Prediction of in situ strengths in composites: Some considerations 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Composite structures
年/卷/期
2019 / 207 / Jan.
页码
889-893
ISSN号
0263-8223
作者单位
Queens Univ Belfast, Sch Mech & Aerosp Engn, ACRG, Belfast BT9 5AH, Antrim, North Ireland;
作者
Catalanotti, G.;
摘要
The classic formulation that relates the fracture toughness with the in situ strength of the ply implicitly assumes that a fracture process zone fully develops within the ply. This assumption, reasonable for conventional composite laminates, may not be appropriate when the ply thickness is very small or the fracture process zone very large. In the following it is shown how considering the R-curve of the material, the in situ strength for the cases when the fracture process zone cannot develop completely can be correctly computed. Closed form solutions are found for the in situ strengths, and for their maximum values that are obtained when the ply thickness approaches zero.
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关键词/主题词
In situ strength;Intralaminar R-curve;Analytical model;Thin-ply laminates;Thermoplastics;
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