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Measurement of cohesive law for kink-band formation in unidirectional composite
University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. (Materialmekanik, Mechanics of Materials)
University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. (Materialmekanik, Mechanics of Materials)
University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. (Materialmekanik, Mechanics of Materials)ORCID iD: 0000-0003-0787-4942
GKN Aerospace Engine Systems, Trollhättan, Sweden.
2016 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 151, 1-10 p.Article in journal (Refereed) Published
Abstract [en]

Kink-band formation is an important mechanism limiting the compressive strength of high strength composites. A cohesive zone model is used to model the material in a unidirectional carbon fibre composite that forms the kink-band. Equilibrium of configurational forces is used to design and evaluate the experiments. Microscopic studies show that a kink-band is formed with the height of about 200 μm. The corresponding cohesive law has a peak stress of about 1.5 GPa, a compression at failure of about 50 μm and a fracture energy of about 25 kJ/m2.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 151, 1-10 p.
Keyword [en]
Composites, Configurational forces, DIC-measurement, Kink-band formation, Cohesive zone modelling
National Category
Applied Mechanics
Research subject
Technology
Identifiers
URN: urn:nbn:se:his:diva-11717DOI: 10.1016/j.engfracmech.2015.10.040Scopus ID: 2-s2.0-84947934411OAI: oai:DiVA.org:his-11717DiVA: diva2:874472
Projects
NFFP FiKomINFINIT MDC
Funder
Knowledge Foundation, 20130305VINNOVA, NFFP 013223
Available from: 2015-11-27 Created: 2015-11-27 Last updated: 2016-02-02Bibliographically approved

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CiteExportLink to record
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Citation style
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