Characterization of crack growth resistance under cyclic loading in the presence of an unbridged defect in fiber-reinforced titanium metal matrix composites
Conference
·
OSTI ID:536398
- Univ. of Birmingham, Edgbaston (United Kingdom)
This paper considers the experimental characterization of crack growth from unbridged defects in fiber-reinforced titanium metal matrix composites subjected to cyclic loading by the use of fracture mechanics parameters. The conditions under which parameters such as the nominal applied stress intensity range, {Delta}K{sub app}, the nominal maximum stress intensity factor, K{sub max}, and the effective stress intensity range, {Delta}K{sub eff}, are of use, and their experimental measurements are considered. Effects of fiber fracture, stress intensity factor range, mean stress, loading configuration (bending versus tension), test temperature, crack size, crack shape, and fiber-matrix interfacial strength on fatigue crack growth resistance are highlighted. The experimental determination of crack arrest in such composites is outlined.
- OSTI ID:
- 536398
- Report Number(s):
- CONF-940399--; ISBN 0-8031-2039-7
- Country of Publication:
- United States
- Language:
- English
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