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A fracture mechanics analysis of the micromechanical events in finite thickness fibre push-out tests

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Title: A fracture mechanics analysis of the micromechanical events in finite thickness fibre push-out tests
Authors: Collard, B
Giuliani, F
Ingenbleek, G
Verbist, G
Dini, D
Item Type: Journal Article
Abstract: Understanding the micromechanical events of interfacial failure in fibre reinforced composites is vital to accurately characterising micromechanical properties and, consequently, the macroscopic properties of the composite. A fracture mechanics model of the fibre push-out test is developed, with an emphasis on the effect of sample thickness and residual stresses on the mechanisms of interfacial crack advancement. The model is applied to both a SiC-SiC ceramic matrix composite and a SiC-Ti metal matrix composite. The model demonstrates that previous assumptions about the micromechanical events of interfacial cracking are consistent with the measured values of interfacial fracture energy for ceramic matrix composites. Moreover, the model can identify the range of geometries for which different micromechanical cracking mechanisms occur simultaneously in a given material system. Identifying this range is important in choosing the sample geometry for fibre push-out testing because the interaction of advancing cracks affects the measurement of interfacial fracture energy by classical models.
Issue Date: 15-Jun-2022
Date of Acceptance: 7-Jun-2022
URI: http://hdl.handle.net/10044/1/97718
DOI: 10.1016/j.tafmec.2022.103441
ISSN: 0167-8442
Publisher: Elsevier BV
Start Page: 103441
End Page: 103441
Journal / Book Title: Theoretical and Applied Fracture Mechanics
Volume: 121
Copyright Statement: © 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
Sponsor/Funder: Shell Global Solutions International BV
Funder's Grant Number: PO 4550133349
Keywords: 0102 Applied Mathematics
0905 Civil Engineering
0913 Mechanical Engineering
Mechanical Engineering & Transports
Publication Status: Published
Article Number: 103441
Online Publication Date: 2022-06-15
Appears in Collections:Mechanical Engineering
Materials
Faculty of Natural Sciences



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