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Journal article

Breakage and debonding of short brittle fibres among particulates in a metal matrix

By Tvergaard, Viggo1,2

From

Solid Mechanics, Department of Mechanical Engineering, Technical University of Denmark1

Department of Mechanical Engineering, Technical University of Denmark2

The competition of failure by fibre cracking or decohesion of the fibre-matrix interface is analysed for aluminium reinforced by aligned, short SiC fibres. An axisymmetric unit-cell model containing a number of differently shaped fibres or particulates is used here to represent failure by debonding or fracture of a relatively long discontinuous fibre among particulates that do not fail.

A cohesive zone model that accounts for normal separation as well as tangential separation is used to represent debonding, while fibre fracture is represented by a critical value of the average tensile stress on a cross-section. The effect of various distributions of different size fibres is investigated. (C) 2003 Elsevier B.V.

All rights reserved.

Language: English
Year: 2004
Pages: 192-200
ISSN: 18734936 and 09215093
Types: Journal article
DOI: 10.1016/j.msea.2003.11.009
Keywords

fracture metal matrix composites plasticity unit-cell model

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