Prediction of initiation of transverse cracks in cross-ply CFRP laminates under fatigue loading by fatigue properties of unidirectional CFRP in 90° direction

Atsushi Hosoi, Shigeyoshi Sakuma, Yuzo Fujita, Hiroyuki Kawada

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A fatigue life to the initiation of transverse cracks in cross-ply carbon fiber-reinforced plastic (CFRP) laminates has been predicted using properties of the fatigue strength of unidirectional CFRP in the 90° direction. In the experiments, unidirectional [90]12 laminates were used to obtain a plot of maximum stress versus number of cycles to breaking, and two types of cross-ply laminates of [0/904]S and [0/906]S were used to evaluate the initiation and multiplication of transverse cracks under fatigue loading. Transverse cracks were studied by optical microscopy and soft X-ray photography. Analytical and experimental results showed good agreement, and the fatigue life for transverse crack initiation in cross-ply laminates was predicted successfully from the fatigue strength properties of the unidirectional CFRP in the 90° direction. The prediction results showed a conservative fatigue life than the experimental results.

Original languageEnglish
Pages (from-to)398-405
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume68
DOIs
Publication statusPublished - 2015 Jan

Keywords

  • A. Polymer-matrix composites (PMCs)
  • B. Fatigue
  • B. Transverse cracking
  • C. Laminate mechanics

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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