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An experimental method to determine the critical energy release rate associated with longitudinal compressive failure in CFRP
University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre. (Materialmekanik, Mechanics of Materials)
University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre. (Materialmekanik, Mechanics of Materials)
University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre. (Materialmekanik, Mechanics of Materials)ORCID iD: 0000-0003-0787-4942
GKN Aerospace Engine Systems Sweden, Trollhättan, Sweden.
2013 (English)In: Proceeding of the 19th international conference on composite materials (ICCM 19), 2013Conference paper (Refereed)
Abstract [en]

A test specimen for measurement of the critical energy release rate associated with longitudinal compressive failure is proposed. High strains are localized by decreasing the out-of-plane thickness towards the anticipated damage region which consists of a unidirectional (UD) laminate. Thus, the compressive fibre failure mode is isolated. Microscopic studies show that the UD-material fails in a kinking mode. A method based on a generalized form of the J-integral and full-field measurements of the strain field is developed to extract the fracture energy. The fracture energy in four experiments is measured to be 20-40 kN/m. Finite element simulations  are  performed  to  validate  the experimental results. The essential features of the response are captured by modelling the damage region with cohesive elements.

Place, publisher, year, edition, pages
2013.
Keyword [en]
CFRP, compressive failure, kink-band, cohesive zone model
National Category
Applied Mechanics
Research subject
Technology
Identifiers
URN: urn:nbn:se:his:diva-8585ISBN: 978-0-9696797-1-4 OAI: oai:DiVA.org:his-8585DiVA: diva2:660015
Conference
19th International Conference on Composite Materials, July 28-August 2, 2013, Montréal, Canada
Available from: 2013-10-28 Created: 2013-10-28 Last updated: 2015-10-23Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf