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Residual strength of composite laminates subjected to tensile-compressive fatigue loading (1990)

Nelson, H. G. ; Rotem, Assa

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Publication Date: 2011-08-19

Description: Results are presented on the measurements of the residual strengths of T300/934 graphite epoxy laminates, in tension and in compression, after the samples were exposed to tension-compression fatigue loading (R = -1). Four laminate ocnfigurations were tested: unidirectional, cross-ply, angle-ply, and quasi-isotropic. It was found that the fatigue behavior of laminates was dependent on the quasi-static strengths and the specific structure of the laminate. No direct correlation was found between remaining residual strengths and the percentage of average fatigue life. However, a correlation scheme was developed for the individual specimen under test, based on a cumulative damage model and a stiffness change of the material.

Keywords: COMPOSITE MATERIALS

Type: Journal of Composites Technology and Research (ISSN 0885-6804); 12; 76-84

Format: text

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