Citation Google Scholar

Researchgate 

Peer-Reviewed Books/Chapters/Encyclopedia

2. Anil K. Agrawal, Young-Jin Cha, Zhou Xu, (2014),SEMI-ACTIVE CONTROL OF STRUCTURAL SYSTEMS in Structural Engineering and Geomechanics, 8 entries, [Ed.Sashi K. Kunnath], in Encyclopedia of Life Support Systems(EOLSS), Developed under the Auspices of the UNESCO, Eolss Publishers, Paris, France, [http://www.eolss.net] [Retrieved July 22, 2015]

 

1. Cha Y.J. and Kim, Y., (2011). “Comparative study on multi-objective genetic algorithms for seismic response controls of structures,” Design Optimization of Active and Passive Structural Control Systems, IGI Global, http://www.igi-global.com/book/design-optimization-active-passive-structural/64896.

 

Peer-Reviewed Journal Articles  (  *: Graduate student                †: Corresponding author )

 

26. Cha Y.J.†, Choi W.*, Suh G.*,  and Mahmoudkhani S.* and Buyukozturk O.* (2018) “Autonomous structural visual inspection using region-based deep learning for detecting multiple damage types,” Computer-Aided Civil and Infrastructure Engineering (IF: 5.786), DOI: 10.1111/mice.12334.  Top journal within Civil Engineering discipline.

 

25. Cha Y.J.†, and Wang Z.* (2017) “Unsupervised novelty detection based structural damage localization using density peaks-based fast clustering algorithm,” Structural Health Monitoring (IF: 3.193), DOI: 10.1177/1475921717691260.  Top journal within a SHM discipline.

 

24. Cha Y.J.†, Choi W.*, and Buyukozturk, O. (2017) “Deep learning-based crack damage detection using convolutional neural networks,” Computer-Aided Civil and Infrastructure Engineering; 32(5) 361-378 (IF:5.786). Top journal within a Civil Engineering discipline (US Patent was filed).

 

23. Cha Y.J.†, Chen G.J.*, and Buyukozturk, O. (2017) “Output-only computer vision based damage detection using phase-based optical flow and unscented Kalman filters,” Engineering Structures, 132, 300–313 (IF:1.893).

 

22. Epp T.*, and Cha Y.J.†, (2017) “Air-coupled microphone based concrete structure damage detection using wavelet transforms,” Smart Materials and Structures 26(2) 025018(IF: 2.769) .

 

21. Cha Y.J.†, You K.S.*, and Choi, W.* (2016), “Vision-based detection of loosened bolts using the Hough transform and support vector machines,” Automation in Construction, 71(2): 181-188 (IF:2.442).

 

20. Cha Y.J.†, Trocha P.*, and Buyukozturk, O. (2016), “Field measurement based system identification and dynamic response prediction of a unique MIT building,” Sensors MDPI, 16(7), 1016 (IF:2.033)

 

19. Cha Y.J.† and Agrawal A.K. (2016), “Seismic retrofit of MRF buildings using decentralized semi-active control for multi-target performances,” Earthquake Engineering & Structural Dynamics, (IF: 2.127), DOI: 10.1002/eqe.2796.

 

18. Cha Y.J.† and Bai J.-W. (2016), “Seismic fragility estimates of high-rise buildings controlled by MR dampers using performance-based design,” Engineering Structures, 116: 192–202 (IF:1.84).

 

17. Cha Y.J.† and Agrawal A.K. (2016), “Robustness studies of sensor faults and noises for semi-active control strategies using large-scale MR dampers,Journal of Vibration and Control, 22, 5: 1228-1243 (IF: 4.355).

 

16. Chen J.,* Wadhwa N.*, Cha Y.J., Durand F., Freeman F., and Buyukozturk O†. (2015), “Modal identification of simple structures with high-speed video using motion magnification,” Journal of Sound and Vibration, 345: 58-71 (IF: 1.857).

 

15. Cha Y.J. and Buyukozturk O.† (2015), “Structural damage detection using modal strain energy and hybrid multi-objective optimization,” Computer-Aided Civil and Infrastructure Engineering, 30:347-358 (IF: 5.786). Top journal within a Civil Engineering discipline.

