Estimation of axial compressive strength of unidirectional carbon fiber-reinforced plastic considering the variability of fiber misalignment
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Accepted version
Author(s)
Ueda, M
Suzuki, Y
Pinho, ST
Type
Journal Article
Abstract
The analytical method to calculate the axial compressive stress–strain relation of a unidirectional carbon fiber-reinforced plastic (UD CFRP) was presented considering the variability of the fiber misalignment angle. Because the compressive load-bearing capability of fibers surrounded by a matrix was different depending on the fiber misalignment angle, fibers were grouped based on the misalignment angle. The contribution to the load bearing was calculated and summed based on the area ratio of the fiber groups. All fibers supported a compressive load in the initial loading. However, with increased loading, the load-bearing capabilities of the different fiber groups decreased more dramatically with greater misalignment angles. The fibers with a misalignment angle of 0.5° showed a large load drop after their maximum loading, which triggered the ultimate failure. The variability of the fiber misalignment angle was indispensable to determining the axial compressive strength under the assumption of zero mean fiber misalignment angle.
Date Issued
2023-12
Date Acceptance
2023-10-04
ISSN
1359-835X
Publisher
Elsevier
Journal / Book Title
Composites Part A: Applied Science and Manufacturing
Volume
175
Copyright Statement
Copyright © Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
http://dx.doi.org/10.1016/j.compositesa.2023.107821
Publication Status
Published
Article Number
107821
Date Publish Online
2023-10-05