Compression buckling behavior of laminated composite panels

Parida, BK and Prakash, Raghu V and Ghosal, AK and Mangalgiri, PD and Vijayaraju, K (1996) Compression buckling behavior of laminated composite panels. In: Proceedings of the 13th ASTM Symposium, 20-21 May 1996, Orlando, United States.

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Abstract

Compression buckling tests on 6.0-mm-thick carbon fiber composite (CFC) panels are described for which a reasonably good simulation of the boundary condition was achieved, especially under the simple supported condition. Carefully designed test fixtures that provided excellent alignment of the panel with the loading axis and adequate lateral stiffness for edge supports during buckling of the CFC panels were used to achieve this goal. Both simply supported and clamped boundary conditions are studied. Tests in room-temperature-as-received (RT/AR) and hot-wet (H/W) conditions are described. A buckling test on a simply supported panel with prior moisture conditioning was performed under the H/W condition with an environmental test chamber mounted on the test rig to prevent any loss of moisture during the test at 100 C and not less than 85 percent relative humidity. Based on these results, a test procedure was developed to identify buckling loads through measurement of out-of-plane displacements rather than relying solely upon longitudinal strata measurement.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Carbon fiber composite;Longitudinal strata management
Subjects: ASTRONAUTICS > Spacecraft Design, Testing and Performance
Division/Department: Structural Integrity Division, Structural Integrity Division, Structural Integrity Division, Other, Other
Depositing User: M/S ICAST NAL
Date Deposited: 19 Sep 2006
Last Modified: 24 May 2010 09:50
URI: http://nal-ir.nal.res.in/id/eprint/2760

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