Shear properties of a sandwich composite containing defects

Autor:	R.S. Thomson, Adrian P. Mouritz, M.Z.Shah Khan
Rok vydání:	1998
Předmět:	chemistry.chemical_classification Materials science Composite number Glass fiber Polymer Fatigue limit Cracking Polyvinyl chloride chemistry.chemical_compound Shear (geology) chemistry Ceramics and Composites Shear strength Composite material Civil and Structural Engineering
Zdroj:	Composite Structures. 42:107-118
ISSN:	0263-8223
DOI:	10.1016/s0263-8223(98)00058-0
Popis:	This paper investigates the effects of interfacial crack size and impact damage size on the shear properties and failure mechanisms of a typical marine sandwich composite made from glass reinforced polymer (GRP) skins and a poly(vinyl chloride) (PVC) foam core. An abrupt decrease in the static shear strength and fatigue resistance occurred when the interfacial crack length between the skin and core exceeded ~ 20–30 mm due to the failure mechanism changing from wrinkling of the GRP skin to shear cracking of the foam core. The static shear failure loads of the composite containing interfacial cracks between 20 and 90 mm in length were used to test the accuracy of two models for predicting the strengths of defected sandwich composites. The shear properties were also reduced when the impact damage area was increased, although the magnitude of the reduction was determined by the impact energy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81866b3a0717fb32e976fac6a7bc5ed0 https://doi.org/10.1016/s0263-8223(98)00058-0 Zobrazit plný text záznamu Full Text from ScienceDirect