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ASM Handbook

Nondestructive Evaluation of Materials

Edited by
Aquil Ahmad
Aquil Ahmad
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Leonard J. Bond
Leonard J. Bond
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ASM International
Volume
17
ISBN electronic:
978-1-62708-190-0
Publication date:
2018
Book Chapter

Surface-Excited Thermography

By
Steven M. Shepard
Steven M. Shepard
Thermal Wave Imaging, Inc.
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Published:
2018
Page range:
129 - 138
Publication history
August 21, 2018

Abstract

For most nondestructive evaluation (NDE) applications, the term thermography actually refers to surface-excited thermography (SET) that involves thermal mapping of surface temperature as heat flows from, to, or through a test object in response to excitation applied to the sample surface. This article discusses the strategies for implementing thermography for NDE, including the steady-state/whole-body approach and transient heat conduction. It describes the most common signal-processing methods, such as thermographic signal reconstruction, lock-in thermography, and pulsed-phase thermography. The article concludes with a discussion on the use of thermal methods for thermal diffusivity measurement and characterization of multilayer structures.

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Steven M. Shepard, 2018. "Surface-Excited Thermography", Nondestructive Evaluation of Materials, Aquil Ahmad, Leonard J. Bond

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