Biography

Professor C. G. Koh graduated with First Class Honours in 1979 from the then University of Singapore. Upon completion of his national service, he joined the NUS as a senior tutor in 1981. Subsequently, he went on a NUS overseas scholarship to further his graduate study at the University of California, Berkeley, where he obtained his M.S. and Ph.D. in 1983 and 1986, respectively. His Ph.D. thesis was entitled "Modelling of Dynamic Response of Elastomeric Isolation Bearings".

Since his senior-tutor days, Professor Koh's research interest has primarily been in structural dynamics, with applications on vibration isolation and control, system identification, nonlinear dynamic analysis, and experimental dynamics. To his credit, he has more than 140 international journal papers and conference papers and three invited book chapters. His papers have been well cited, with about 300 SCI-citations since 1993. He was promoted from senior lecturer-ship to become an associate professor in July 1998 and professor in Jan 2004. He served as a Sub-Dean of Engineering for two years and Deputy Head (Research) of the Department of Civil Engineering for five years. He subsequently served as the Vice Dean (Outreach) for one year and Vice Dean (Research) for two years in the Faculty of Engineering. He is currently the Director of the Faculty's Centre for Hazards Research.

Professor Koh is active in the professional and academic circle, serving in four journal editorial boards, including as an associate editor of a US-based journal on Structural Health Monitoring. He is also a registered professional engineer (civil) and has been engaged as an advisor/consultant in numerous projects including vibration analysis/measurement of many major infrastructure developments including close to vibration study of twenty high-tech projects in Singapore, Malaysia and China.

Qualifications

• Ph.D. University of California, Berkeley, USA 1986
• M.S. University of California, Berkeley, USA 1983
• M.Eng. National University of Singapore 1983
• B.Eng. (Hons 1) University of Singapore 1979
• P.Eng. Professional Engineers Board, Singapore 1995

Honours & Awards

• Marie Curie Fellowship by the Commission of European Communities, 1993/94
• IES Prestigious Publication (Theory) Award, 1997
• Three invited book chapters
• Invited to serve in editorial board – "Structural Health Monitoring" (Associate Editor), "Smart Structures and Systems", "Journal of Vibroengineering " and a local journal.
• Invited keynotes and lectures as follows:

Year	Title of Presentation/Authors	Conference/Symposium/Workshop
2007	"Computational Strategies for Inverse Problems in Structural Dynamics", C G Koh and M J Perry	International Conference on Computer Aided Engineering (CAE 2007), Chennai, India, Dec. 2007
2006	"Vibration and Performance of Subway Floating Slab Track System", C G Koh, D K H Chua and S L Lee	10th East Asia-Pacific Conference on Structural Engineering and Construction (EASEC-10), Bangkok, Thailand, Aug. 2006
2005	"Innovative Design of Micro-Vibration Sensitive Factories", S L Lee, C G Koh and D K H Chua	International Symposium on Innovation and Sustainability of Structures in Civil Engineering - Including Seismic Engineering (ISISS'2005), Nanjing, China, Nov. 2005
2005	"Damage Detection of Structures Using a Modified Genetic Algorithm", C G Koh and M J Perry	9th International Conference on Inspection, Appraisal, Repairs and Maintenance of Structures, Fuzhou, Fujian, China, Oct. 2005
2005	"Analysis and Design of Micro-Vibration Sensitive Buildings", S L Lee, C G Koh and D K H Chua	30th Conference on Our World in Concrete and Structures (OWICS 2005), Singapore, Aug. 2005
2004	"Conceptual Design of Micro-Vibration Sensitive Buildings", S L Lee, C G Koh and D K H Chua	IES/IEM/PII Tripartite Conference on Major Buildings and Infrastructural Construction Projects, Singapore, Mar. 2004
2003	"Structural Health Monitoring: A Perspective from System Identification", C G Koh	3rd International Conference on New Dimensions in Bridges, Flyovers, Overpasses and Elevated Structures, Kuala Lumpur, Malaysia, Apr.2003
2003	"Structural Parameter Identification : A Divide-and-Conquer Approach", C G Koh	International Workshop on Structural Health Monitoring of Bridges / Colloquium on Bridge Vibration '03, Kitami, Japan, Sep. 2003
2002	"Vibration-Based Assessment of Old Structures", C G Koh	1st International Conference on Vulnerability of 20th Century Heritage to Hazards and Prevention Measures, City of Rhodes, Greece, Apr. 2002
2002	"A Soft Computing Approach of Vibration Diagnostics", C G Koh	International Symposium on Vibration Monitoring and Diagnostics (VMD-2001), Karachi, Pakistan, Feb.2002
2001	"Vibration-Based Inspection of Structures: Computational Challenges and Strategies", C G Koh	7th International Conference on Inspection, Appraisal, Repairs and Maintenance of Buildings and Structures, Nottingham, United Kingdom, Sep.2001
2000	“Challenges in parameter identification of large structural dynamic systems”, C G Koh	2nd International Symposium on Mechanical Vibrations, Islamabad, Pakistan, Sep. 2000
2000	“Parameter identification of structural dynamic systems – Classical versus non-classical methods”, C G Koh	International Conference on Advanced Problems in Vibration Theory and Application, Xi’an, China, June 2000 (Invited Lecture)

