Development of fracture and damage modeling concepts for composite materials

Kakei, Ayad Arab Ghaidan and Epaarachchi, Jayantha Ananda and Islam, M. Mainul and Leng, Jinsong (2016) Development of fracture and damage modeling concepts for composite materials. In: Structural health monitoring technologies and next-generation smart composite structures. Composite Materials: Analysis and Design. Taylor & Francis (CRC Press), Roca Raton, USA, pp. 341-368. ISBN 978-1-4822-2691-1


An overview of proposed micro-crack based damage models for fibre reinforced composite plates is presented.
A critical analysis has been performed on the potential application of those models for damage accumulation analysis of wide range fibre reinforced composite materials. The flaws and drawbacks of those models were critically analysed and presented in the text. Interestingly, it has been found that some proposed models can be extended or modified to address unresolved issues in crack propagation and damage accumulation in fibre reinforced composites. It can be concluded that the micromechanical approach alone is not sufficient to evaluate complete damage accumulation of composite and a significant theoretical modifications are required for existing brittle damage models before applying them to fibre reinforced composite materials.
The goal of the current paper is an overview of the numerical approaches and approaches’ limitation of plate with multiply cracks problem. The used approaches is discussed and summarized. Equations for two or three dimensions of plate is given for studying effect of crack density on effective moduli. The insensitive effective moduli to the sizes, orientation and location of individual microcracks is also discussed. In addition, the problem associated with limitation of the exciting approaches with increasing cracks density conditions is summarized to approve that necessary modifications the numerical approach and corrections are required. Due to an increase interest in using a fracture mechanics based on microcracks numerical approaches to assess the damage of composite structures, the laminated composites selected as example. The micromechanics approach is not enough to evaluate damage and also most of current theoretical need modification for simulate real conditions.

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Item Type: Book Chapter (Commonwealth Reporting Category B)
Refereed: Yes
Item Status: Live Archive
Additional Information: c. 2016 Taylor & Francis (CRC Press).
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 08 May 2017 05:57
Last Modified: 25 May 2017 04:19
Uncontrolled Keywords: multiply cracks and crack density and effective moduli and numerical approaches and composite structures and transverse cracks
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation

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