Biography

Professor CHOO Yoo Sang is the Lloyd’s Register Educational Trust Chair Professor in National University of Singapore. He is Immediate Past President of The Institute of Marine Engineering Science & Technology (IMarEST) from March 2009. The Institute was established in London in 1889, and is the leading international membership body and learned society for marine professionals, with over 15,000 members worldwide.

Professor Choo graduated from the University of Manchester with First Class Honours in 1977, and was supervised by Professor M. R. Horne for his MSc and PhD projects. He worked on structural behaviour of deepsea production systems before joining VO Offshore (U.K.) to design floating and fixed offshore structures. He returned to Singapore in 1984 and worked for McDermott South East Asia on the design, analysis and installation of offshore platforms. He joined the National University of Singapore in 1987, and served as Director of CAE/CAD/CAM Centre from 1995 to 1999.

Professor Choo has served in many scientific or technical committees of international organizations and conferences, and hosted as Chairman or Co-Chairman for some of the conferences. He served as President of Singapore Structural Steel Society from 1992 to 1994, and in the Board of Directors, International Society of Offshore & Polar Engineers during 2000-2002. He has been invited as Visiting Professor to Delft University of Technology since 2000. He has served as member of Editorial Board for Journal of Marine Structures, International Journal of Ships and Offshore Structures, Journal of Marine Engineering and Technology and International Journal of Naval Architecture and Ocean Engineering.

Professor Choo is Chairman of Singapore Mirror Committee for International Standards Organisation TC67/SC7 Offshore Structures and is member of International Institute of Welding Sub-commission XV-E: Tubular Structures. He is Correspondent for Singapore and member of Technical Committee III.1: Ultimate Strength in International Ships and Offshore Structures Congress.

Professor Choo has received a number of international and national recognitions, including Lifetime Achievement Award – Maritime Academics, two ISOPE Awards for his significant contributions to the International Society of Offshore & Polar Engineers. His research team also won the Stanley Gray Award 2001 for best paper in offshore technology presented by IMarEST (UK), and the Prestigious Engineering Achievement Award 2003 presented by the Institution of Engineers Singapore. He is co-recipient of the James Watt Medal 2005 from the Institution of Civil Engineers (UK), and received the Stanley Gray Medal 2005 from IMarEST (UK).

Professor Choo was conferred the Honorary Fellowship of Singapore Structural Steel Society (SSSS) in 2004 in recognition of his technical expertise, outstanding contribution and development in Offshore and Structural Engineering. He has served as technical consultant in major offshore projects, and initiated or participated in international joint industry projects.

Qualifications

• BSc Hons (First Class) (1977), University of Manchester, England
• MSc (1979), University of Manchester, England
• PhD (1981), University of Manchester, England
• Fellow, The Institute of Marine Engineering Science & Technology (UK)
• Fellow, The Royal Institution of Naval Architects (UK)
• Chartered Engineer (United Kingdom)
• Chartered Marine Engineer (United Kingdom)
• Professional Engineer (Singapore)

Honours & Awards

• Lifetime Achievement Award – Maritime Academics received during ShipTek 2009, 3rd International Maritime Video and Excellence Awards, Singapore, 7 May 2009
• James Watt Medal 2005 from The Institution of Civil Engineers, UK for Best Paper with significant energy content
• Stanley Gray Medal 2005 and Institute Branch Award 2005 from The Institute of Marine Engineering Science & Technology, UK for Best Paper presented to East Asia Division of IMarEST
• Hononary Fellow, Singapore Structural Steel Society (2004)
• IES Prestigious Engineering Achievement Award 2003 from The Institution of Engineers Singapore
• ISOPE Award 2002 from International Society of Offshore and Polar Engineers
• Stanley Gray Award 2001 from The Institute of Marine Engineers, UK for Best paper in Offshore Technology
• Visiting Professor, Delft University of Technology (2000-)
• ISOPE Award 1993 from International Society of Offshore and Polar Engineers
• Edgar Morton Prize, University of Manchester (1977)
• Member of Editorial Board, Journal of Marine Structures
• Member of Editorial Board, International Journal of Ships and Offshore Structures
• Member of Editorial Board, Journal of Marine Engineering and Technology.
• Member of Editorial Board, International Journal of Naval Architecture and Ocean Engineering
• Listed in Marquis Who’s Who in the World
• Listed in Marquis Who’s Who in Asia
• Listed in Marquis Who’s Who in Science & Engineering

