Location

Brunswick, ME

Start Date

1-1-1990 12:00 AM

Description

In recent years plasma-sprayed coatings and polymer coatings have found wide application in manufacturing. Although the quality of the coatings improved over the years, there is a need for reliable NDE techniques to assess the quality and test the integrity of these coatings. Most existing techniques are not suitable for real-time applications. The introduction of synchronous thermal wave video imaging techniques using infrared cameras[1, 2] has made it possible to make images of thermal wave phenomena in almost real-time. In this work we describe the application of a pulsed heating and synchronous infrared thermal wave detection technique to image sub-surface defects in plasma-sprayed thermal barrier coatings and polymer coatings on metal substrates.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

9B

Chapter

Chapter 9: Manufacturing and Process Control

Pages

2001-2008

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Infrared Thermal-Wave Studies of Coated Surfaces

Brunswick, ME

In recent years plasma-sprayed coatings and polymer coatings have found wide application in manufacturing. Although the quality of the coatings improved over the years, there is a need for reliable NDE techniques to assess the quality and test the integrity of these coatings. Most existing techniques are not suitable for real-time applications. The introduction of synchronous thermal wave video imaging techniques using infrared cameras[1, 2] has made it possible to make images of thermal wave phenomena in almost real-time. In this work we describe the application of a pulsed heating and synchronous infrared thermal wave detection technique to image sub-surface defects in plasma-sprayed thermal barrier coatings and polymer coatings on metal substrates.