Qian Xudong

Dr QIAN Xudong is currently an Associate Professor in the Department of Civil and Environmental Engineering. His research work is mainly on the offshore structural engineering, with particular emphasis on the following three aspects: nonlinear analysis of steel offshore platforms, cleavage fracture for ferritic steels in the ductile-to-brittle transition regime, and fatigue and fracture assessments for critical structural components. He is currently serving as the Director for Centre of Advanced Materials and Structures.

Teaching Areas

• Structural mechanics and mechanics of materials
• Fatigue and fracture of offshore structures
• Computer aided design/graphics
• Structural analysis
• Structural steel design

Research Areas

• Fatigue and fracture in large-scale offshore structures
• Cleavage fracture
• Mixed-mode fracture
• Steel-concrete composite structures

Education

• National University of Singapore (1996 — 2000)

Companies

• Director Centre for Advanced Materials and Structures, National University of Singapore (2016)
• Associate Professor National University of Singapore (2014)
• Assistant Professor National University of Singapore (2007 — 2013)
• Post-doctoral Research Associate University of Illinois at Urbana-Champaign (2006 — 2007)

Honours & Awards

• Offshore Mechanics Scholarship, International Society of Offshore and Polar Engineers, 2002

Selected Publications

Recent Articles in Journals (over the past 5 years)

