Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 43, Issue 1, Pages 198-207Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2011.10.009
Keywords
Fractography; Delamination; Fracture toughness; Crack arrest
Funding
- ESPRC
- DSTL under CRASHCOMPS [EP/G003599]
- Airbus UK
- EPSRC [EP/G003599/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G003599/1] Funding Source: researchfish
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An investigation is described concerning the interaction of propagating interlaminar cracks with embedded strips of interleaved materials in E-glass fibre reinforced epoxy composites. The approach deploys interlayer strips of a thermoplastic film, thermoplastic particles, chopped fibres, glass/epoxy prepreg, thermoset adhesive film and thermoset adhesive particles ahead of the crack path on mid-plane of Double Cantilever Beam (DCB) specimens. During these mode I tests, the interlayers were observed to confer an apparent increase in the toughness of the host material. The crack arrest performance of individual inclusion types are discussed and the underlying mechanisms for energy absorption and the behaviour of the crack at the interaction point of the interleave edge were analysed using scanning electron microscopy. (C) 2011 Elsevier Ltd. All rights reserved.
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