MICROBUCKLE PROPAGATION IN A UNIDIRECTIONAL CARBON FIBER-EPOXY MATRIXCOMPOSITE

Citation
S. Sivashanker et al., MICROBUCKLE PROPAGATION IN A UNIDIRECTIONAL CARBON FIBER-EPOXY MATRIXCOMPOSITE, Acta materialia, 44(7), 1996, pp. 2581-2590
Citations number
16
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
ISSN journal
13596454
Volume
44
Issue
7
Year of publication
1996
Pages
2581 - 2590
Database
ISI
SICI code
1359-6454(1996)44:7<2581:MPIAUC>2.0.ZU;2-2
Abstract
Out-of-plane microbuckle growth is observed in a unidirectional carbon fibre-epoxy matrix composite under compressive loading. Experimental measurements of the overall kink-band width confirm that a growing mic robuckle propagates in a crack-like manner rather than in a dislocatio n-like manner. The microbuckle is modelled as a bridged Mode I crack w ith compressive bridging tractions. A large scale bridging model with a crack tip toughness and a constant bridging stress is successful in correlating the length and width of a growing microbuckle with the rem ote stress. Crown copyright (C) 1996