 

14. Temimi H., Ben-Romdhane M., El-Borgi S.†, Cha Y.J. (2015), “Time-Delay Effects on Controlled Seismically Excited Linear and Nonlinear Structures,” International Journal of Structural Stability and Dynamics, 1550031 (IF:1.059).

 

13. Mitchell R.*, Cha Y.J., and Kim Y.†, Mahajan A.A.* (2015), “Active control of highway bridges subject to a variety of earthquake loads,” Earthquake Engineering and Engineering Vibration, Springer, 14(2): 253-263 (IF:0.814).

 

12. Kim Y.J.†, Wakeel S.A.*, Gaddafi A.* and Cha Y.J. (2015), “In-situ performance of severely deteriorated pervious concrete: A Case Study,” ACI Materials Journal, 112(2):295-304 (IF: 1.123).

 

11. Friedman A., Dyke S.J.†, Phillips B., Ahn R., Dong B., Chae Y., Castaneda N., Jiang Z., Zhang J., Cha Y.J., Ozdagli A.I., Spencer B.F., Ricles J., Christenson R., Agrawal A., and Sause R. (2015), “Large-scale real-time hybrid simulation for evaluation of advanced damping system performance,” Journal of Structural Engineering (ASCE), 141(6), 04014150. (IF: 1.994)

 

10. Cha Y.J.†, Agrawal A.K., Friedman A., Phillips B., Ahn R., Dong B., Dyke S.J., Spencer B.F. Jr., Ricles J., and Christenson R. (2014),  “Performance validations of semi-active controllers on a large-scale moment resisting frame equipped with a 200 kN MR damper using real- time hybrid simulations,” Journal of Structural Engineering (ASCE), 140(10), 04014066. (IF: 1.994)

 

9. Cha Y.J.†, Agrawal A.K., Phillips B., and Spencer B.F. Jr. (2014), “Direct performance-based design with 200 kN MR dampers using multi objective cost effective optimization for Steel MRFs,” Engineering Structures, 71: 60-72. (IF: 2.295)

 

8. Cha Y.J.†, Zhang J., Agrawal A., Dong B., Friedman A., Dyke S., and Ricles J. (2013), “Comparative Studies of Semiactive Control Strategies for MR Dampers: Pure Simulation and Real-Time Hybrid Tests.Journal of Structural Engineering (ASCE), 139, SPECIAL ISSUE: NEES 1: Advances in Earthquake Engineering, 1237–1248. (IF: 1.994)

 

7. Cha Y.J.†, Agrawal A.K., and Dyke S.J. (2013), “Time delay effects on large-scale MR damper based semi-active control strategies,” Smart Materials and Structures, 22(1): 015011.  (IF: 2.449)

 

6. Cha Y.J.† and Agrawal A.K., (2013), “Decentralized output feedback polynomial control of seismically excited structures using genetic  algorithms,” Structural Control & Health Monitoring 20(3): 241-258. (IF: 1.726)

 

5. Cha Y.J.† and Agrawal, A.K. (2013), “Velocity-based semi-active turbo-Lyapunov control algorithm for seismically excited nonlinear smart structures,” Structural Control & Health Monitoring, 20(6): 1043-1056.(IF: 1.726)

 

4. Cha Y.J., Raich A.M.†, Barroso L.R., and Agrawal A.K., (2013), “Optimal placements of active control devices and sensors in frame structures using multi-objective genetic algorithms,” Structural Control & Health Monitoring 20(1): 16-44. (IF: 1.726)

 

3. Cha Y.J., Kim Y.†, Raich A.M., and Agrawal A.K., (2013), “Multi-objective formulation for actuator and sensor layouts of actively controlled 3-D buildings,” Journal of Vibration and Control, 19(6): 942-960. (IF: 4.355)

 

2. Mitchell R., Kim Y.†, El-Korchi T., and Cha Y.J. (2013), “Wavelet-neuro-fuzzy control of hybrid building-active tuned mass damper system under seismic excitation,” Journal of Vibration and Control, 19(12): 1881-1894. (IF: 4.355)

 

1. Cha Y.J., Agrawal A.K., Kim, Y.†, and Raich A.M., (2012), “Multi-objective genetic algorithms for cost-effective distributions of actuators and sensors in large structures,” Expert Systems with Applications, 39(9): 7822-7833. (IF: 2.254)

 

Published Experimental Data Sets


6. Cha Y.J., Zhang J., Agrawal A., Friedman A., Dyke S.(2013). “Hybrid Test – 3DOFs Linear Prototype Model – Lehigh MR Damper 2“, Network for Earthquake Engineering Simulation (distributor), Dataset, DOI:10.4231/D3C24QM8C.

