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Evolution and interaction of damage modes in fabric-reinforced composites under dynamic flexural loading

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posted on 04.03.2014, 15:32 authored by Himayat Ullah, Andy HarlandAndy Harland, Vadim SilberschmidtVadim Silberschmidt
In this paper, an experimental study is performed to characterise the behaviour of fabric-reinforced composites used in sports products under large-deflection bending in Izod-type impact tests. X-ray micro computed tomography (micro-CT) is used to investigate various damage modes in the impacted CFRP specimens. It revealed that matrix cracking, delaminations, tow debonding, and fibre fracture were the prominent damage modes. Three-dimensional finite-element models are developed to study the onset, progression and interaction of some damage modes such as delamination and fabric fracture observed with micro-CT. A damage modelling technique based on a cohesive-zone method, which is more efficient than continuum damage mechanics approach, is proposed for analysis of interaction of damage modes. The developed numerical models are capable to simulate the damage mechanisms and their interaction observed in the tests. In this study, the pattern of damage formation observed in specimens was front-to-back, unlike bottom-to-top one in drop weight impact tests. The effect of boundary conditions on the dynamic response and damage evolution of composite laminates is also investigated. © 2013 Elsevier Ltd.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Composites Science and Technology

Volume

92

Pages

55 - 63

Citation

ULLAH, H., HARLAND, A.R. and SILBERSCHMIDT, V.V., 2014. Evolution and interaction of damage modes in fabric-reinforced composites under dynamic flexural loading. Composites Science and Technology, 92, pp. 55 - 63

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Acceptance date

10/12/2013

Publication date

2013-12-22

Notes

This article was published in the journal, Composites Science and Technology [© Elsevier]. The definitive version is available at: http://dx.doi.org/10.1016/j.compscitech.2013.12.007

ISSN

0266-3538

Language

en