On the behaviour of metal matrix composites subjected to cyclic thermal loading

Citation
Ars. Ponter et Fa. Leckie, On the behaviour of metal matrix composites subjected to cyclic thermal loading, J MECH PHYS, 46(11), 1998, pp. 2183-2199
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
ISSN journal
0022-5096 → ACNP
Volume
46
Issue
11
Year of publication
1998
Pages
2183 - 2199
Database
ISI
SICI code
0022-5096(199811)46:11<2183:OTBOMM>2.0.ZU;2-B
Abstract
The mechanical properties of metal matrix composite materials are strongly effected by thermal cycling. Through the study of experimental data, for an aluminium/alumina continuous fibre composite, the paper investigates the r elationship between the observed behaviour and the predictions, using simpl ified methods of analysis, of classical plasticity models for the matrix ma terial. This comparison shows that many of the features of the data can be understood in this way but the long term cyclic growth of strain, when the material has reached a stabilised state, cannot be so understood. This effe ct is due to material ratchetting. The conclusion of this study is that the inelastic deformation of machine components, when composed of such a mater ial and subject to many cycles of temperature, depends upon an understandin g of the stress dependence of material ratchetting. (C) 1998 Elsevier Scien ce Ltd. All rights reserved.