5. Friedman A., Phillips B, Ahn R, Chae Y.B., Zhang J.,  Cha Y.J., Dyke S., Ricles J, Spencer B, Christenson R, Sause R.(2013). “RTHS (Damper) – 3StoryPS – Single MR Damper (Floor 1)”, Network for Earthquake Engineering Simulation (distributor), Dataset, DOI:10.4231/D3QJ77Z3Q.

4. Friedman A., Phillips B., Ahn R., Chae Y.B., Zhang J.,  Cha Y.J., Dyke S., Ricles J., Spencer B., Christenson R., Sause R.(2013). “RTHS (Damper) – 3StoryPS – Single MR Damper (Floor 1)“, Network for Earthquake Engineering Simulation (distributor), Dataset, DOI:10.4231/D3KS6J48W.

3. Friedman A., Phillips B., Ahn R., Chae Y.B., Zhang J.,  Cha Y.J., Dyke S., Ricles J., Spencer B., Christenson R., Sause R.(2013). “RTHS (Frame + Damper) – 3StoryPS – Single MR Damper (Floor 1)“, Network for Earthquake Engineering Simulation (distributor), Dataset, DOI:10.4231/D3G15TB42.

2. Friedman A., Phillips B., Ahn R., Chae Y.B., Zhang J.,  Cha Y.J., Dyke S., Ricles J., Spencer B., Christenson R., Sause R.(2013). “RTHS (Frame + Damper) – 9StoryBM – Single MR Damper (Floor 1)“, Network for Earthquake Engineering Simulation (distributor), Dataset, DOI:10.4231/D3B853J09.

1. Friedman A., Phillips B., Ahn R., Chae Y.B., Zhang J.,  Cha Y.J., Dyke S., Ricles J., Spencer B., Christenson R., Sause R.(2013). “RTHS (Frame + Damper) – 9StoryBM – Two MR Dampers (Floor 1 + 2)“, Network for Earthquake Engineering Simulation (distributor), Dataset, DOI:10.4231/D36H4CQ6J.

 

Peer-Reviewed Proceedings & Conferences


26. Wang Z.*, and Cha Y.J. (2017), “Unsupervised novelty detection techniques for structural damage detection: A comparative study,” In IMAC-XXXV Jan. 30–Feb. 2, 2017 Garden Grove, CA. A Conference and Exposition on Structural Dynamics.

 

25. Ramana L.*, and Choi W.*, and Cha Y.J. (2017), Automated vision-based loosened bolt detection using the Viola-Jones algorithm,” In IMAC-XXXV Jan. 30–Feb. 2, 2017 Garden Grove, CA. A Conference and Exposition on Structural Dynamics.

 

24. Cha Y.J., and Choi W.* (2017), “Vision-based concrete crack detection using a convolutional neural network,” In IMAC-XXXV Jan. 30–Feb. 2, 2017 Garden Grove, CA. A Conference and Exposition on Structural Dynamics.

 

23. Epp T. *, and Cha Y.J. (2017), “Wavelet transform-based damage detection in reinforced concrete using an air-coupled impact-echo method,” In IMAC-XXXV Jan. 30–Feb. 2, 2017 Garden Grove, CA. A Conference and Exposition on Structural Dynamics.

 

22. Cha Y.J., and Wang Z.*, “Unsupervised Novelty Detection Based Structural Damage Detection Method” 5th International Structural Specialty Conference CSCE. London, ON, June 1-4 2016.

 

21. Cha Y.J., “Decentralized Semi-Active Control For Multi-Performance-Based Design”, 5th International Natural Disaster Mitigation Specialty Conference CSCE. London, ON, June 1-4 2016.

 

20. Cha Y.J., You K.*, and Choi W.*, Computer-Image-Based Loosened Bolt Detection Using Support Vector Machines, 5th International Structural Specialty Conference CSCE. London, ON, June 1-4 2016.

