Measurement of cohesive law for kink-band formation in unidirectional composite
2016 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 151, 1-10 p.Article in journal (Refereed) Published
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.
Composites, Configurational forces, DIC-measurement, Kink-band formation, Cohesive zone modelling
Research subject Technology
IdentifiersURN: urn:nbn:se:his:diva-11717DOI: 10.1016/j.engfracmech.2015.10.040ScopusID: 2-s2.0-84947934411OAI: oai:DiVA.org:his-11717DiVA: diva2:874472
ProjectsNFFP FiKomINFINIT MDC
FunderKnowledge Foundation, 20130305VINNOVA, NFFP 013223