Dr Xiaodong Xu Xiaodong.Xu@uwe.ac.uk
Senior Lecturer in Engineering Principles
Unification of strength scaling between unidirectional, quasi-isotropic, and notched carbon/epoxy laminates
Xu, Xiaodong; Wisnom, Michael R.; Chang, Kuan; Hallett, Stephen R.
Authors
Michael R. Wisnom
Kuan Chang
Stephen R. Hallett
Abstract
An investigation into size effects and notch sensitivity in quasi-isotropic carbon/epoxy laminates was carried out. The purpose is to draw a complete picture of the strength scaling in unidirectional, quasi-isotropic, and notched carbon/epoxy laminates. A link was established between the strength scaling of the unidirectional and quasi-isotropic laminates. Efforts were made to understand the relationship between unnotched and open-hole strengths. For very small holes, the notched strengths approach the unnotched strength limit. A scaling law based on Weibull statistics was used to predict the unnotched laminate strengths. For very large holes, the same scaling law in conjunction with a detailed 3D ply-by-ply FE analysis with matrix cracks in the 90° plies and delamination cohesive interface elements was used to predict the large notched strengths. A good agreement between the modelling and experimental results was achieved. The effects of 90° matrix cracks on unnotched and notched strengths were also studied.
Citation
Xu, X., Wisnom, M. R., Chang, K., & Hallett, S. R. (2016). Unification of strength scaling between unidirectional, quasi-isotropic, and notched carbon/epoxy laminates. Composites Part A: Applied Science and Manufacturing, 90, 296-305. https://doi.org/10.1016/j.compositesa.2016.07.019
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 22, 2016 |
Online Publication Date | Jul 25, 2016 |
Publication Date | Nov 1, 2016 |
Deposit Date | Feb 15, 2021 |
Publicly Available Date | Feb 17, 2021 |
Journal | Composites Part A: Applied Science and Manufacturing |
Print ISSN | 1359-835X |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 90 |
Pages | 296-305 |
DOI | https://doi.org/10.1016/j.compositesa.2016.07.019 |
Keywords | A. Laminates; B. Strength; B. Stress concentrations; Scaling |
Public URL | https://uwe-repository.worktribe.com/output/7094482 |
Additional Information | This article is maintained by: Elsevier; Article Title: Unification of strength scaling between unidirectional, quasi-isotropic, and notched carbon/epoxy laminates; Journal Title: Composites Part A: Applied Science and Manufacturing; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.compositesa.2016.07.019; Content Type: article; Copyright: © 2016 Elsevier Ltd. All rights reserved. |
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Copyright Statement
This is the author's accepted manuscript. The final published version is available here: https://doi.org/10.1016/j.compositesa.2016.07.019
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