Failure of a fiber composite lamina under three-dimensional stresses [electronic resource].

Published:: Washington, D.C : United States. Dept. of Energy. Office of the Assistant Secretary for Defense Programs, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 191 Kilobytes pages : digital, PDF file
Additional Creators:: Lawrence Livermore National Laboratory, United States. Department of Energy. Office of the Assistant Secretary for Defense Programs, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

The efficient use of thick-section fiber composites requires a proven three-dimensional failure model. Numerous failure criteria have been proposed, but the lack of critical experimental results makes it difficult to assess the accuracy of these models. It is shown that the various predictions for failure of a lamina due to the simple state of uniaxial stress plus superposed hydrostatic pressure are disparate. These differences are sufficient to allow evaluation of failure criteria using data that has the normal scatter found for composite materials. A high-pressure test system for fiber composites is described and results for the effects of pressure on the transverse and longitudinal compression strengths of a carbon fiber/epoxy lamina are discussed. Results are compared with a few representative failure models.

Report Numbers:

E 1.99:ucrl-jc-135664
ucrl-jc-135664

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Note:

Published through SciTech Connect.
08/31/1999.
"ucrl-jc-135664"
ASME IMECE '99, Symposium on Thick Composites for Load-Bearing Structures, Nashville, TN (US), 11/14/1999--11/19/1999.
DeTeresa, S J.

Funding Information:

W-7405-ENG-48

View MARC record | catkey: 14106964