Mode I interlaminar fracture of woven glass/epoxy multidirectional laminates

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Pereira, AB (Author) Other; de Morais, AB (Author) Other; de Moura, MFSF (Author) FEUP; Magalhaes, AG (Author) Other

Journal

Title: Composites Part A: Applied Science and Manufacturing

Vol. 36

Pages: 1119-1127

ISSN: 1359-835X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 36 Citations

Scopus - 52 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-000-5EC

DOI: 10.1016/j.compositesa.2005.01.006

Abstract (EN): 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).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9