• Zhang, Z. and Qian, X. (2016). Effect of Experimental Sample Size on Local Weibull Assessment of Cleavage Fracture for Steel. Fatigue and Fracture of Engineering Materials and Structures, Accepted for publication.
• Cao, H., Qian, X., Chen, Z. and Zhu, H. (2016). An Enhanced Particle Swarm Optimization for Size and Shape Optimization of Truss Structures. Engineering Optimization, Accepted for publication.
• Wang, Y., Qian, X., Liew, J.Y.R. and Zhang, M.-H. (2016). A Numerical and Theoretical Investigation on Composite Pipe-in-Pipe Structure under Impact. Steel and Composite Structures, Accepted for publication.
• Zhang, Z. and Qian, X. (2016). A local approach to estimate cleavage angles in steel under mixed-mode I and II conditions. Engineering Fracture Mechanics, 166, 164-181.
• Pradana, M. R., Qian, X. and Swaddiwudhipong, S. (2016). An extrapolation method to determine the effective notch stress in circular hollow section X-joints. Fatigue and Fracture of Engineering Materials and Structures, in press.
• Justnes, H., Kim, M. O., Ng, S. and Qian, X. (2016). Methodology of Calculating Required Chloride Diffusion Coefficient for Intended Service Life as Function of Concrete Cover in Reinforced Marine Structures. Cement and Concrete Composites, 73, 316-323.
• Gu, B., Qian, X. and Ahmed, A. (2016). A Toughness Based Deformation Limit for X- and K-joints under Brace Axial Tension. Frontiers in Structural and Civil Engineering, 10, 345-362.
• Yan, J., Xiong, M-X., Qian, X. and Liew, J. Y. R. (2016). Numerical and parametric study of curved steel-concrete-steel sandwich composite beams under concentrated loading. Materials and Structures, 49, 3981-4001.
• Chen, S., Qian, X. and Ahmed, A. (2016). Cleavage fracture assessment for surface-cracked plate fabricated from high strength steels. Engineering Fracture Mechanics, 161, 1-20.
• Yan, J., Qian, X., Liew, J.Y.R. and Liang, Z. (2016). Damage plasticity based numerical analysis on steel–concrete–steel sandwich shells used in the Arctic offshore structure. Engineering Structures, 117, 542-559.
• Yan, J., Wang, J.Y., Liew, J.Y.R. and Qian, X. (2016). Application of ultra-lightweight cement composite in flat slabs and double skin composite structures. Construction and Building Materials, 111, 774-793.
• Yan, J., Wang, J.Y., Liew, J.Y.R. and Qian, X. (2016). Reinforced ultra-lightweight cement composite flat slabs: Experiments and analysis, Materials and Design, 95, 148-158.
• Yan, J., Wang, J.Y., Liew, J.Y.R., Qian, X. and Li, Z. (2016) Punching Shear Behavior of Steel-Concrete-Steel Sandwich Composite Plate under Patch Loads. Journal of Constructional Steel Research, 121, 50-64.
• Yan, J., Wang, J., Liew, J.Y.R., Qian, X. and Zong, L. (2016). Ultimate strength behaviour of steel–concrete–steel sandwich plate under concentrated loads. Ocean Engineering, 118, 41-57.
• Pham, D. C., Sridhar, N., Qian, X., Sobey, A., Achintha, M. and Shenoi, A. (2016). A review on design, manufacture and mechanics of composite risers. Ocean Engineering, 112, 82-96.
• Yan, J., Liu, X, Liew, J. Y. R., Qian, X. and Zhang, M-H. (2016). Steel-concrete-steel sandwich system in Arctic offshore structures: materials, experiments and design. Materials and Design, 91, 111-121.
• Yan, J., Liew, J. Y. R., Qian, X. and Wang, J. (2015). Ultimate strength behavior of curved steel-concrete-steel sandwich composite beams. Journal of Constructional Steel Research, 115, 316-328.
• Ma, X., Wang, W., Chen, Y. Y. and Qian, X. (2015). Simulation of ductile fracture in tubular connections using a damage plasticity model. Journal of Constructional Steel Research, 114, 217-236.
• Pradana, M. R., Qian, X. and Swaddiwudhipong, S. (2015). An extrapolation method to determine the effective notch stress in welded joints. Fatigue & Fracture of Engineering Materials & Structures, 38, 1118-1135.
• Qian, X. and Zhang, Y. (2015). Translating the material fracture resistance into representations in welded tubular structures. Engineering Fracture Mechanics, 147, 278-292.
• Ahmed, A and Qian, X. (2015). A deformation limit based on failure assessment diagram for fatigue cracked X-joints under in-plane bending. Ships and Offshore Structure, 11, 182-197.
• Wang, Y., Qian, X., Liew, J. Y. R., and Zhang, M.-H. (2015). A load-deformation formulation for cement composite filled pipe-in-pipe structures. Engineering Structures, 92, 84-100.
• Wang, Y., Qian, X., Liew, J. Y. R., and Zhang, M.-H. (2015). Impact of cement composite filled steel tubes: an experimental, numerical and theoretical treatise. Thin-Walled Structures, 87, 76-88.
• Ahmed, A. and Qian, X. (2015). A toughness based deformation limit for fatigue-cracked X-joints under in-plane bending. Marine Structures, 42, 33-52.
• Wang, Y., Qian, X., Liew, R. J. Y. and Zhang, M.-H. (2014). Experimental behavior of cement filled pipe-in-pipe composite structures under transverse impact. International Journal of Impact Engineering, 72, 1-16.
• Wang, W., Qian, X. and Yang, B. (2014). Fracture in concrete-filled square hollow section to H-section joints under low-cycle reversed loading. Journal of Constructional Steel Research, 101, 363-372.
• Qian, X., Jitpairod, K., Marshall, P.W., Swaddiwudhipong, S., Ou, Z., Zhang, Y. and Pradana, M. R. (2014). Fatigue and residual strength of concrete-filled tubular X-joints with full capacity welds. Journal of Constructional Steel Research, 100, 21-35.
• Qian, X. and Chen, S. (2014). A K0-based calibration procedure for the Weibull stress cleavage model. Fatigue & Fracture of Engineering Materials & Structures, 37, 391-405.
• Qian, X., Zhang, S., Swaddiwudhipong, S. and Shen, L. (2014). Temperature dependence of material length scale for strain gradient plasticity and its effect on near-tip opening displacement. Fatigue & Fracture of Engineering Materials & Structures, 37, 157-170.
• Qian, X., Ou, Z., Swaddiwudhipong, S. and Marshall, P.W. (2013). Brittle failure caused by lamellar splitting in a large-scale tubular joint with fatigue cracks. Marine Structures, 34,185-204.
• Qian, X., Petchdemaneengam, Y., Swaddiwudhipong, S., Marshall, P.W., Ou, Z. (2013). Fatigue performance of tubular X-joints with PJP+ welds: I – experimental study. Journal of Constructional Steel Research, 90, 49-59.
• Qian, X., Nguyen, C.T., Petchdemaneengam, Y., Swaddiwudhipong, S., Ou, Z. and Marshall, P.W. (2013). Fatigue performance of tubular X-joints with PJP+ welds: II – numerical investigation. Journal of Constructional Steel Research, 89, 252-261.
• Qian, X. and Li, Y. (2013). A compliance-based approach to measure fracture resistance curve for surface cracked steel plate. International Journal of Fracture, 182, 1-19.
• Marshall, P. W., Qian, X., Nguyen, C. T. and Petchdemaneengam, Y. (2013). Welder-optimized complete joint penetration-equivalent welds for tubular connections. Welding in the World, 57, 569-579.
• Qian, X., Li, Y. and Ou, Z. (2013). Ductile tearing assessment of high-strength steel X-joints under in-plane bending. Engineering Failure Analysis, 28, 176-191.
• Qian, X., Zhang, Y. and Choo, Y. S. (2013). A load-deformation formulation for CHS X- and K-joints in push-over analyses. Journal of Constructional Steel Research, 90, 108-119.
• Zhang, Y. and Qian, X. (2013). An eta-approach to evaluate the elastic-plastic energy release rate for weld-toe cracks in tubular K-joints. Engineering Structures, 51, 88-98.
• Qian, X. (2013). Failure assessment diagrams for circular hollow section X- and K-joints. International Journal of Pressure Vessels and Piping, 104, 43-56.
• Qian, X. Swaddiwudhipong, S., Nguyen, C.T., Petchdemaneengam, Y., Marshall, P.W. and Ou, Z. (2013). Overload effect on the fatigue crack propagation in large-scale tubular joints. Fatigue & Fracture of Engineering Materials & Structures. 36, 427-438.
• Qian, X., Zhang, Y. and Choo, Y.S. (2013). A load-deformation formulation with fracture representation based on the J-R curve for tubular joints. Engineering Failure Analysis, 33, 347-366.
• Yang, W. and Qian, X. (2012). Fracture resistance curve over the complete mixed-mode I and II range for 5083 aluminum alloy. Engineering Fracture Mechanics. 96, 209-225.
• Qian, X. and Yang, W. (2012). The initiation of ductile fracture in mixed-mode I and II aluminum alloy specimens. Engineering Fracture Mechanics. 93, 189-203.