Title

Thermal Wave Imaging Application In Thermal Barrier Coatings

Abstract

Thermal wave imaging (TWI) is a promising non-destructive evaluation (NDE) technique for life assessment and health monitoring of thermal barrier coatings (TBCs) extensively used for advanced gas turbine engines. In this study, 9 specimens of air plasma sprayed (APS) TBCs were thermally cycled to a peak temperature of 1150°C (2100°F) with dwell time of 10 hours. During thermal cyclic oxidation, TBC specimens were periodically evaluated non-destructively with TWI, and selected specimens were removed from thermal cycling for microstructural analysis by scanning electron microscopy (SEM). Results from TWI were correlated to the microstructural development in APS TBCs. TWI enabled the detection of subsurface damage initiation and progression in APS TBCs.

Publication Date

12-1-2005

Publication Title

Ceramic Engineering and Science Proceedings

Volume

26

Issue

3

Number of Pages

113-119

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

32044443661 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/32044443661

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