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

Viggo Tvergaard

doi:10.1016/j.msea.2003.11.009

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

Viggo Tvergaard

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

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.

Original language	English
Journal	Materials Science and Engineering: A - Structural Materials: Properties, Microstructure and Processing
Volume	369
Issue number	1-2
Pages (from-to)	192-200
ISSN	0921-5093
DOIs	https://doi.org/10.1016/j.msea.2003.11.009
Publication status	Published - 24 Mar 2004

Keywords

unit-cell model
metal matrix composites
plasticity
fracture

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title = "Breakage and debonding of short brittle fibres among particulates in a metal matrix",

abstract = "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. ",

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N2 - 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.

AB - 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.

KW - unit-cell model

KW - metal matrix composites

KW - plasticity

KW - fracture

U2 - 10.1016/j.msea.2003.11.009

DO - 10.1016/j.msea.2003.11.009

M3 - Journal article

SN - 0921-5093

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EP - 200

JO - Materials Science and Engineering: A - Structural Materials: Properties, Microstructure and Processing

JF - Materials Science and Engineering: A - Structural Materials: Properties, Microstructure and Processing

IS - 1-2

ER -

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

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