Professional Activities

• Council member, International Society for Structural Health Monitoring of Intelligent Infrastructure
• Dynamics Committee, American Society of Civil Engineers
• Founding member and Vice President of the Earthquake Society (Singapore)

Teaching Areas

• Engineering Dynamics (Level 1)
• Structural Analysis (Level 2)
• Structural Dynamics (Level 4)
• Finite Element Methods (Level 4 and Graduate)
• Experimental Methods in Civil Engineering (Graduate)
• Numerical Methods for Engineering Mechanics (Graduate)
• Integrated Design Project (Level 4)

Research Interests

• Nonlinear dynamic analysis (offshore structures, concrete damage, cable dynamics)
• System identification and health monitoring of structural systems
• Vibration isolation and passive control
• Dynamic soil-structure interaction
• Moving element method

Selected Publications

1. C. G. Koh and J. M. Kelly, "Viscoelastic stability model for elastomeric isolation bearings", Journal of Structural Engineering, ASCE, V115, 1989, pp. 285-302.
2. C. G. Koh and J. M. Kelly, “Applicability of the Southwell plot to shear deformable columns”. Journal of Testing and Evaluation, ASTM, V17, 1989, pp. 287-291.
3. C. G. Koh and J. M Kelly, "Application of fractional derivatives to seismic analysis of base-isolated models", Earthquake Engineering & Structural Dynamics, V19, 1990, pp. 229-241.
4. C. G. Koh, T. Balendra and L.M. See, "Estimation of structural parameters in time domain: A substructure approach", Earthquake Engineering & Structural Dynamics, V20, 1991, pp. 787-801.
5. C. G. Koh, S. Mahatma and C. M. Wang, "Theoretical and experimental studies on rectangular liquid dampers under arbitrary excitations", Earthquake Engineering & Structural Dynamics, V23, 1994, pp. 17-31
6. C. G. Koh and L. M. See, "Identification and uncertainty estimation of structural parameters", Journal of Engineering Mechanics, ASCE, V120, 1994, pp. 1219-1236.
7. C. G. Koh, L.M. See and T. Balendra, "Damage detection of buildings: numerical and experimental studies", Journal of Structural Engineering, ASCE, V121, 1995, pp. 1155-1160.
8. C. G. Koh, D. R. J. Owen and D. Peric, "Explicit dynamic analysis of elastic-plastic laminated composite shells: Implementation of non-iterative stress update schemes for the Hoffman yield criterion", Computational Mechanics, V16, 1995, pp. 307-314.
9. C. G. Koh, S. Mahatma and C. M. Wang, “Reduction of structural vibrations by multiple-mode liquid dampers”, Engineering Structures, 17, 1995, pp. 122-128.
10. C. G. Koh, K. K. Ang and R. Xu, "An eigen-force method for finite element analysis and reanalysis", International Journal for Numerical Methods in Engineering, V40, 1997, pp. 777-796.
11. C. G. Koh, Y. Zhang and S. T. Quek, "Low-tension cable dynamics: numerical and experimental studies", Journal of Engineering Mechanics, ASCE, V125, 1999, pp. 347-354.
12. C. G. Koh, B. Hong and C. Y. Liaw, "Parameter identification of large structural systems in time domain", Journal of Structural Engineering, ASCE, V126, 2000, pp.957-963.
