Qian Xudong

Biography

Dr Qian Xudong is currently a Dean’s Chair Associate Professor in the Department of Civil and Environmental Engineering (CEE). He is currently serving as the Deputy Head (Administration and Finance) for CEE, Director (Strategy, Partnership and Technology Translation) for Coastal Protection and Flood Resilience Institute (CFI) Singapore, Director for the Centre for Offshore Research and Engineering (CORE), and Director for the Centre for Advanced Materials and Structures (CAMS). His research work is mainly on the dada-driven structural digital twins, fracture, fatigue, and integrity assessments for engineering materials and large-scale structures, floating structures, composite materials, and structures.

Positions Held

• 2014 – date: Associate Professor, National University of Singapore
• 2007 – 2013: Assistant Professor, National University of Singapore
• 2006 –  2007: Post-doctoral Research Associate, Department of Civil and Environmental Engineering, University of Illinois at Urbana Champaign, U.S.A.

Qualifications

• PhD, Civil, National University of Singapore, Singapore, 2005
• BEng, Hons, Civil, National University of Singapore, Singapore, 2000

Editorial Boards

• International Journal of Fatigue
• Engineering Fracture Mechanics
• Engineering Structures
• Fatigue & Fracture of Engineering Materials & Structures
• Associate Editor, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science

Honours & Awards

• 2024:  The Institution of Engineers Singapore (IES) – Prestigious Engineering Achievement Awards 2024 “Structural Digital Twin of Jack-up Platform – Methodology Verification & Validation”
• 2019:   Nishino Prize, 16th East Asia Pacific Conference on Structural Engineering & Construction
• 2020:   Gold Award, Singapore Accreditation Council
• 2017:   Silver Award, Singapore Accreditation Council
• 2016:   Bronze Award, Singapore Accreditation Council

Professional Activities

• 2014 – present, member, American Society of Testing and Materials, Technical Committee E8 – fatigue and fracture
• 2012 – 2015, member, Technical Committee III.1 – Ultimate Strength, International Ship and Offshore Structures Congress.
• 2012 – present, member of the conference committee, OTC Asia
• 2009 – 2012, member, Technical Committee III.2 – Fatigue and Fracture, International Ship and Offshore Structures Congress.

Teaching Areas

• Structural mechanics and mechanics of materials
• Fatigue and fracture of offshore structures
• Plastic structural analysis
• Structural steel design

Research Areas

• Structural digital twin
• Structural integrity assessment
• Fatigue and fracture in large-scale structures
• Composite materials and structures
• Floating structures
• Additive manufacturing for metals

