The effect of the through-the-thickness compressive stress on mode II interlaminar fracture toughness

G. Catalanotti, T. Scalici, G. Pitarresi, F. P. Van Der Meer

Research output: Contribution to conferencePaper

Abstract

The effect of through-the-thickness compressive stress on the mode II interlaminar fracture toughness is investigated experimentally and replicated numerically. The modified Transverse Crack Tensile specimen recently proposed by the authors is used, together with an experimental device designed to apply a constant transverse compressive stress on the surface of the specimen. Experiments are conducted using IM7/8552 specimens for different compressive stresses, ranging from 0 to 100 MPa, covering all the practical applications commonly encountered in the aeronautical industry (e.g., tightened filled holes or bolted joints). It is shown that the mode II interlaminar fracture toughness increases with the applied compressive through-the-thickness stress. Finally, experiments are replicated using appropriate numerical models based on cohesive elements that take into account frictional effects. A good agreement between numerical predictions and experiments is found.

Original languageEnglish
Publication statusPublished - 01 Jan 2017
Event21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China
Duration: 20 Aug 201725 Aug 2017

Conference

Conference21st International Conference on Composite Materials, ICCM 2017
CountryChina
CityXi'an
Period20/08/201725/08/2017

Keywords

  • Compressive stress
  • Interlaminar fracture toughness
  • Mode II delamination

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

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