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Chai Gin Boay


Chai Gin Boay
Associate Professor
Deputy Director of Protective Technology Research Centre
Tel: 6790 5756
Email: mgbchai@ntu.edu.sg
Office: N3-02c-88 
   
Education
  • PhD University of Strathclyde 1988
  • BSc(Hons) University of Strathclyde 1982

Biography
Dr Chai Gin Boay received his BSc (First Class honours) degree in Mechanical Engineering in 1982 and obtained his PhD degree in Mechanics of Materials majoring in the mechanics of composite structures in 1988 from the University of Strathclyde, UK. He has successfully obtained research funding from various sources in Singapore to conduct research work on structural analysis of sandwich composites and laminated structures. He is a consultant to several local companies on engineering problems. As both author and reviewer, he has contributed numerous technical papers to international journals and conferences. He is currently an Associate Editor of the Proceedings of the Institution of Mechanical Engineers, Part L, Journal of Materials : Design and Applications.

Research
  • Interest:
    Stress, Structural and Failure Analysis of Composites.
  • Projects:
    Life Prediction of Composites in Elevated Temperatures
    This detailed research programme has produced a set of procedures for life prediction of composites in elevated temperature. An extensive experimental programme is used in conjunction with a rigorous numerical model for life prediction of composite structures in elevated temperature environment. Progressive static and fatigue damage model is also incorporated into the numerical model for failure analysis. Testing infrastructures and a team of personnel at the university has also been coordinated to increase experimental and modelling efficiency.
    [Aerospace Structures Laboratory, Aerospace]
    Energy Absorption Characteristics of Composites Subject to Low Velocity Impact
    Three-dimensional finite element models were developed to simulate the indentation tests and impact events. Progressive damage constitutive models were developed to predict damage initiation and progression in the laminated composites, composite sandwich and fibre-metal laminates. Impact behaviour, including the impact response, damage initiation and evolution were investigated. The comparison of the numerical results with the extensive experimental results gave confidence in the use of the numerical models for practical composite structures.
    [Aerospace Structures Laboratory, Aerospace]

Research Staff and Students under supervision

PhD Student
Name Project
Ho Sing Kok Ninian The topological design and mechanical behaviour of metallic porous structures by additive manufacturing

Selected Publications
    • Chai G.B. and Manikandan P.*, 2014, Low velocity impact response of fibre-metal laminates - A review, Composites Structures (United Kingdom), Vol. 107, pp. 363-381.
    • Zhu Shengqing* and Chai G.B., 2013, Damage and failure mode maps of composite sandwich panel subjected to quasi-static indentation and low velocity impact, Composites Structures (United Kingdom), Vol. 101, pp. 204-214.
    • Satrio Wicaksono* and  Chai G.B., 2013, The Response of Woven CFRP under Static and Fatigue Loading, Advanced Materials Research, (Germany), Vol. 651, pp. 221-226.
    • Satrio Wicaksono* and  Chai G.B., 2013, A review of advances in fatigue and life prediction of fiber-reinforced composites, Proceedings of the Institution of Mechanical Engineers - Part L: Journal of Materials: Design and Applications, (United Kingdom), Vol. 227, No. 3, pp. 179-195.
    • Zhu Shengqing* and Chai G.B., 2012, Low-velocity impact response of fibre–metal laminates – Experimental and Theoretical, Composites Science and Technology (United Kingdom), Vol. 72, No.15, pp1793-1802.
    • Chai G.B. and Zhu Shengqing*, 2011, A Review of Low-velocity Impact on Sandwich Structures, Proceedings of the Institution of Mechanical Engineers - Part L: Journal of Materials: Design and Applications, (United Kingdom), Vol. 22 No.4, pp. 207-230.
    • Zhu Shengqing* and Chai G.B., 2011, Effect of Adhesive in Sandwich Panels Subjected to Low Velocity Impact, Proceedings of the Institution of Mechanical Engineers - Part L: Journal of Materials: Design and Applications, (United Kingdom), vol. 225 No. 3, pp. 171-181.
    • Foo Choon Chiang*, Seah L.K., Chai G.B., 2011, A modified energy-balance model to predict low-velocity, Composite Structures, (United Kingdom), Vol. 93, pp1385-1393.
    • Zhu Shengqing*, Chai G.B., 2010. Ductile and brittle material failures in low-velocity impact, Proceedings of the Institution of Mechanical Engineers - Part L: Journal of Materials: Design and Applications, Structures, (United Kingdom), Vol. 224 No. 4, pp162-172.
    • Chai G.B., Yap C.W.*, Lim T.M., 2010, Bending and Buckling of Generally Laminated Composite Beam-Column, Proceedings of the Institution of Mechanical Engineers - Part L: Journal of Materials: Design and Applications, (United Kingdom), Vol. 224 No. 1, pp1-7.
    • Chai G.B., 1995, Frequency Analysis of Rectangular Isotropic Plates Carrying a Concentrated Mass, International Journal of Computers and Structures (United Kingdom), Vol. 56, No. 1, pp 39 – 48.
    • Chai G.B., 1994, Buckling of generally laminated composite plates with various edge support conditions, Composite Structures (United Kingdom), Vol. 29, No. 3, pp 299 – 310.
    • Chai G.B., 1991, Large deflection of laminated composite plates, Composites Science and Technology (United Kingdom), Vol. 42, No. 4, pp 349 – 360.

    Teaching
    • Aerospace composite beams and their flexure behavious
    • Torsion of cylindrical shafts
    • Mechanics of Composite Materials
    • Mechanics of Materials
    • Aircraft Structures