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

Grzegorz Ptaszek; Peter Cawley; Darryl Almond; Simon Pickering

doi:10.1063/1.4716267

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

Grzegorz Ptaszek, Peter Cawley, Darryl Almond, Simon Pickering

Department of Mechanical Engineering

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	491-498
Number of pages	8
Journal	AIP Conference Proceedings
Volume	1430
DOIs	https://doi.org/10.1063/1.4716267
Publication status	Published - 2012
Event	Review of Progress in Quantitative Nondestructive Evaluation - Burlington, VT, USA United States Duration: 16 Jul 2011 → 21 Jul 2011

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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. ",

author = "Grzegorz Ptaszek and Peter Cawley and Darryl Almond and Simon Pickering",

year = "2012",

doi = "10.1063/1.4716267",

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AU - Pickering, Simon

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AB - 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.

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ER -

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

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