Research Projects

• • • Principal Investigator (2024-2028): Smart and Multifunctional Floating Structures for Coastal Protection and Flood Control, CFISG
    • Team Principal Investigator (2024-2028): ENabling Future Systems for Offshore Wind ResourCEs  (ENFORCE) – WP 3 RIE2025 MTC Industry Alignment Funding – Pre-Positioning, ASTAR
    • NUS PI (2024-2026) Novel Offshore Fish Pen Design: Phase 2 (Model Tests, Concept Qualification and Design Optimization), Blue Economy CRC.
    • Principal Investigator (2020-2023): Enhancing Offshore System Productivity, Integrity and Survivability in Extreme Environments (ENSURE) – WP 2 Local digital twin. Industry Alignment Funding – Pre-Positioning, ASTAR
    • Principal Investigator (2020-2023): Enhancing Offshore System Productivity, Integrity and Survivability in Extreme Environments (ENSURE) – WP 3 Integrity. Industry Alignment Funding – Pre-Positioning, ASTAR
    • Principal Investigator (2020-2022): Collaborative Research with ADMA on the Performance of Pile-Leg Grouted Sleeve Connections. ADNOC
    • Principal Investigator (2020 – 2022): Enhanced Connection Technology for Modular Structures in Strong Seismic Regions. China Harbour (Singapore) Engineering Company Pte Ltd.
    • Principal Investigator (2019 – 2021): Substitution of natural sand with granite dust in concrete production. Cities of Tomorrow Program, National Research Foundation (NRF).
    • Principal Investigator (2017-2020): Ductile fracture in welded connections under seismic loading. State Key Laboratory in Tongji University
    • Principal Investigator (2015-2018): An Enhanced Failure Assessment Protocol Based on Accurate Defect Detection and Sizing, Singapore Maritime Institute.
    • Principal Investigator (2014-2019): Dynamic Response of Floaters under Ice Loading and Arctic Conditions, Keppel-NUS Corp Lab, NRF.
    • Principal Investigator (2014-2019: FEM Analysis and Testing of An Innovative Coupling Arm between Two Deep-water Floating Platforms, Keppel-NUS Corp Lab, NRF.
    • Principal Investigator (2013-2016): Mechanics and Optimization of Composite Risers, ASTAR
    • Principal Investigator (2012-2015): Assessment of Cleavage Fracture for Structural Steels in Arctic Applications. MPA, ABS and SembCorp
    • Principal Investigator (2009-2013): Improved Partial Joint Penetration (PJP-plus) An Alternative to Complete Penetration Welds in Tubular Connections. Joint Industry Project funded by McDermott International Inc., Nippon Steel and Sumikin Engineering Co., American Bureau of Shipping, and HGG Group.
    • Principal Investigator (2010-2013): Concrete-Filled Pipe-in-Pipe Composite Structures Under Impact Loading, MOE Tier 1.
    • Principal Investigator (2010-2012): Failure Assessment of Thick-Walled Circular Hollow Section (CHS) Joints in Jack-ups – Phase I: Development of the Fundamental Approach, MPA and ABS
    • Principal Investigator (2009-2013): Ductile Fracture Resistance of Critical Joints in Fixed Offshore Structures under Hazardous Events, ASTAR and MPA
    • Principal Investigator (2007-2010): Ductile fracture resistance of high-strength pipelines. MOE Tier 1 (NUS start-up)
    • Co-PI (2015 – 2018): Multipurpose Floating Structures, Funded by L2NIC.
    • Co-PI (2013-2015): Prototype FPSWizard: A Design Support System to Improve the Selection and Design of Personal Fall Protection Systems, Workplace Safety and Health Institute.
    • Co-PI (2012-2015): Stochastic Dynamic Analysis and Reliability Assessment of Steel Catenary Risers in Deep Water, ASTAR and MPA.
    • Co-PI (2009-2013): Re-Assessment and Retrofitting of Offshore Platforms, ASTAR and MPA.
    • Collaborator (2009-2015): Joint industry project on strength and fatigue of grouted tubular joints.

Research Team

Post-doctoral Research Fellows

• Dr Chen Cheng (PhD from NUS)
• Dr Wang Le (PhD from NUS)
• Dr Liuyang Feng (former post-doc, PhD from NUS, now at Foxconn Technology Group)
• Dr Tianyao Liu (former post-doc, PhD from NUS, now at Worley)
• Hongyou Cao (former post-doc, PhD from HUST, now Professor at Wuhan University of Technology)
• Yunlai Zhou (former post-doc, PhD from Technical University of Madrid, now Associate Professor at Xi’An Jiaotong University)
• Kim Min Ook (former post-doc, PhD from the University of Uta, now Assistant Professor at Seoul National University of Science and Technology)
• Aziz Ahmed (former post-doc, PhD from NUS, now Lecturer at the University of Wollongong)
• Jiabao Yan (former post-doc, PhD from NUS, now Professor at Tianjin University)
• Dr Wei Zhang (former post-doc, PhD from Tsubuka University, Japan, now Professor at Fujian University of Technology)
• Ya Li (former post-doc, PhD from NUS, now at EMAS, Singapore)
• Nguyen Chien Thang (former post-doc, PhD from Sherbrooke, Canada, now Lecturer at Duy Tan University, Vietnam)
• Tieping Li (former post-doc, PhD from Chinese Academy of Science, now at National Nuclear Safety Administration)

PhD students (on-going)

• Xuejie Zhang (since Aug 2024)
• Kaiming Liu (since Aug 2023)
• Zhexin Lyu (since Jan 2023)
• Zhiyuan Liu (since Aug 2022)
• Evan Cheok Wei Wen (since Aug 2021)