Keynote/Invited Papers

• Keynote Paper on “Dynamic Load Positioning for Installation of Subsea Systems”, International Conference on Subsea Technologies, St Petersburg, Russia, June 2009
• Keynote Lecture on “Nonlinear Analysis and Design of Fixed Offshore Platforms”, China Offshore Engineering Summit 2009, Shanghai, China, February 2009.
• Keynote Presentation on “Cooperation Amongst PAAMES Member Societies in Education and R&D – Personal Perspectives”, 3rd Pan Asian Association of Maritime Engineering Societies Meeting and Advanced Maritime Engineering Conference (AMEC 2008), Chiba-city, Japan, October 2008.
Keynote Lecture on "Recent Developments in Construction Techniques for Floating Structures". Pacific International Maritime Conference, Jan 2008, Sydney, Australia.
• Keynote Lecture on "Numerical and Experimental Investigations on Behaviour of Tubular Joints and Frames". International Conference on Enhancement and Promotion of Computational Methods in Engineering Science and Mechanics, August 2006, Changchun, China.
• Keynote Paper on "Some Developments in Tubular Joint Research". 4th International Conference on Advances in Steel Structures, Shanghai, China, June 2005.
• Keynote Lecture on "Heavy Lift Engineering Research". 1st Asia-Pacific Conference on Offshore Systems, Subang Jaya, Malaysia, April 2001
• Keynote Paper, in First Asia-Pacific Conference on Offshore Systems: Mobile and Floating Structures, Kuala Lumpur, 1996.
• Invited Lecture on "Nonlinear Analysis and Design of Fixed Offshore Platforms". 2006 Symposium on Offshore Platform Technology for Offshore Oil and Gas Field Development, Beijing, China, June 2006.
• Invited Lecture on "Construction Techniques for Offshore Drilling and Production Systems". International Symposium on Deepwater Offshore Technology, Harbin, Heilongjiang, China, April 2006.
• Invited Paper on "Nonlinear Analysis of Offshore Structures with Incorporation of Local Joint Flexibility". 10th International Conference on Jack-Up Platform Design, Construction and Operation, London, September 2005.
• Invited Paper on "Recent Development and Innovation in Tubular Structures", International Symposium on Innovation and Advances in Steel Structures, Singapore, August 2004.
• Invited Paper on "An Effective External Reinforcement Scheme for Circular Hollow Section Joints", ECCS / AISC Workshop - Connections in Steel Structures V: Innovative Steel Connections, June 2004, Amsterdam, The Netherlands
• Invited Paper, World Maritime Technology Conference: Marine Industry Challenges in the New Global Environment, San Francisco, California, USA, October 2003
• Invited Paper, 9th International Conference on Jack-Up Platform Design, Construction & Operation, London, England, September 2003

Professional Activities

• President, The Institute of Marine Engineering Science & Technology (2008-2009)
• Chairman, Singapore Joint Branch of The Royal Institution of Naval Architects and The Institute of Marine Engineering Science & Technology (2004-2007)
• Fellow of Council, The Institute of Marine Engineering Science & Technology (2005-)
• Chairman, Singapore Mirror Committee, International Standards Organisation TC67/SC7 Offshore Structures (2009-)
• Member, International Institute of Welding Sub-commission XV-E: Tubular Structures (1999-).
• Correspondent for Singapore and member of Technical Committee III.1: Ultimate Strength in International Ships and Offshore Structures Congress (2003-).
• Board of Directors, International Society of Offshore & Polar Engineers (2000-2002)
• Chairman, Structures and Materials Committee, International Society of Offshore & Polar Engineers (2000-2002)
• President, Singapore Structural Steel Society (1992-1994)
• Technical Programme Committee, International Conference on Offshore & Polar Engineering Conferences (1998-2005)
• International Programme Committee, International Conference on Computer Applications in Shipbuilding, ICCAS series of conferences
• Local Chairman, and International Programme Committee, 8th International Symposium on Tubular Structures, Singapore, 1998
• Member, International Programme Committee, International Symposium on Tubular Structures (Germany - 2001, Spain - 2003, Canada – 2006, China–2008, Hong Kong-2010)
• Member, PACOMS Executive Committee, International Society of Offshore and Polar Engineers (1993-2000)

