Development of a nondestructive evaluation technique for degraded thermal barrier coatings using microwave

M. Sayar, K. Ogawa, T. Shoji

研究成果: Conference contribution

抜粋

Thermal barrier coatings have been widely used in gas turbine engines in order to protect substrate metal alloy against high temperature and to enhance turbine efficiency. Currently, there are no reliable nondestructive techniques available to monitor TBC integrity over lifetime of the coating. Hence, to detect top coating (TC) and TGO thicknesses, a microwave nondestructive technique that utilizes a rectangular waveguide was developed. The phase of the reflection coefficient at the interface of TC and waveguide varies for different TGO and TC thicknesses. Therefore, measuring the phase of the reflection coefficient enables us to accurately calculate these thicknesses. Finally, a theoretical analysis was used to evaluate the reliability of the experimental results.

元の言語English
ホスト出版物のタイトルReview of Progress in QuantitativeNondestructive Evaluation
ページ1536-1542
ページ数7
DOI
出版物ステータスPublished - 2008 3 24
イベント34th Annual Review of Progress in Quantitative Nondestructive Evaluation - Golden, CO, United States
継続期間: 2007 7 222007 7 27

出版物シリーズ

名前AIP Conference Proceedings
975
ISSN(印刷物)0094-243X
ISSN(電子版)1551-7616

Other

Other34th Annual Review of Progress in Quantitative Nondestructive Evaluation
United States
Golden, CO
期間07/7/2207/7/27

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • これを引用

    Sayar, M., Ogawa, K., & Shoji, T. (2008). Development of a nondestructive evaluation technique for degraded thermal barrier coatings using microwave. : Review of Progress in QuantitativeNondestructive Evaluation (pp. 1536-1542). (AIP Conference Proceedings; 巻数 975). https://doi.org/10.1063/1.2902618