Session 16. Failure Criteria and Verification

Organizers

Zhejiang University; Chinese Society for Composite Materials

Executive Organizers

Tongji University; Peking university; Royal Melbourne Institute of Technology

Session Information and Topics

Two steps are necessary to estimate a composite failure. One is to evaluate the stresses sustained by the composite or by the constituents of the composite and the other to apply a failure criterion to detect the evaluated stresses against the ultimate parameters of the composite or the constituents of the composite. The session will focus on topics relevant to the both step advancements through detecting on any kind of composite failures, including interface debonding, interlaminar fracture or delamination, fiber fracture, kinking or splitting dominated composite failure, matrix failure dominated composite failure, ultimate failure of a laminate, and ultimate failure of a composite structure. The composite types can be continuous fiber, short fiber and particle composites as well as nanocomposites. Determination of the ultimate parameters for a failure criterion is also an important topic.

Session Chairs

Prof. Zhengming HUANG 黄争鸣, Tongji University

Prof. Jiangxiang WANG 王建祥, Peking University

Prof. Raj Das，Royal Melbourne Institute of Technology

Zhengming HUANG 黄争鸣

Biography

Huang obtained MS degree in solid mechanics and PhD in materials engineering. He was awarded a Changjiang Scholar Professor by the Ministry of Education of China in 2002, and is a distinguished professor at the School of Aerospace Engineering & Applied Mechanics, Tongji University, China. His researches cover most aspects in mechanics of composites. The four theories are attributed to him. First is his analytical elasto-plastic constitutive theory—Bridging Model for composites reinforced with continuous fibers, short fibers or particles. Second is his true stress theory. A stress of continuum media at a point is defined by an averaged quantity of those on an infinitesimal element containing the point. Such an element for a composite cannot be infinitesimal since both the fiber and matrix must be contained in it. He has obtained explicit formulae for evaluating all the fiber and matrix true stresses under arbitrary loads, based on which any composite failure can be assessed by detecting the fiber and matrix failures against their ultimate parameters measured independently. Third is his interlaminar matrix stress modification method, with which an interlaminar fracture or delamination of any laminated structure can be predicted with no iteration and with the inputs all measured independently and following standards. Fourth is his incremental constitutive model for a rubber-like material, with which the stress-strain curve up to failure under any type of loads can all be well simulated using the experimental data from only one type load.

Jiangxiang WANG王建祥

Biography

Jianxiang Wang received his BEng from Nanjing University of Aeronautics and Astronautics in 1983, MSc from South China University of Technology in 1986, and PhD from The University of Sydney in 1995. He did post-doctoral research in Imperial College in 1996 and Aalborg University in 1997, and joined Peking University in 1998. Jianxiang Wang’s research interests cover fracture/failure analyses of composite materials, constitutive relations and transport properties of heterogeneous materials, surface effects in heterogeneous materials and nanomaterials, and generalized continuum mechanics. He served as secretary-general of the Chinese Society of Theoretical and Applied Mechanics (2006-2010), secretary-general the 23^rd International Congress of Theoretical and Applied Mechanics (ICTAM2012) of the International Union of Theoretical and Applied Mechanics (IUTAM), and member of Congress Committee of the IUTAM (2014-2022). Jianxiang Wang was once awarded Excellent Teacher of Beijing (2009), Changjiang Scholar Professor (2008), Honorary Visiting Professor of Cardiff University (2006-2016), the National Outstanding Youth Science Fund (2005), and the Royal Society Visiting Fellowship (1999, 2004).

Prof. Raj Das

Biography 

Prof Raj Das is the Full Professor of Applied Mechanics and leads the ‘Simulation of Advanced Materials and Structures (SAMS)’ research group in the ‘Sir Lawrence Wackett Defence and Aerospace Centre’ of RMIT University (Australia). He is the ‘Program Director’ in the Aerospace Engineering and Aviation discipline of the School of Engineering. He is also an honorary academic in the University of Auckland, New Zealand and the University of Quebec, Canada. Prof Das has nearly 20 years of experience in the design, analysis and optimisation of engineering materials and structures with a focus on computational mechanics, structural optimisation, composite structures, failure analysis, and damage tolerance design. Prof Das has published more than 300 papers in international journals and conferences in collaboration with several universities, institutes and industries. Prof Das has a PhD from Monash University, Australia in Applied Mechanics, and has previously worked in the University of Auckland (New Zealand), the Commonwealth Scientific and Industrial Research Organisation (Australia), and the University of Manchester (UK).

Session Program

The organizers will make the best effort to ensure the high quality of the session by inviting excellent invited speakers. Some contributed oral talks are encouraged. Kindly be aware that this is not the final version and the date/time of presentations may be slightly adjusted.