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Energy absorption and damage mechanisms in progressive crushing of corrugated NCF laminates: Fractographic analysis
RISE - Research Institutes of Sweden, Material och produktion, SICOMP.
RISE - Research Institutes of Sweden, Material och produktion, SICOMP.ORCID-id: 0000-0002-2627-3280
RISE - Research Institutes of Sweden, Material och produktion, SICOMP.
2014 (Engelska)Ingår i: Composite structures, ISSN 0263-8223, E-ISSN 1879-1085, Vol. 110, nr 1, s. 110-117Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

To develop reliable and physically based models for the crash behaviour of composite laminates, a thorough understanding of the failure mechanisms is crucial. Compression tests of corrugated Non-Crimp Fabric (NCF) laminates, made of carbon fibre unidirectional (UD) fabric with a [0/90]3S stacking sequence and epoxy, have been performed to study the energy absorbing damage mechanisms. Samples from the specimens have been studied with optical microscopy and Scanning Electron Microscopy (SEM) to identify the mechanisms involved in the crushing process. The specimens tested fail partly in bending and partly in pure compression with a mode I delamination separating these two regions. In the region failing in pure compression, the main damage mechanisms are kink band formation and matrix cracking of transverse bundles, whereas in the part failing in bending mixed mode delaminations, intralaminar shear fracture of axial bundles and kink band formation through parts of bundles are identified. © 2013 Elsevier Ltd.

Ort, förlag, år, upplaga, sidor
2014. Vol. 110, nr 1, s. 110-117
Nyckelord [en]
Crush, Fabrics/textiles, Fractography, Fracture, Fracture mechanics
Nationell ämneskategori
Materialteknik
Identifikatorer
URN: urn:nbn:se:ri:diva-13148DOI: 10.1016/j.compstruct.2013.11.001OAI: oai:DiVA.org:ri-13148DiVA, id: diva2:973344
Tillgänglig från: 2016-09-22 Skapad: 2016-09-22 Senast uppdaterad: 2019-06-28Bibliografiskt granskad

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Förlagets fulltexthttp://www.sciencedirect.com/science/article/pii/S0263822313005813

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Olsson, Robin

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