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High temperature interlaminar tensile strength of a SiCf/SiC ceramic matrix composite determined through diametrical compression testing up to 1200°C

Spencer Jeffs Orcid Logo, C.D. Newton, S. John, Martin Bache, L. Gale, S. Pattison, A.L. Chamberlain

Journal of the European Ceramic Society, Volume: 46, Issue: 2, Start page: 117811

Swansea University Authors: Spencer Jeffs Orcid Logo, Martin Bache

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DOI (Published version): 10.1016/j.jeurceramsoc.2025.117811

Abstract

The diametrical compression test method was used in this study to determine the high temperature interlaminar tensile strength of a SiCf/SiC Ceramic Matrix Composite. Two disk geometries are employed (Φ4.5 mm and Φ9 mm) with tests performed up to 1200°C, building upon previous room temperature inves...

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Published in: Journal of the European Ceramic Society
ISSN: 0955-2219 1873-619X
Published: Elsevier BV 2026
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URI: https://cronfa.swan.ac.uk/Record/cronfa70331
Abstract: The diametrical compression test method was used in this study to determine the high temperature interlaminar tensile strength of a SiCf/SiC Ceramic Matrix Composite. Two disk geometries are employed (Φ4.5 mm and Φ9 mm) with tests performed up to 1200°C, building upon previous room temperature investigations conducted by the authors [1]. For all tests, disks failed parallel to the loading axis spanning between the upper and lower contact points, ensuring repeatability and reliability even at high temperatures. Digital image correlation was applied to selected tests to measure the full-field strain and observe damage progression to ultimate failure. Weibull distribution was implemented to determine the characteristic strength and distribution, to understand the influence of specimen volume and high temperature oxidation. High temperature results were revealed to have a higher characteristic strength and Weibull modulus owing to the associated oxidation mechanisms, whether the formation of silica rich regions or degradation of the interphase.
Keywords: Ceramic matrix composite; High temperature interlaminar strength; Diametrical compression; Weibull distribution; Digital image correlation
College: Faculty of Science and Engineering
Funders: The current research was funded via the IUK/ATI CEMTEC programme (113160). The provision of materials and technical support from Rolls-Royce plc. is gratefully acknowledged. X-ray CT imaging was performed at the TWI Inspection Centre (Wales, UK). Mechanical testing was performed by Swansea Materials Research & Testing (SMaRT).
Issue: 2
Start Page: 117811

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