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Stress analysis of a barb test for thermal barrier coatings

✍ Scribed by Ning-Yuan Cao; Yutaka Kagawa; Yu-Fu Liu

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
673 KB
Volume
202
Category
Article
ISSN
0257-8972

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✦ Synopsis

Stress distributions in a barb pullout specimen prepared from the thermal barrier coating (TBC)/substrate structure are analyzed by the finite element method. Contribution of thermal stresses and applied stresses is included in the computations. Interfacial stress singularity at the test support edge is evaluated and effects of various Young's modulus ratios between the TBC layer and substrate are shown. The results help to understand the mechanical behavior in the barb test.

πŸ“œ SIMILAR VOLUMES

Finite element analysis of a barb test f
Finite element analysis of a barb test for thermal barrier coating delamination toughness measurement
✍ Ning-Yuan Cao; Yu-Fu Liu; Yutaka Kagawa πŸ“‚ Article πŸ“… 2008 πŸ› Elsevier Science 🌐 English βš– 690 KB

The present study analyzes interface delamination behavior in the thermal barrier coating (TBC)/substrate system during a barb pullout test when the delamination crack is short. With the use of finite element analysis, strain energy release rates and phase angles of the delamination crack are obtain