RATE EFFECTS ON DELAMINATION FRACTURE TOUGHNESS OF A TOUGHENED GRAPHITE/EPOXY.

Isaac M. Daniel*, Igbal Shareef, Abdu A. Aliyu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

29 Scopus citations

Abstract

The objective of this study was to determine the effects of loading rate on interlaminar fracture toughness of T300/F-185 graphite/epoxy composite, having an elastomer-modified epoxy resin matrix. Mode I interlaminar fracture was investigated by means of uniform width and width-tapered double cantilever beam (DCB) specimens. Continuous records were obtained of load, deflection, and crack extension for determination of the strain energy release rate. The latter was calculated by means of the area method and beam analysis method, and expressed as a power law of the crack extension velocity. Results indicate that the strain energy release rate decreases with crack velocity by over 20% over three decades of crack velocity.

Original languageEnglish (US)
Title of host publicationASTM Special Technical Publication
EditorsNorman J. Johnston
PublisherASTM
Pages260-274
Number of pages15
ISBN (Print)0803109342
StatePublished - Dec 1 1987

ASJC Scopus subject areas

  • Engineering(all)

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