Feathering Cracks Formation At Single Wing Crack Evolution
ENGINEERING MECHANICS 2019(2019)
Abstract
Wing crack formation was studied in a compression test system on PMMA and gypsum. Wing cracks are the tensile cracks starting in the area close to the top of the preexisting defect - an inclined initial cut. The crack growth is followed by relative shear motion between the surfaces of the initial defect. The shear zone was studied separately and a set of feathering cracks developed. The scenarios of complex wing-crack systems development are discussed.
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Key words
Wing Crack, Shear Fracture, Secondary Cracks
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