Determination of fracture energy and tensile cohesive strength in Mode I delamination of angle-ply laminated composites

K. Gordnian, H. Hadavinia, P. J. Mason, Erdogan Madenci

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The energy release rate in delamination of angle-ply laminated double cantilever composite beam specimens was calculated using the compliance equation, and interlaminar cohesive strengths were obtained. Instead of the traditional approach of a beam on an elastic foundation, a second-order shear-thickness deformation beam theory (SSTDBT) was considered. The equilibrium equations were obtained using the principle of minimum total potential energy and the system of ordinary differential equations were solved analytically. The problem was solved for [0°]6, [±30°]5, and [±45°]5 laminates with mid-plane delaminations and the results were verified using experimental evidence available in the literature.

Original languageEnglish (US)
Pages (from-to)577-586
Number of pages10
JournalComposite Structures
Issue number4
Publication statusPublished - Feb 2008



  • Cohesive zone model
  • Crack
  • Delamination
  • Fracture toughness
  • Laminates

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ceramics and Composites

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