PhD students – Completed

• Le Wang (graduated in 2024, now Post-doc in NUS)
• Cheng Chen (graduated in 2023, now Post-doc in NUS)
• Ni Zhen (graduated in 2022, now at Subsea 7)
• Dr Tianyao Liu (graduated in 2021, now at Worley)
• Dr Liuyang Feng (graduated in 2019, now at Foxconn Technology Group)
• Dr Seah Teik Tian Kelly (graduated in 2019, now at PUB)
• Dr Neha Parool (graduated in 2017, now in Dassault Systèmes, Singapore)
• Dr Mochamad Raditya Pradana (Graduated in 2016, now at Worley)
• Dr Zefeng Zhang (Graduated in 2016, now at Facebook USA)
• Dr Zhiping Chen (Graduated in 2016, now at TCOMS)
• Dr Shuang Chen (graduated in 2016)
• Dr Kittikun Jitpairod (graduated in 2016)
• Dr Yu Wang (graduated in 2015, now at China IPPR International Engineering Co., LTD)
• Dr Zhang Yang (graduated in 2013, now at Vanke Group)
• Dr Yi Feng Wah (graduated in 2013, now at GTC, Lloyd’s Register, Singapore)
• Dr Zhiyong Ou (graduated in 2013)
• Dr Wuchao Yang (graduated in 2012, now at Vanke Group)
• Dr Yuthdanai Petchdemaneengam (graduated in 2012, now at Braemar Technical Services Offshore, Singapore)
• Dr Sufen Zhang (graduated in 2012, now at Sigma-Builder, Singapore)
• Dr Zhuo Chen (graduated in 2010, now at Seatrium, Singapore)

Master students

• Miss Jiajia Xu

Visiting Faculties

• Wanzhen Wang, Professor, School of Civil and Environmental Engineering, Ningbo University
• Xiaogui Wang, Professor, Department of Mechanical Engineering, Zhejiang University of Technology
• Liping Tang, Lecturer, Department of Mechanical Engineering, Southwest Petroleum University, China
• Weiji Liu, Department of Mechanical Engineering, Southwest Petroleum University, China
• Ming Li, Associate Professor, Department of Material Engineering, Southwest Petroleum University, China
• Dr. Jianfeng Chen, Associate Professor, Department of Civil Engineering, Chang’An University.

Visiting PhD Students

• Zhe-Xi Zhang, visiting PhD student from Tianjin University, 2023-2024
• Zhe Wang, visiting PhD student from Tianjin University, 2023-2024
• Ercong Kang, visiting PhD student from Tianjin University, 2021-2022
• Zezhong Wei, visiting PhD student from Southeast University, 2021-2022
• Wei Cai, visiting PhD student from Wuhan University of Technology, 2020-2021
• Youzhu Lin, visiting PhD student from Harbin Institute of Technology, 2020-2021
• Guangwei He, visiting PhD student from Harbin Institute of Technology, 2020-2021
• Minge Duan, visiting PhD student from Northwestern Polytechnical University, 2020-2021
• Wenxin Dong, visiting PhD student from Southwest Petroleum University, 2019-2021
• Shaojun Cao, visiting PhD student from Harbin Institute of Technology, 2019-2020
• Junhong Liu, visiting PhD student from Central South University, China, 2019-2020
• Shiyun Shi, visiting PhD student from Wuhan University of Technology, 2017-2018
• Xiaowei Liao, visiting PhD student from Tsinghua University, 2017

Selected Publications

Recent Articles in Journals (over the past 5 years)

