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Title: Double cantilever beam testing of multidirectional laminates
Author: Morais, A.B. de
Keywords: Polymer–matrix composites (PMCs)
Fracture toughness
Issue Date: 2003
Publisher: Elsevier
Abstract: Several difficulties in the double cantilever beam (DCB) tests of multidirectional laminates often prevent valid measurements of the mode I critical strain energy release rate GIc : In this paper, several DCB specimens were analysed with 3D finite element models. The results showed that the undesired effects of residual stresses and of mode-mixity can be minimised. An interlaminar stress based fracture criterion predicts that the GIc of multidirectional specimens is typically 10 – 40% higher than the GIc of unidirectional [08]n laminates. This agrees with the few valid experimental data available.
Peer review: yes
DOI: 10.1016/j.compositesa.2003.08.008
ISSN: 1359-835X
Appears in Collections:DEM - Artigos

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