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Investigation of test methods for measuring compressive strength and modulus of two-dimensional carbon-carbon compositesAn experimental evaluation has been conducted to ascertain the the usefulness of two techniques for measuring in-plane compressive failure strength and modulus in coated and uncoated carbon-carbon composites. The techniques involved testing specimens with potted ends as well as testing them in a novel clamping fixture; specimen shape, length, gage width, and thickness were the test parameters investigated for both coated and uncoated 0/90 deg and +/-45 deg laminates. It is found that specimen shape does not have a significant effect on the measured compressive properties. The potting of specimen ends results in slightly higher measured compressive strengths than those obtained with the new clamping fixture. Comparable modulus values are obtained by both techniques.
Document ID
19900061071
Document Type
Conference Paper
Authors
Ohlhorst, Craig W. (NASA Langley Research Center Hampton, VA, United States)
Sawyer, James Wayne (NASA Langley Research Center Hampton, VA, United States)
Yamaki, Y. Robert (Planning Research Corp. Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
COMPOSITE MATERIALS
Meeting Information
Symposium on High Temperature Composites(Dayton, OH)
Distribution Limits
Public
Copyright
Other