 

19. Bai J.W and Cha Y.J., “Seismic Fragility Analysis Semi-Actively Controlled Structure Using MR Dampers” Geotechnical and Structural Engineering Congress, Phoenix, Arizona, USA, February 14-17, 2016.

 

18. Cha Y.J., Chen J., and Buyukozturk O., “Motion Magnification Based Damage Detection Using High Speed Video10th International Workshop On Structural Health Monitoring (IWSHM), Stanford, USA, September 1-3, 2015.

 

17. Buyukozturk O., Long J., Mohammadi R., Cha Y.J., and Chen J., “Structural health monitoring: A quest towards the use of combined approaches,” 7th European Workshop On Structural Health Monitoring, Nantes, France, July 8-11, 2014.

 

16. Cha Y.J., & Buyukozturk, O. (2014)., “Modal strain energy based damage detection using multi-objective optimization,” In Structural Health Monitoring, Volume 5 (pp. 125-133). Springer International Publishing.

 

15. Chen J, Wadhwa N., Cha Y.J., Freeman W., and Buyukozturk O. (2014), “Structural modal identification through high speed camera video: motion magnification,” In Topics in Modal Analysis I, Volume 7(pp. 191-197). Springer International Publishing.

 

14. Cha Y.J. and Bai J.-W., “Seismic fragility estimates of controlled high-rise building using with magnetorheological dampers,” 10th US National Conference on Earthquake Engineering, Anchorage Alaska, July 21-25 2014.

 

13. Cha Y.J., Agrawal A.K., and Dyke S.J., “Robustness studies of sensor fault and noise effects on advanced semi-active control strategies for use with MR dampers,” Engineering Mechanics Institute 2012 conference, University of Notre Dame, Notre Dame, IN, June 17-20, 2012.

 

12. Cha Y.J., Agrawal A.K., and Dyke S.J., “Comparative studies of time-delay effect on semi-active control strategies for use with smart dampers,” Engineering Mechanics Institute 2012 conference, University of Notre Dame, Notre Dame, IN, June 17-20, 2012.

 

11. Cha Y.J. and Agrawal A.K., “Turbo-Lyapunov semi-active control algorithm using control device velocity responses for nonlinear highway bridge system,” Engineering Mechanics Institute 2011 conference, Northeastern University, Boston, MA, June 2-4, 2011.

 

10. Cha Y.J. and Agrawal A.K., “Performance-based control design using viscous damper for smart 3-D nonlinear building system,” Engineering Mechanics Institute 2011 conference, Northeastern University, Boston, MA, June 2-4, 2011.

 

9. Mitchell R.., Kim Y., Cha Y.J., Cassie B., and Woodington W., “A comparative study on control strategies of high-rise building,” Engineering Mechanics Institute 2011 conference, Northeastern University, Boston, MA, June 2-4, 2011.

 

8. Cha Y.J. and Agrawal, A.K., “A novel polynomial control algorithm for the seismically excited highway bridge benchmark,” 5th World Conference on Structural Control and Monitoring, Tokyo, Japan, July 12-14, 2010.

 

7. Cha Y.J., Agrawal A.K., and Kim Y., “Multi-objective optimal placements of actuators and sensors within 3-D structures,” 5th World Conference on Structural Control and Monitoring, Tokyo, Japan, July 12-14, 2010.

 

6. Friedman A., Zhang J., Cha Y.J., Phillips B., Jiang Z., Dyke S.J., Agrawal A.K., Spencer B.F., Ricles J., and Christenson R.E., “Accommodating MR damper dynamics for control of large scale structural systems,” 5th World Conference on Structural Control and Monitoring, Tokyo, Japan, July 12-14, 2010.

 

5. Kim Y., Sharifi R., Cha Y.J., and Langari R., “Sensor fault diagnosis of smart buildings,” 5th World Conference on Structural Control and Monitoring, Tokyo, Japan, July 12-14, 2010.

 

4. Cha Y.J. and Agrawal A.K., “A review of benchmark study on response control of wind-excited tall buildings,” 2010 Structural Congress, Orlando, Florida, May 12-15, 2010.

 

3. Cha Y.J., Narasimhan S., Agrawal A.K., and Nagarajaiah S., “A review of benchmark study on response control of seismically-excited highway bridges,” 2010 Structural Congress, Orlando, Florida, May 12-15, 2010.

