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The influence of hydrostatic pressure on the interlaminar fracture toughness of carbon/epoxy composites

✍ Scribed by D. Cartié; P. Davies; M. Peleau; I.K. Partridge

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
515 KB
Volume
37
Category
Article
ISSN
1359-8368

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✦ Synopsis

The use of composites for deep sea applications requires a thorough understanding of the behaviour of these materials. While several studies have examined the influence of pressure on in-plane properties few data are available for the interlaminar fracture behaviour. This paper presents results from such tests performed in a specially designed pressure vessel mounted on a standard test machine, which allows pressures up to 1000 bars (100 MPa) to be applied during mechanical testing. Mode I and Mode II tests have been performed on a unidirectional IM7/977-2 carbon/epoxy composite. No effect of pressure was noted on Mode I fracture toughness. A data reduction scheme has been developed for Mode II loading and an increase in G IIC with increasing pressure was noted.

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