Characterization of tensile damage progress in stitched CFRP laminates

Akinori Yoshimura, Shigeki Yashiro, Tomonaga Okabe, Nobuo Takeda

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This study experimentally and numerically investigated the tensile damage progress in stitched laminates. In particular, it focused on the effects of stitching on the damage progress. First, we experimentally confirmed that ply cracks and delamination appeared under load regardless of stitching. We then performed damage-extension simulation for stitched laminates using a layer-wise finite element model with stitch threads as beam elements, in which the damage (ply cracks and delamination) was represented by cohesive elements. A detailed comparison between observation and the simulated results confirmed that stitching had little effect on the onset and accumulation of ply cracks. Furthermore, we demonstrated that the stitch threads significantly suppressed the extension of the delamination.

Original languageEnglish
Pages (from-to)223-244
Number of pages22
JournalAdvanced Composite Materials: The Official Journal of the Japan Society of Composite Materials
Volume16
Issue number3
DOIs
Publication statusPublished - 2007 Jun 1

Keywords

  • Damage
  • Damage extension simulation
  • Delamination
  • Finite element analysis
  • Stitched laminate composite
  • Tensile test
  • Transverse crack

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering

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