Teaching Areas

• Analysis and Design of Offshore Structures
• Advanced Structural Steel Design
• Design of Steel Structural Systems
• Stability and Dynamics of Structures
• Plastic Analysis of Structures
• Structural Mechanics
• Mechanics of Materials
• Coordinator, Final Year Design Project

Research Interests

• Strength and fatigue capacity of tubular and plated structures and their components
• Marine operations and Installation engineering
• Knowledge-based engineering system development

Selected Publications

1. Choo, Y S, K C Choi and K H Lee, The effect of eyebar shape and pin/hole tolerance on its ultimate strength. Journal of Constructional Steel Research, 26 (1993): 153-169.
2. Fuh, J Y H, Y S Choo, A Y C Nee, L Lu and K C Lee, Improvement of the V curing process for the laser lithography technique. Materials & Design, 16, no. 1 (July 1995): 23-32. ( United Kingdom).
3. Lim, C K, Y S Choo and A Y C Nee, Object-Oriented Approach in Design for Lift Installation of Offshore Structures. Microcomputers in Civil Engineering, 10, 3 (1995): 205-218.
4. Lu, L, J Y H Fuh, Y S Choo, A Y C Nee and K C Lee, Material characterization of photo-fabrication process. Materials and Manufacturing Processes, 10, no. 4 (1995): 653-666.
5. Choo, Y S, F Ju and K H Lee, Static sling Tensions in Heavy Lifts with Doubled Sling Arrangement. International Journal of Offshore and Polar Engineering, 7, 4 (December 1997): 313-320.
6. Fuh, J Y H, Y S Choo, L Lu, A Y C Nee, Y S Wong and W L Wang, Post-cure shrinkage of photo-sensitive material used in laser lithography process. Journal of Materials Processing Technology, 63 (1997): 887-891.
7. Cheah, C M, A Y C Nee, J Y H Fuh, L Lu and Y S Choo, Characteristics of photopolymeric material used in rapid prototypes, Part I - Mechanical properties in the green state. Journal of Materials Processing Technology, 67 (1997): 41-45.
8. Cheah, C M, J Y H Fuh, A Y C Nee, L Lu and Y S Choo, Characteristics of photopolymeric material used in rapid prototypes, Part II - Mechanical properties in post-cured state. Journal of Materials Processing Technology, 67 (1997): 46-49.
9. Liew, R J Y, Ling Kan Tang, Tore Holmuas and Y S Choo, Advanced analysis for the assessment of steel franes in fire. Journal of Constructional Steel Research, 47, no. 1-2 (1998): 19-45.
10. Choo, Y S, F Ju, L Li and M Li, A Decision Support System for Heavy Lift. International Maritime Technology: Transactions, 2, 112 (2000): 43-51.
11. Liu, A Q, B Wang, Y S Choo and K S Ong, The Effective Design of Bean Bag as a Vibroimpact Damper. Shock and Vibration, 6, 7 (2000): 343-354
12. Choo, Y S, C K Quah, N E Shanmugam and R J Y Liew, Fabricated Trunnions for Heavy Lift. International Maritime Technology: Transactions, 2, 113 (2001): 64-76.
13. Liew, R J Y, L K Tang and Y S Choo, Advanced analysis for performance-based design of steel structures exposed to fires. Journal of Structural Engineering - ASCE, 128, 12 (2002): 1584-1593.
14. Choo, Y S, C K Quah, N E Shanmugam and R J Y Liew, Static Strength of Plate Trunnions Subjected to Shear Loads: Part I: Experimental Study. Journal of Constructional Steel Research, 58, No.2 (2002): 301-318.
15. Choo, Y S, C K Quah, N E Shanmugam and R J Y Liew, Static Strength of Plate Trunnions Subjected to Shear Loads: Part II: Computational Study and Design Considerations. ||Journal of Constructional Steel Research, 58, No.2 (2002): 319-322.
