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Proceedings Paper

Test method for fatigue crack propagation along interface between ceramic coating and substrate
Author(s): Y. Mutoh; Y. Miyashita; J. Q. Xu; D. Higuchi; M. Ohki
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Paper Abstract

Ceramic thermal barrier coatings (TBC) are increasing applied to high temperature structures such as gas-turbine components. Spalling is one of serious damage mode of TBC, which includes fatigue crack initiation and propagation along the interface. In the present study, a new test method for realizing fatigue crack initiation and propagation along the interface has been successfully developed. From the results of fatigue crack growth test and boundary element method analysis, it has been found that is K1 equals (root) K12 + K22 a suitable parameter for evaluating crack growth behavior of an interface crack under mix mode.

Paper Details

Date Published: 13 June 2001
PDF: 6 pages
Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); doi: 10.1117/12.429587
Show Author Affiliations
Y. Mutoh, Nagaoka Univ. of Technology (Japan)
Y. Miyashita, Niigata Univ. (Japan)
J. Q. Xu, Niigata Univ. (Japan)
D. Higuchi, Niigata Univ. (Japan)
M. Ohki, Niigata Univ. (Japan)

Published in SPIE Proceedings Vol. 4317:
Second International Conference on Experimental Mechanics
Fook Siong Chau; Chenggen Quan, Editor(s)

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