Abstract
The digital speckle correlation method is used to study the deformation and fracture behaviour of glass-fibre-reinforced plastics (GFRP) composites with V-notch under tensile loading. The deformation images surrounding the notch tip at varying load levels were captured; both the horizontal and vertical displacement fields are acquired. At the same time, the strain evolution information at the notch tip during the whole damage and fracture process of the notched sample is recorded by a three-element strain gauge. The effects of notch angle and notch depth on deformation and fracture of notched GFRP are analyzed. Some microscopic fracture characteristics such as interfacial debonding, fibre fracture and matrix damage are shown.
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