Compressive strength of composite laminates following free edge impact

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29 Citations (Scopus)

Abstract

Barely Visible Impact Damage (BVID) can occur when laminated composite material is subject to free edge Impact loads in the plane of the laminate and can result in a significant reduction in compressive strength caused by buckle-driven delamination. This paper will report on a semi-analytical fracture mechanics model that predicts the Compression After Impact (CAI) strength of composite laminates subject to in-plane free edge Impact. Compression testing has been undertaken on three impacted coupons in order to validate the theoretical results. Analytical results are shown to be on average within 10% of experimental values for the strain at which propagation of damage occurs.
Original languageEnglish
Pages (from-to)1056-1065
Number of pages10
JournalComposites Part A Applied Science and Manufacturing
Volume41
Issue number9
DOIs
Publication statusPublished - Sep 2010
Event10th International Conference on Deformation and Fracture of Composites (DFC-10) - Sheffield, UK United Kingdom
Duration: 15 Apr 200917 Apr 2009

Keywords

  • free edge impact
  • laminates
  • damage tolerance
  • analytical modelling

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