Fatigue delamination initiation in L-bend CFRP coupons

J. P. Blanchfield*, G. Allegri

*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

Accurate modelling of the delamination of composites due to cyclic loading is important to reduce the costs associated with fatigue testing of structures. This work aims to identify the point of damage initiation in a carbon-fibre laminate subject to pure interlaminar tensile cyclic loading for a range of severities and stress ratios, in order to generate full SN-curves for an aerospace-grade carbon-fibre epoxy composite. Curved beams have been used in 4-point bend tests roughly in line with the ASTM D 6415 test standard to generate the required failure conditions. The tests were monitored in-situ using an Acoustic Emissions system and post-test CT (X-Ray) Scans were employed to identify failure conditions in the specimens.

Original languageEnglish
Title of host publication16th European Conference on Composite Materials, ECCM 2014
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Print)9780000000002
Publication statusPublished - 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

  • Composites
  • Curved beams
  • Initiation
  • SN-curves

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  • Cite this

    Blanchfield, J. P., & Allegri, G. (2014). Fatigue delamination initiation in L-bend CFRP coupons. In 16th European Conference on Composite Materials, ECCM 2014 European Conference on Composite Materials, ECCM.