High-cycle fatigue characteristics of quasi-isotropic CFRP laminates

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29 Citations (Scopus)

Abstract

High-cycle fatigue characteristics of quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates [-45/0/45/90]s up to 108 cycles were investigated. To assess the fatigue behavior in the high-cycle region, fatigue tests were conducted at a frequency of 100 Hz, since it is difficult to investigate the fatigue characteristics in high-cycle at 5 Hz. Then, the damage behavior of the specimen was observed with a microscope, soft X-ray photography and a 3D ultrasonic inspection system. In this study, to evaluate quantitative characteristics of both transverse crack propagation and delamination growth in the high-cycle region, the energy release rate associated with damage growth in the width direction was calculated. Transverse crack propagation and delamination growth in the width direction were evaluated based on a modified Paris law approach. The results revealed that transverse crack propagation delayed under the test conditions of less than σ

Original languageEnglish
Pages (from-to)151-166
Number of pages16
JournalAdvanced Composite Materials: The Official Journal of the Japan Society of Composite Materials
Volume16
Issue number2
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • Delamination
  • Energy release rate
  • High-cycle fatigue
  • Polymer-matrix composites
  • Transverse cracking

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering

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