Artificial disbonds for calibration of transient thermography inspection of thermal barrier coating systems

Grzegorz Ptaszek, Peter Cawley, Darryl Almond, Simon Pickering

Research output: Contribution to journalArticle

Abstract

Transient thermography is commonly used for the detection of disbonds in thermal barrier coatings (TBC). As for other NDT techniques, reference test specimens are required for calibration, but unfortunately, real disbonds are very difficult to use because it is difficult to control their size, and larger ones tend to spall. Flat bottomed holes are commonly used, but these over-estimate the thermal contrast obtained for a defect of a given diameter. This paper quantifies the difference, and proposes an artificial disbond.
Original languageEnglish
Pages (from-to)491-498
Number of pages8
JournalAIP Conference Proceedings
Volume1430
DOIs
Publication statusPublished - 2012
EventReview of Progress in Quantitative Nondestructive Evaluation - Burlington, VT, USA United States
Duration: 16 Jul 201121 Jul 2011

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