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 |
Author: | 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). |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/5271 |
DOI: | 10.1016/j.compositesa.2005.01.006 |
ISSN: | 1359-835X |
Appears in Collections: | DEM - Artigos |
Files in This Item:
File | Description | Size | Format | |
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CompA_dcb_gep.pdf | Documento principal | 491.9 kB | Adobe PDF |
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