Journal Published Online: 01 October 1996
Volume 18, Issue 4

Unidirectional Composite Compression Strengths Obtained by Testing Cross-Ply Laminates



The strength and stiffness of a unidirectional AS4/3501-6 carbon/epoxy composite material system was experimentally determined using tabbed and untabbed cross-ply specimens tested in established shear- and end-loaded compression test fixtures. Four different analysis techniques were used to predict the unidirectional lamina strength from the measured cross-ply specimen strength. The compressive strength and failure mode of the cross-ply laminates showed a desirable immunity to fabrication techniques, testing conditions, and fixture type. Several special aspects of using cross-ply laminates, including isolating the 0° laminae, free-edge effects, and stress concentrations induced by end tabs, are discussed. The effects of these topics on the cross-ply laminates used in the present study are compared to conventional unidirectional specimens.

Author Information

Welsh, JS
University of Wyoming, Laramie, Wyoming
Adams, DF
University of Wyoming, Laramie, Wyoming
Pages: 8
Price: $25.00
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Stock #: CTR10109J
ISSN: 0884-6804
DOI: 10.1520/CTR10109J