Dr Xiaodong Xu Xiaodong.Xu@uwe.ac.uk
Senior Lecturer in Engineering Principles
An experimental study of scaling effects in notched quasi-isotropic carbon/epoxy laminates under compressive loads
Xu, Xiaodong; Paul, Aakash; Sun, Xiaoyang; Wisnom, Michael R.
Authors
Aakash Paul
Xiaoyang Sun
Michael R. Wisnom
Abstract
The size effects in centre-notched quasi-isotropic carbon/epoxy laminates under compression were investigated. The in-plane dimensions of the baseline specimen were scaled up by a factor of up to 14. The centre-notched specimens were compared to open-hole specimens of the same dimensions. It was found that compressive strength of the small centre-notched specimen is similar to that of the open-hole specimen. However, as the in-plane dimensions increase, the centre notches are weaker than the open holes, and start to follow a Linear Elastic Fracture Mechanics (LEFM) scaling line. These trends were well captured by a Composite Compressive Strength Modeller (CCSM) using the fracture toughness measured in the current study. Fibre micro-buckling was confirmed to be the dominant failure mechanism under compression. The failure mechanisms under compression were also compared against those under tension. Matrix splitting under compression was observed through X-ray Computed Tomography but was less extensive than under tensile loading.
Citation
Xu, X., Paul, A., Sun, X., & Wisnom, M. R. (2020). An experimental study of scaling effects in notched quasi-isotropic carbon/epoxy laminates under compressive loads. Composites Part A: Applied Science and Manufacturing, 137, https://doi.org/10.1016/j.compositesa.2020.106029
Journal Article Type | Article |
---|---|
Acceptance Date | Jun 23, 2020 |
Online Publication Date | Jul 2, 2020 |
Publication Date | Oct 1, 2020 |
Deposit Date | Feb 15, 2021 |
Publicly Available Date | Jul 3, 2021 |
Journal | Composites Part A: Applied Science and Manufacturing |
Print ISSN | 1359-835X |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 137 |
Article Number | 106029 |
DOI | https://doi.org/10.1016/j.compositesa.2020.106029 |
Keywords | Mechanics of Materials; Ceramics and Composites |
Public URL | https://uwe-repository.worktribe.com/output/7094439 |
Additional Information | This article is maintained by: Elsevier; Article Title: An experimental study of scaling effects in notched quasi-isotropic carbon/epoxy laminates under compressive loads; Journal Title: Composites Part A: Applied Science and Manufacturing; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.compositesa.2020.106029; Content Type: article; Copyright: © 2020 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.2020.106029.
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