CUED Publications database

The fracture energy of metal fibre reinforced ceramic composites (MFCs)

Pemberton, SR and Oberg, EK and Dean, J and Tsarouchas, D and Markaki, AE and Marston, L and Clyne, TW (2011) The fracture energy of metal fibre reinforced ceramic composites (MFCs). Composites Science and Technology, 71. pp. 266-275. ISSN 0266-3538

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Abstract

A model is presented for prediction of the fracture energy of ceramic-matrix composites containing dispersed metallic fibres. It is assumed that the work of fracture comes entirely from pull-out and/or plastic deformation of fibres bridging the crack plane. Comparisons are presented between these predictions and experimental measurements made on a commercially-available composite material of this type, containing stainless steel (304) fibres in a matrix predominantly comprising alumina and alumino-silicate phases. Good agreement is observed, and it's noted that there is scope for the fracture energy levels to be high (~20kJm-2). Higher toughness levels are both predicted and observed for coarser fibres, up to a practical limit for the fibre diameter of the order of 0.5mm. Other deductions are also made concerning strategies for optimisation of the toughness of this type of material. © 2010 Elsevier Ltd.

Item Type: Article
Uncontrolled Keywords: A. Ceramic-matrix composites (CMCs) A. Short-fibre composites B. Fibre/matrix bond B. Fracture toughness C. Modelling
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Div C > Biomechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:26
Last Modified: 08 Dec 2014 02:34
DOI: 10.1016/j.compscitech.2010.10.011