Failure of composite T-joints in bending with through-the- Thickness reinforcement: Stitching vs Z-pinning

H. Cui, Y. L. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

The stitched composite T-joints and Z-pinned ones subject to bending load were investigated in this paper. A simple theoretical model characterizing the failure process of through the thickness reinforcement (TTR) during mode I delamination was presented. The experimental results showed that the initial damage load and maximum load of stitched specimens are higher than that of Z-pinned ones, while the energy absorption of stitched specimens during delamination is lower than that of Z-pinned ones. The energy absorption values predicted by the present model meet the experiments reasonably well. High friction force at the interface between TTR tow and matrix, with a long pull-out displacement of the tow, helps to improve the delamination resistance.

Original languageEnglish
Title of host publicationAdvances in Fracture and Damage Mechanics XI
PublisherTrans Tech Publications Ltd
Pages233-236
Number of pages4
ISBN (Print)9783037854631
DOIs
StatePublished - 2012
Event11th International Conference on Fracture and Damage Mechanics, FDM 2012 - Xian, China
Duration: 18 Sep 201221 Sep 2012

Publication series

NameKey Engineering Materials
Volume525-526
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference11th International Conference on Fracture and Damage Mechanics, FDM 2012
Country/TerritoryChina
CityXian
Period18/09/1221/09/12

Keywords

  • Delamination
  • Fracture toughness
  • Stitch
  • Z-pin

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