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Lookup NU author(s): Professor Peter Gosling
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
© 2018 Elsevier Ltd This paper presents a methodology to evaluate the effects of microscopic manufacturing defects, namely fibre misalignment, waviness and volume fraction, on the mechanical performance. Influences of these defects on the effective elastic properties of composites are quantified by a dual homogenization method. For estimating stochastic characteristics of the properties induced by the variations in these defects, a probabilistic extension of the dual homogenization method is developed and numerically implemented through a perturbation-based stochastic finite element method. It is further incorporated in a multiscale finite element based reliability method to measure the influences of these manufacturing defects on structural performance in terms of reliability. The effectiveness of the proposed method in capturing defects is illustrated initially by investigating the effective elastic properties of a unidirectional fibre composite based yarn and then a plain woven textile composite. The capability of the proposed method in quantifying the variations in these defects is further demonstrated through statistical analysis of the effective elastic properties and a woven textile composite and structural reliability analysis of a textile composite laminate. This paper represents a significant advancement in the probabilistic prediction of the behaviour of woven and non-woven composites.
Author(s): Zhou X-Y, Gosling PD
Publication type: Article
Publication status: Published
Journal: Composite Structures
Year: 2018
Volume: 194
Pages: 226-239
Print publication date: 15/06/2018
Online publication date: 05/04/2018
Acceptance date: 02/04/2018
Date deposited: 11/06/2018
ISSN (print): 0263-8223
ISSN (electronic): 1879-1085
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.compstruct.2018.04.003
DOI: 10.1016/j.compstruct.2018.04.003
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