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The influence of the dependence of matrix toughness on deformation rate and temperature on the interlaminar fracture of polyetherimide (PEI)/carbon-fibre unidirectional laminates has been investigated. Fracture toughness versus crack speed data for the matrix and the composite, respectively, were...
An analysis is presented of the influence of fibre irregularity on the tensile properties of carbon and glass fibres. Initially the intrisic tensile properties of an elementary length of fibre subjected to uniform stress distribution were evaluated by using results of the fibre bending test and a...
The quasi-static characteristics of impact responses and impact-induced delamination crack propagation in (90 5 /0 5 /90 5 ) graphite/epoxy laminates subjected to low-velocity heavy mass impact have been investigated. A one-degree-of-freedom spring-mass model was used to predict the contact force...