16. Choo, Y S, X.D. Qian, R J Y Liew and J. Wardenier, Strength of Thick-walled CHS X-joints - Part I. New Approach in Strength Definition. Journal of Constructional Steel Research, 59 (2003): 1201-1228.
17. Choo, Y S, X.D. Qian, R J Y Liew and J. Wardenier, Static Strength of Thick-walled CHS X-joints - Part II. Effect of Chord Stresses. Journal of Constructional Steel Research, 59 (2003): 1229-1250.
18. Liu, Y, T F Fwa and Y S Choo, Finite Element Modeling of Skid Resistance Test. Journal of Transportation Engineering, 129, 3 (2003): 316-321.
19. Fwa, T F, Y S Choo and Y. R. Liu, Effect of Aggregate Spacing on Skid Resistance of Asphalt Pavement. Journal of Transportation Engineering, 129, 4 (2003): 420-426.
20. Boh, J.W., L.A. Louca and Y SChoo, Numerical assessment of explosion resistant profiled barriers. Marine Structures, 17 (2004): 139-160.
21. Choo, Y S, J Liang, G.J. van der Vegte and R J Y Liew, Static Strength of Collar Plate Reinforced CHS X-joints Loaded by In-Plane Bending. Journal of Constructional Steel Research, 60 (2004): 1745-1760.
22. Choo, Y S, J Liang, G.J. van der Vegte and R J Y Liew, Static Strength of Doubler Plate Reinforced CHS X-joints Loaded by In-Plane Bending. Journal of Constructional Steel Research, 60 (2004): 1725-1744.
23. Lee, K H, Y S Choo and F Ju, Finite Element Modelling of Frictional Slip in Heavy Lift Sling Systems. Computers & Structures, 81 (2003) 2673 - 2690.
24. Louca, L.A., J.W. Boh and Y S Choo, Deformation and Failure of Profiled Barriers Subjected to Hydrocarbon Explosions. Proceedings of the Institution of Civil Engineers, Structures & Buildings, 160 (2004) SB1 pp. 1-13
25. Boh, J.W, L.A. Louca and Y S Choo, Strain Rate Effects on the Response of Stainless Steel Corrugated Firewalls Subjected to Hydrocarbon Explosions. Journal of Constructional Steel Research, 60 (2004) pp. 1-29.
26. Choo, Y S, X QIAN and K.S. Foo, Static strength variation of thick-walled CHS X-joints with different included angles and chord stress levels. Marine Structures, 17 (2004): 311-324.
27. Gayathri, V, N E Shanmugam and Y S Choo, Concrete-Filled Tubular Columns: Part 1 - Cross-Section Analysis. International Journal of Structural Stability and Dynamics, 4, 4 (2004): 459-476.
28. Gayathri, V, N E Shanmugam and Y S Choo, Concrete-Filled Tubular Columns: Part 2 - Column Analysis. International Journal of Structural Stability and Dynamics, 4, 4 (2004): 479-496.
29. Louca, L.A., J.W. Boh and Y.S. Choo, Design and analysis of stainless steel profiled blast barriers. Journal of Constructional Steel Research, 60 (2004): 1699-1723.
30. Louca, L.A., J.W. Boh and Y.S. Choo, Response of profiled barriers subject to hydrocarbon explosions. Proceedings of the Institution of Civil Engineers: Structures and Buildings, 157, 5 (1 October 2004): 319-331.
31. Qian X., R.H. Dodds, Y.S. Choo, Elastic-plastic Crack Driving Force for Tubular X-joints with Mismatched Welds, Engineering Structures, 27,9, (2005): 1419-1434.
32. Choo Y.S., Recent Development and Innovation in Tubular Structures, Advances in Structural Engineering, 8,3, (2005): 217-230.
