US Delegate at the US-China workshop on strutural health monitoring, NSF (2004)

     NSF CAREER Award 1999-2005, National Science Foudation (2004)

    Positions Held
     Member, Board of Governors, American Society of Civil Engineers, Structural Engineering Institute. (2015 - 2019)

     Chairman of Awards Committee, Structural Engineering Institute - ASCE . (2013 - 2013)

     Chairman, New Technical Committee on Structural Health Monitoring and Control, Engineering Mechanics Division, ASCE. (2004 - 2004)

     Past Chair, Technical Administrative Committee, Structural Engineering Institute, American Society of Civil Engineers. (2012 - 2012)

     Founding Chairman, New Technical Committee on Structural Health Monitoring and Control, Eng. Mechanics Division, ASCE. (2006 - 2006)

     Founding Chairman, New Technical Committee on Structural Health Monitoring and Control, Eng. Mechanics Division, ASCE. (2005 - 2005)

     Chairman, Task Group Benchmark Problems, ASCE, Int. Assc. St. Cntl & Monitoring. (2004 - 2004)

     Awards Committee, Structural Engineering Institute, American Society of Civil Engineers. (2012 - 2012)

     Member, Publications Administrative Committee of ASCE Jouirnal of Structural Engineering. (2006 - 2006)

     Member, Publications Administrative Committee of ASCE Jouirnal of Structural Engineering. (2005 - 2005)

     Board Member, International Association of Structural Control and Monitoring. (2012 - 2012)

     Chairman, Task Group Benchmark Problems, ASCE, Int. Assc. St. Cntl. & Monitoring. (2005 - 2005)

     Chairman, Seismic Analysis of Bridges Session, 3rd International Conference on Earthquake Engineering, Nanjing, China. (2004 - 2004)

     Chairman, Task Group Benchmark Problems, ASCE, Int. Assc. St. Cntl. & Monitoring. (2006 - 2006)

     Member, Technical Committee on Dynamics, Engineering Mechanics Division, ASCE. (2006 - 2006)

     Chairman, Structural Health Monitoring Session, US-Korea Smart Structures Workshop, Seoul Korea. (2004 - 2004)

     Member, Technical Committee on Dynamics, Engineering Mechanics Division, ASCE. (2005 - 2005)

     Member, Scientific Committee, Fourth World Conf. on Structural Control, UCSD, International Assoc. of Structural Control and Health Monitoring. (2005 - 2005)

     Member, Scientific Committee, Fourth World Conf. on Structural Control, UCSD, International Assoc. of Structural Control and Health Monitoring. (2006 - 2006)

     Chairman, Smart Base Isolated Benchmark Problem Session, ASCE Engineering Mechanics Conference, U Delaware, Newark. (2004 - 2004)

     Member, Scientific Committee, Structural Engineering Convention, Indian Institute of Science, India. (2006 - 2006)

     Member, Scientific Committee, Structural Engineering Convention, Indian Institute of Science, India. (2005 - 2005)

     Chairman, Structural Health Monitoring I Session, ASCE, 17th Eng. Mech. Conf. (With Prof. Johnson, USC), U Delaware, Newark. (2004 - 2004)

     Co-chairman, Structural Health Monitoring III Session, ASCE, 17th Eng. Mech. Conf. , Eng. Mechanics Conf.. U Delaware, Newark. (2004 - 2004)

     Chairman, Structural Control WG, Fourth International Workshop Structural Control, International Assoc. of Structural Control & Health Monitoring. (2005 - 2005)

     Chairman, Structural Control WG, Fourth International Workshop Structural Control, International Assoc. of Structural Control & Health Monitoring. (2006 - 2006)

     Chairman, U.S. Panel: International Association of Structural Control and Monitoring. (2006 - 2006)

     Chairman, Smart Base Isolated Benchmark Problem Session, ASCE, 16th Eng. Mech. Conf., UW, Seattle. (2004 - 2004)

     Co-chairman, Control I Session, Int. Conf. of Asia Pacific Centers of Earthquake Eng. (With Prof. Masri, University of Southern California), ICANCEER, Hong Kong. (2004 - 2004)

     Member, Executive Committee, Technical Activities Division, SEI, ASCE. (2006 - 2006)

     Co-chairman, Smart Materials and Structures Session, 7 US National Conf. on Earthquake Eng. (With Prof. Gavin, Duke University). (2004 - 2004)

     Co-chairman, Semiactive Seismic Isolation Session, 3rd World Conf. on Structural Control (With Prof. Gavin, Duke University), Como, Italy. (2004 - 2004)

     Member, CMS Panel Review, National Science Foundation, Panel I. (2004 - 2004)

     Member, CMS Panel Review, National Science Foundation, Panel II. (2004 - 2004)

     Member, CMS Panel Review, National Science Foundation. (2004 - 2004)

     Member, CMS Panel Review, National Science Foundation. (2004 - 2004)

     Member, CMS Panel Review, National Science Foundation. (2004 - 2004)