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Optimising the crack arrest ability of unidirectional metal matrix composites

โœ Scribed by C.A. Rodopoulos; E.R. de los Rios; J.R. Yates

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
216 KB
Volume
21
Category
Article
ISSN
0142-1123

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โœฆ Synopsis

Optimisation of the fatigue crack arrest ability of unidirectional continuous fibre reinforced metal matrix composites is investigated by considering the damaging processes of interfacial debonding and fibre bridging. A sensitivity analysis of the parameters affecting these damage mechanisms is presented. It is suggested that fibre interface debonding is the principal controlling factor in determining the crack arrest ability of these materials. The Fatigue Damage Map was used to estimate the values of interfacial shear strength needed to optimise the crack arrest condition.

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Modeling of crack bridging in a unidirec
Modeling of crack bridging in a unidirectional metal matrix composite
โœ Louis J. Ghosn; Pete Kantzos; Jack Telesman ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Springer Netherlands ๐ŸŒ English โš– 670 KB

The effective fatigue crack driving force and crack opening profiles were determined analytically for fatigue tested unidirectional composite specimens exhibiting fiber bridging. The crack closure pressure due to bridging was modeled using two approaches; the fiber pressure model and the shear lag m