1.  Wang, L. and Qian, X. (2024). Optimization‐improved thermal-mechanical simulation of welding residual stresses in welded connections, Computer-Aided Civil and Infrastructure Engineering, 2024;1-19.
2. Wang, L. and Qian, X. (2024).  Effects of pre-tension and fatigue loadings on the evolution of welding residual stresses in welded plates, Engineering Structures, 301:117272.
3. Liu, T., Qian, X., Wang, W. and Chen Y. (2024). Resistance and Strain during Tearing for Tubular Joints under Reversed Axial Actions. Journal of Constructional Steel and Research, 213:108328.
4. Zhen, N. and Qian, X. (2024). A Damage Mechanics Based Random-aggregate Mesoscale Model for Concrete Fracture and Size Effect Analysis. Computers and Concrete, 33(2):147-163..
5. Cheok E W W, Qian X., Chen C, Quek S T, Si M B I. (2024) A local digital twin approach for identifying, locating and sizing cracks in CHS X-joints subjected to brace axial loading. Engineering Structures, 299, 117085
6. Chen, C. and Qian, X. (2023). Measuring J-R curve under dynamic loading conditions using digital image correlation. Fatigue and Fracture of Engineering Materials and Structures, 46(10: 3892-3911
7. Feng, L., and Qian, X. (2023), Enhanced real-time crack monitoring and updating in welded structural components with limited measurement data. Mechanical Systems and Signal Processing, 198, 110403.
8. Xie J., Kang, E.C., Qian, X. and Yan J.B. (2023). Static compressive stress-strain behaviours of normal weight concrete at Arctic low temperatures. Construction and Building Materials, 384, 131474.
9. Cai, W., Zhou, Z., Qian, X., Cao, D., Li, S., Zhu, L. and Hu, H. (2023). Numerical Study on Ductile Failure Behaviours of Steel Structures under Quasi-Static Punch Loading. Journal of Marine Science and Engineering, 11 (6), 1197
10. Liu, T.Y., Qian, X., Wang, W. and Chen Y. (2023). A ductile tearing assessment diagram for cracked circular-hollow-section joints under reversed loadings. Marine Structures, 89, 103394.
11. Li, X., Wong, V-K., Yousry, Y.M. Lim, D. B. K., Subhodayam, P. T. C., Yao, K., Feng, L., Qian, X., Fan, Z. Surface Crack Monitoring by Rayleigh Waves with a Piezoelectric-Polymer-Film Ultrasonic Transducer Array, Sensors, 23(5),2665.
12. Chen, C., and Qian, X.  A non-contact approach to measuring JR curve for side-grooved specimens using digital image correlation. Theoretical and Applied Fracture Mechanics, 121, 103549.
13. Li, P.Y., Ma, Y.E., Sun, W.B., Qian, X., Zhang, W. and Wang, Z.H. (2022). Mechanical behaviours and failure modes of additive manufactured Ti6Al4V lattice structures under compressive load. Thin-Walled Structures, 108, 109778.
14. Wang, L. and Qian, X. (2022) Welding residual stresses and their relaxation under cyclic loading in welded S550 steel plates. International Journal of Fatigue, 162, 106992.
15. Wei, X., Pei, X., Qian, X., Xing, S., Feng, L. and Jin, H. (2022) Traction stress-based fatigue failure mode identification of load-carrying welded cruciform joints. International Journal of Fatigue, 161, 106897.
16. Feng, L., Liu, T., Qian, X. and Chen, C. (2022) A complete integrity assessment of welded connections under high and low cycle fatigue followed by fracture failure. Steel and Composite Structures, 43, 465-481.
17. Chen, C. and Qian, X. (2022) Quantifying through-thickness J for plane strain specimens using digital image correlation considering constraint effects. Engineering Fracture Mechanics, 267, 108430.
18. Wei, C., Zhu, L. and Qian, X. (2022). Dynamic responses of steel plates under repeated ice impacts. International Journal of Impact Engineering, 162, 104129.
19. Feng, L. and Qian, X. (2022) An adaptive learning approach to determine and update crack sizes from strain relaxation data for welded plate joints. Engineering Fracture Mechanics, 259, 108165.
20. Liu, T., Qian, X., Wang, W. and Chen, Y.Y. (2021) A ductile tearing assessment diagram to estimate load resistance versus crack extension for welded connections with surface cracks, Thin-Walled Structures, 169:108435.
21. Sun, W., Ma, Y.E., Zhang W, Qian, X., Huang, W., Wang, Z. (2021).  Effects of the Build Direction on Mechanical Performance of Laser Powder Bed Fusion Additively Manufactured Ti6Al4V under Different Loadings. Advanced Engineering Materials, 2100611
