Delamination resistance of through thickness reinforced composites

Mehdi Yasaee, Galal Mohamed, Giuliano Allegri, Stephen R. Hallett

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

In this study the delamination resistance of arrays of Z-pins are measured in Mode I, Mode II and mixed Mode I/II loading scenarios, using standard fracture toughness test methodologies. Through experimental observations and measured results it is shown that the bridging behaviours predicted in previous single pin tests are analogous to the arrays of pins inside fracture toughness coupons. Although it is not feasible to measure the steady state delamination propagation in a through-thickness reinforced (TTR) region in all Mode mixities, a method is proposed to measure the apparent toughness of these TTR pins at predetermined delamination lengths. This method provides useful, conservative results that could improve the design of composite components which contain TTR elements.

Original languageEnglish
Title of host publication16th European Conference on Composite Materials, ECCM 2014
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Print)9780000000002
Publication statusPublished - 1 Jan 2014
Event16th European Conference on Composite Materials, ECCM 2014 - Seville, Spain
Duration: 22 Jun 201426 Jun 2014

Conference

Conference16th European Conference on Composite Materials, ECCM 2014
CountrySpain
CitySeville
Period22/06/1426/06/14

Structured keywords

  • Composites UTC

Keywords

  • Damage tolerance
  • Delamination testing
  • Through thickness reinforcement
  • Z-pins

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