SYMPOSIA PAPER Published: 01 January 1983
STP36205S

Effect of Load Introduction in Compression Testing of Composite Laminates

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Compression testing of composite materials is affected by the manner in which the compressive load is introduced. Two such effects are studied in this paper: (a) the constrained edge effect, in which transverse expansion of the edges is prevented while the axial load is introduced, and (b) nonuniform gripping, as manifested by inplane bending of the test specimen. The principle of minimum complementary energy is used to develop an analytical model that quantifies these two effects upon the measured elastic properties of laminated composites. Numerical results are presented for selected high-strength graphite/epoxy composites.

Author Information

Reiss, R
Howard University, Washington, D.C.
Yao, T-M
University of Iowa, Iowa City, Iowa
Clark, RK
NASA Langley Research Center, Va.
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Details
Developed by Committee: E28
Pages: 200–220
DOI: 10.1520/STP36205S
ISBN-EB: 978-0-8031-4874-1
ISBN-13: 978-0-8031-0248-4