 

2. Cha Y.J., Raich, A.M., and Barroso, L.R., “Near-optimal structural control architectures of active devices and sensors using gene manipulation genetic algorithms,” 8th World Congress on Structural and Multidisciplinary Optimization, Lisbon, Portugal, June 1-5, 2009.

 

1. Kim S.-H., Maha H.-S., Lee S.-W., and Cha Y.J., “Effects of energy-dissipating sacrificial device on seismic behavior under bi-directional ground,” Conference of Earthquake Engineering Society of Korea, Suwon, South Korea, 2004.

 

Presentations


17. “Convolutional neural network based damage detection using a UAV”, Canada-Korea Conference. KEIT technical committee, Ottawa, ON, August 16 2016.

 

16. “Unsupervised Novelty Detection Based Structural Damage Detection Method” 5th International Structural Specialty Conference CSCE. London, ON, June 1-4 2016.

 

15. “Decentralized Semi-Active Control For Multi-Performance-Based Design”, 5th International Natural Disaster Mitigation Specialty Conference CSCE. London, ON, June 1-4 2016.

 

14. “Motion Magnification Based Damage Detection Using High Speed Video” 10th International Workshop On Structural Health Monitoring (IWSHM), Stanford, USA, September 1, 2015.

 

13. “Advanced structural health monitoring system using high-speed video based measurements” Department of Civil Engineering, University of Manitoba Winnipeg, MA, March 18, 2014. (invited speaker)

 

12.. “Modal strain energy based damage detection using multi-objective optimization,” IMAC XXXII A Conference & Exposition on Structural Dynamics, Orlando, Florida, February 6, 2014.

 

11. “Multi-functional sustainable structural system using structural control & health monitoring system” Department of Civil Engineering, University of Colorado Denver, CO, Feb. 28, 2013. (invited speaker)

 

10. “Robustness studies of sensor fault and noise effects on advanced semi-active control strategies for use with MR dampers,” Engineering Mechanics Institute 2012 conference, University of Notre Dame, Notre Dame, IN, June 17-20, 2012.

 

9. “Comparative studies of time-delay effect on semi-active control strategies for use with smart dampers,” Engineering Mechanics Institute 2012 conference, University of Notre Dame, Notre Dame, IN, June 17-20, 2012.

 

8. “Structural control and health monitoring of 2-D and 3-D moment-resisting framed 20-story building structures,” Department of Civil &Environmental Engineering, Massachusetts Institute of Technology, Boston, MA, March 2, 2012. (invited speaker)

 

7. “Turbo-Lyapunov semi-active control algorithm using control device velocity responses for nonlinear highway bridge system,” Engineering Mechanics Institute 2011 conference, Northeastern University, Boston, MA, June 2-4, 2011.

 

6. “Performance-based control design using nonlinear viscous damper for smart 3-D nonlinear building system,” Engineering Mechanics Institute 2011 conference, Northeastern University, Boston, MA, June 2-4, 2011.

 

5. “Engineering Mechanics: Statics,” Mini-lecture, Department of Civil Engineering, The City College of the City University of New York, New York, NY, July 7, 2010.

 

4. “Multi-objective optimal placements of actuators and sensors within 3-D structures,” 5th World Conference on Structural Control and Monitoring, Tokyo, Japan, July 12-14, 2010.

 

3. “A novel polynomial control algorithm for the seismically excited highway bridge benchmark,” 5th World Conference on Structural Control and Monitoring, Tokyo, Japan, July 12-14, 2010.

 

2. “Novel semi-active control algorithms and MR damper mathematical models,” Department of Civil Engineering, Yonsei University, Seoul, Korea, Jan. 8, 2010.

 

1. “Structural control architecture optimization for 3-D systems using advanced multi-objective genetic algorithms,” The City College of the City University of New York, New York, NY, June 5, 2009.

 

Dissertations


Cha Y.J., (2008). “Structural Control Architecture Optimization for 3-D Systems Using Advanced Multi-Objective Genetic Algorithms,” Ph.D. Dissertation, Texas A&M University, College Station, TX.

 

Cha Y.J., (2004). “Application of Energy-Dissipating Sacrificial Device [EDSD] for Seismic Performance Improvement of Bridges Subjected to Bi-directional Ground Motions,” Thesis for Master’s degree, Yonsei University, Seoul, South Korea.