22. Seah, T.T., Qian, X. and Zhang Y. (2021) Constraint-based failure assessment for pipelines with coplanar circumferential cracks under biaxial loading. International Journal of Pressure Vessels and Piping, 190,104320.
23. Li, P., Ma, Y.E., Sun, W., Qian, X., Zhang, W. and Wang Z. (2021). Fracture and failure behaviour of additive manufactured Ti6Al4V lattice structures under compressive load. Engineering Fracture Mechanics, 244:107537.
24. Feng, L. and Qian, X. (2021). A uniform volume-based fatigue indicator for high-and low-cycle assessment of notched components. International Journal of Fatigue, 144, 106048.
25. Feng, L., and Qian, X. (2020). Enhanced sizing for surface cracks in welded tubular joints using ultrasonic phased array and image processing. NDT & E International, 116, 102334.
26. Guo, Y., Ma, Y., Zhang, X., Qian, X. and Li, J. (2020) Study on residual stress distribution of 2024-T3 and 7075-T6 aluminium dissimilar friction stir welded joints. Engineering Failure Analysis, 118, 104911.
27. Feng, L., and Qian, X. (2020). Enhanced crack sizing and life estimation for welded tubular joints under low cycle actions. International Journal of Fatigue, 137, 105670.
28. Liu, T., Qian, X., Wang, W. and Chen, Y. (2020). A reversed η approach to estimate load-deformation curves for fracture specimens and surface-cracked pipes. Theoretical and Applied Fracture Mechanics, 106, 102485.
29. Huang, Z., Zhang, W., Qian, X., Su, Z., Pham, D-C., Sridhar, N. (2020). Fatigue behaviour and life prediction of filament wound CFRP pipes based on coupon tests. Marine Structures, 72, 102756.
30. Zhang, W., Huang, Z., Fu, Z., Qian, X., Zhou Y. and Sui L. (2020). Shear resistance behaviour of partially composite Steel-Concrete-Steel sandwich beams considering bond-slip effect. Engineering Structures, 210, 110394.
31. Feng, L. and Qian, X. (2019). Rapid S-N type life estimation for low cycle fatigue of high-strength steels at a low ambient. Steel and Composite Structures, 33(6), 777-792.
32. Huang, Z., Qian, X., Su, Z., Pham, D.-C. and Sridhar, N. (2020). Experimental investigation and damage simulation of large-scaled filament wound composite pipes. Composites Part B: Engineering, 184, 107639.
33. Pradana, M. R. and Qian, X. (2020). Bridging local parameters with global mechanical properties in bonded discrete elements for ice load prediction on conical structures. Cold Regions Science and Technology, 173, 102960.
34. Dai, J., Zhang, C., Lim, H. V., Ang, K. K., Qian, X., Wong, J. L. H., Tan, S. T. and Wang C. L. (2020) Design and construction of a floating modular photovoltaic system for water reservoirs. Energy, 191, 116549.
35. Sun, W., Ma, Y., Huang, W., Zhang, W. and Qian, X. (2020) Effects of build direction on tensile and fatigue performance of selective laser melting Ti6Al4V titanium alloy. International Journal of Fatigue, 130, 105260.
36. Zhang, W., Huang, Z. Fu, Z., Qian, X., Zhou, Y. and Sui, L.L. Shear resistance behaviour of partially composite Steel-Concrete-Steel sandwich beams considering bond-slip effect. Engineering Structures, 210, 110394.
37. Pradana, M. R., Qian, X. and Ahmed, A. (2019). Efficient discrete element simulation of managed ice actions on moored floating platforms. Ocean Engineering, 190, 106483.
38. Wang, J., Wang, X. and Qian, X. (2019). Progressive collapse simulation of the steel-concrete composite floor system considering ductile fracture of steel. Engineering Structures, 200, 109701.
39. Ma, X., Chen Y., Wang, W. and Qian, X. (2019) Weld fracture under non-uniform stress distribution and its mechanism in CHS-CHS X-joints. Journal of Constructional Steel Research, 162, 105740.
40. Liu, T. Y., Qian, X., Wang, W. and Chen, Y. Y. (2019). A node release approach to estimate the J-R curve for single-edge-notched tension specimen under reversed loading. Fatigue & Fracture of Engineering Materials & Structures, 42(7), 1595-1608.
41. Liu, T. Y., Qian, X., Wang, W. and Chen, Y. Y. (2019). Fracture resistance curve for single-edge notched tension specimens under low cycle actions. Engineering Fracture Mechanics, 211, 47-60.
42. Liu, W. J., Qian, X., Li, T., Zhou, Y. L. and Zhu X. H. (2019) Investigation of the tool-rock interaction using Drucker-Prager failure criterion. Journal of Petroleum Science and Engineering, 173, 269-278.