Keynote Speakers

The Keynote & Plenary Speakers information of ICSMR 

Prof. TAY Tong-Earn

National University of Singapore, Singapore

Biography: T.E. (Tong-Earn) Tay is Professor at the Department of Mechanical Engineering, National University of Singapore (NUS). He has a PhD in Solid Mechanics from the University of Melbourne, Australia. He was formerly Head of Department of Dept of Mechanical Engineering, NUS, from 2011 to 2015, and Vice-Dean for Research for Faculty of Engineering, NUS, from 2009 to 2011. His current research interests are in progressive damage, failure, fracture, delamination, impact, and adaptive multi-fidelity and multi-scale computational analysis of fiber-reinforced composite materials and structures. He is a Regional Editor (Asia and Oceania) for the Journal of Composite Materials, an Associate Editor for the Journal of Reinforced Plastics & Composites, and editorial board member of the International Journal of Damage Mechanics, Applied Composite Materials, Multiscale and Multidisciplinary Modeling Experiment and Design, and Journal of Multiscale Modeling. He is a recipient of JEC Life Achievement Award, a registered Professional Engineer (PE), Chartered Engineer (CEng), Founding Fellow of the Singapore Academy of Engineering (FSAE) and Council Member of the Asian-Australasian Association for Composite Materials.

Speech Title: Discrete Crack Models for Static, Impact and Fatigue Damage in Composite Structures 

Abstract: In this presentation, multi-fidelity modeling and prediction of progressive damage and failure of notched fiber-reinforced laminates will be discussed. At the sub-laminate continuum scale, the primary mechanisms of progressive damage are matrix and fiber-matrix micro-cracks, delamination and fiber breakage with strong inter-mechanistic interactions. Early developments focused on material stiffness degradation, later also known as smeared crack models, because they are intuitive and easy to implement. Unfortunately, when applied within the finite element framework, the results are found to be mesh dependent. Later developments of cohesive zone and discrete crack models enabled the integration of these damage mechanisms into high-fidelity models with minimal sacrifice to the physics of interactions, although they generally incur high computational costs. Recent adaptive combinations of high and lower fidelity methods are shown to improve efficiency. This presentation outlines key developments and examples in the author’s work, from smeared crack modeling, discrete crack modeling, fracture and strength characterization, explicit versus implicit finite element implementations, adaptive multi-fidelity modeling, and the potential to separately model non-linear contributions due to the evolution of cracks, material plasticity and local fiber realignments in thermoplastic composites. Recently, discrete crack models have been successfully applied to metal-composite riveted joints and fatigue analysis of quasi-isotropic (QI) and double-double (DD) laminates with experimental validations and further shedding light on competing failure mechanisms.