A method of evaluation of transverse critical energy release rate (fiber failure mode) in advanced composites

Yuris Dzenis, Minghao Qin, Nicholas J. Pagano

Research output: Contribution to journalArticle

Abstract

Ultimate failure of composite laminates typically involves fiber failure after a number of spurious cracking modes have developed and grown. The possibility that this failure can be treated as a legitimate fracture process has apparently been neglected due to the difficulty in producing the appropriate failure mode in the laboratory. This issue is addressed in this communication, where we design a specimen in which the 0 degree ply is sandwiched between 90 degree plies which serve as guides to direct the crack propagation across the fibers. The corresponding fracture anisotropy, or the ratio of the transverse and longitudinal critical energy release rates is found to be 1,011 for a graphite-epoxy unidirectional composite, the highest fracture anisotropy measured to date.

Original languageEnglish (US)
JournalInternational Journal of Fracture
Volume118
Issue number1
StatePublished - Nov 1 2002

Fingerprint

Energy Release Rate
Energy release rate
Failure Mode
Failure modes
Transverse
Composite
Fiber
Fibers
Anisotropy
Composite materials
Evaluation
Graphite epoxy composites
Composite Laminates
Graphite
Epoxy
Crack Propagation
Cracking
Laminates
Crack propagation
Communication

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials

Cite this

A method of evaluation of transverse critical energy release rate (fiber failure mode) in advanced composites. / Dzenis, Yuris; Qin, Minghao; Pagano, Nicholas J.

In: International Journal of Fracture, Vol. 118, No. 1, 01.11.2002.

Research output: Contribution to journalArticle

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