33. Qian X.D., Y.S. Choo, J.Y.R. Liew and J. Wardenier, Simulation of Ductile Fracture of CHS Joints Using the Gurson Model. Journal of Structural Engineering – ASCE 131, 5, (2005): 768-780.
34. Boh J.W., L.A. Louca, Y.S. Choo, Energy Absorbing Passive Impact Barrier for Profiled Blastwalls. International Journal of Impact Engineering, 31,8, (2005): 976-995.
35. Ju F., Y.S. Choo, Super Element Approach to Cable Passing Through Multiple Pulleys. International Journal of Solids and Structures ,42, 11-12, (2005): 3533-3547
36. Boh J.W., L.A. Louca, Y.S. Choo, S.E. Mouring, Damage Modeling of SCRIMP Woven Roving Laminated Beams Subjected to Transverse Shear, 36, 5, (2005): 427-438.
37. Ju, F and Y S Choo, Dynamic Analysis of Tower Cranes. Journal of Engineering Mechanics – ASCE 131,1, (2005): 88-96
38. Qian XD, Dodds RH and Choo YS, Mode mixity for circular hollow section X-joints with weld toe cracks, Journal of Offshore Mechanics and Arctic Engineering – Transactions of ASME, 127 (3): 269-279, Aug 2005
39. Choo, Y S, G.J. van der Vegte, N. Zettlemoyer, B.H. Li and R J Y Liew, Static Strength of T-joints Reinforced with Doubler or Collar Plates - Part I. Experimental Investigations. Journal of Structural Engineering – ASCE, 131, 1, (2005): 119-128
40. van der Vegte, G.J., Y S Choo, J Liang, N. Zettlemoyer and R J Y Liew, Static Strength of T-joints Reinforced with Doubler or Collar Plates - Part II. Numerical Simulations. Journal of Structural Engineering – ASCE, 131, 1, (2005): 129-138
41. Ju, F., Y.S. Choo and F.S. Cui, Dynamic response of tower crane induced by the pendulum motion of the payload. International Journal of Solids and Structures 43 (2006) 376–389
42. Choo YS, Qian XD and Wardenier, J. Effects of boundary conditions and chord stresses on static strength of thick-walled CHS K-joints. Journal of Constructional Steel Research. 62 (2006): 316-328.
43. Qian X, Dodds RH, Choo YS., Mode mixity for tubular K-joints with weld toe cracks, Engineering Fracture Mechanics, 73 (10): 1321-1342 Jul 2006
44. Wardenier J, and Choo YS, Recent developments in welded hollow section joint recommendations. Advanced Steel Construction, 2 (2006): 109-127.
45. Wang CM, Wu TY, Choo YS et al., Minimising differential deflection in a pontoon-type very large floating structure via gill cells, Marine Structures, 19 (1): 70-82, Jan 2006
46. Perry MJ, Koh CG and Choo YS, Modified genetic algorithm strategy for structural identification, Computers and Structures, 84 (8-9): 529-540, Mar 2006
47. Qian XD, Dodds RH and Choo YS, Elastic-plastic crack driving force for tubular K-joints with mismatched welds, Engineering Structures, 29 (6): 865-879, Jun 2007
48. Choo YS and Qian XK, Neural network-based evaluation of SCF distribution at the intersection of tubular x-joints, Mechanics of Advanced Materials and Structures, 14 (7): 511-522, Oct 2007
49. Qian XD, Choo YS, Liew JYR and Wardenier J, Static strength of thick-walled CHS x-joints subjected to brace moment loadings, Journal of Structural Engineering – ASCE, 133 (9): 1278-1287, Sept 2007
50. Yuen DZ, Ivanov LD, Wang G and Choo YS, Structural reliability assessment of aging ships using the concept of level of certainty, Marine Technology and SNAME News, 45 (3): 132-146, Jul 2008
51. How BE, Ge SS and Choo YS, Active control of flexible marine risers, Journal of Sound and Vibration, 320 (4-5): 758-776, Mar 2009