Quantitative evaluation of fatigue damage growth in CFRP laminates that changes due to applied stress level

Atsushi Hosoi, Keigo Takamura, Narumichi Sato, Hiroyuki Kawada

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The change of fatigue damage behavior depending on an applied stress level in carbon fiber reinforced plastic (CFRP) laminates was evaluated quantitatively in this study. To evaluate damage growth, the energies released due to transverse crack propagation and delamination growth per unit length with consideration of transverse crack propagation were derived. Moreover, the transverse crack propagation and the delamination growth were evaluated using a modified Paris law that gives the relationship between the damage growth rate and the energy released due to damage growth. As a result, it was found that the growth of the transverse crack and the delamination could be evaluated with the unique Paris law constants, respectively. Finally, it was concluded that the change of the fatigue damage growth behavior was caused due to the difference of the growth rate of the transverse cracks and delamination at an applied stress level.

Original languageEnglish
Pages (from-to)781-787
Number of pages7
JournalInternational Journal of Fatigue
Volume33
Issue number6
DOIs
Publication statusPublished - 2011 Jun 1

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Keywords

  • Delamination
  • Fatigue crack growth
  • High-cycle fatigue
  • Polymer matrix composites
  • Transverse crack

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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