Influence of the principal tensile stresses on delamination fracture mechanisms and their associated morphology for different loading modes in carbon/epoxy composites

In this study, the delamination toughness under pure modes I and II and a 2/1 mode mixity ratio and the associated fractures morphology of AS4/8552 and AS4/3506-1 unidirectional carbon fibre/epoxy composites have been related to the principal tensile stresses at the crack front. null Pure modes I and II and a GI/GII = 2/1 mixed-mode ratio tests were respectively carried out by means of the following methods: DCB (Double Cantilever Beam), ENF...