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An experimental method to determine the critical energy release rate associated with longitudinal compressive failure in CFRP
Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system. (Materialmekanik, Mechanics of Materials)
Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system. (Materialmekanik, Mechanics of Materials)
Högskolan i Skövde, Institutionen för teknik och samhälle. Högskolan i Skövde, Forskningscentrum för Virtuella system. (Materialmekanik, Mechanics of Materials)ORCID-id: 0000-0003-0787-4942
GKN Aerospace Engine Systems Sweden, Trollhättan, Sweden.
2013 (engelsk)Inngår i: Proceeding of the 19th international conference on composite materials (ICCM 19), 2013Konferansepaper, Publicerat paper (Fagfellevurdert)
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.

sted, utgiver, år, opplag, sider
2013.
Emneord [en]
CFRP, compressive failure, kink-band, cohesive zone model
HSV kategori
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URN: urn:nbn:se:his:diva-8585Scopus ID: 2-s2.0-85053208097ISBN: 978-0-9696797-1-4 (tryckt)OAI: oai:DiVA.org:his-8585DiVA, id: diva2:660015
Konferanse
19th International Conference on Composite Materials, July 28-August 2, 2013, Montréal, Canada
Tilgjengelig fra: 2013-10-28 Laget: 2013-10-28 Sist oppdatert: 2019-09-16bibliografisk kontrollert

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Svensson, DanielAlfredsson, K. SvanteStigh, Ulf

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Totalt: 1115 treff
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