13. C. G. Koh and H. L. Lim, “Analytical solution for compression stiffness of bonded rectangular layers”, International Journal of Solids and Structures, V38, 2001, pp. 445-455.
14. C. G. Koh, J. S. Y. Ong, D. K. H. Chua and J. Feng, “Moving element method for train-track dynamics”, International Journal for Numerical Methods in Engineering, V56, 2003, pp. 1549-1567.
15. C. G. Koh, Y. F. Chen and C. Y. Liaw, “A hybrid computational strategy for identification of structural parameters”, Computers & Structures, V81, 2003, pp. 107-117.
16. C. G. Koh, G. Q. Qiao and S. T. Quek, “Damage identification of structural members: Numerical and experimental studies”, Structural Health Monitoring, V2, 2003, pp. 41-55.
17. C. G. Koh and K. Shankar, “A substructural identification method without interface measurement”, Journal of Engineering Mechanics, ASCE, V129, 2003, pp. 769-777.
18. C. G. Koh, K. K. Ang and P. F. Chan, “Dynamic analysis of shell structures with application to blast resistant doors”, Journal of Shock and Vibration, V10, 2003, pp. 269-279.
19. C. G. Koh and Y. Rong, “Dynamic analysis of large displacement cable motion with experimental verification”, Journal of Sound and Vibration, 2004 (In press).
20. C. G. Koh, B. Hong and C. Y. Liaw, “Substructural and progressive structural identification methods”, Engineering Structures, V25, 2003, pp. 1551-1563.
21. Z. S. Liu, S. Swaddiwudhipong and C. G. Koh, "High velocity impact dynamic response of structures using SPH method", International Journal of Computational Engineering Sciences (IJCES), V5, 2004, pp. 315-326.
22. H. Chen, X. Zhou, C. Y. Liaw and C. G. Koh, "Kinetic analysis of protein folding lattice models", Modern Physics Letters B, V18, 2004, pp. 163-172.
23. K. F. Tee, C. G. Koh and S. T. Quek, "Substructural first- and second-order model identification for structural damage assessment", Earthquake Engineering & Structural Dynamics, V34, 2005, pp. 1755-1775.
24. C. G. Koh, P. P. Sze and T. T. Deng, "Numerical and analytical methods for in-plane dynamic response of annular disk", International Journal of Solids and Structures, V43, 2006, pp. 112-131.
25. M. J. Perry, C. G. Koh and Y. S. Choo, "Modified genetic algorithm strategy for structural identification". Computers & Structures, V84, 2006, pp. 529-540.
26. 26. C G Koh, KF Tee and S T Quek, "Condensed model identification and recovery for structural damage assessment". Journal of Structural Engineering, ASCE, 132, no. 12 (2006): 2018 2026.
27. C. G. Koh and M Perry, "Structural damage quantification by system identification". Journal of Earthquake and Tsunami, 1, no. 3 (2007): 211 231.
28. C G Koh, G H Chiew and C C Lim, "A numerical method for moving load on continuum". Journal of Sound and Vibration, 300 (2007): 126 138.
29. H. Chen, H. Fu and C G Koh, "Sequence dependent Unpeeling dynamics of stretched DNA double helix". Journal of Computational and Theoretical Nanoscience, 5, no. 7 (2008): 1381 1386.
30. M. J. Perry and C G Koh, "Output only structural identification in time domain: Numerical and experimental studies". Earthquake Engineering & Structural Dynamics, 37 (2008): 517 533.