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 Mode I interlaminar fracture of woven glass/epoxy multidirectional laminates
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5271

title: Mode I interlaminar fracture of woven glass/epoxy multidirectional laminates
authors: Pereira, A.B.
Morais, A.B. de
Moura, M.F.S.F. de
Magalhães, A.G.
keywords: Polymer-matrix composites (PMCs)
Laminates
Delamination
Fracture toughness
Finite Element Analysis (FEA)
issue date: 2005
publisher: Elsevier
abstract: Mode I Double Cantilever Beam (DCB) tests were performed on woven glass/epoxy multidirectional laminates. Selected specimen stacking sequences with starter delaminations in theta/-theta and 0/theta interfaces were first evaluated with three-dimensional finite element (FE) models. During the DCB tests, most specimens suffered intraply damage and crack branching to a neighbouring interface. Nevertheless, it was generally possible to measure valid interlaminar critical strain energy release rates, G(IC), of initiation from the film and from a mode I precrack. The former were significantly lower than the latter due to steep R-curve effects. G(IC) values of 0/theta specimens were fairly theta-independent, while theta/-0 specimens exhibited higher G(IC) from the film. A subsequent FE analysis provided explanations for the interface effect on G(IC).
URI: http://hdl.handle.net/10773/5271
ISSN: 1359-835X
publisher version/DOI: http://dx.doi.org/10.1016/j.compositesa.2005.01.006
source: Composites Part A: Applied Science and Manufacturing
appears in collectionsMEC - Artigos

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