Location

La Jolla, CA

Start Date

1-1-1989 12:00 AM

Description

Thermal wave techniques have been successfully used for the characterization of adhesion defects of plasma-sprayed coatings on metal substrates. [1–3] With the advent of thermal wave infrared video imaging,[4–6] it is now possible to image large surface areas at video frame rates using an IR video camera. In this work we describe a novel parallel box-car imaging system, using an IR video camera and WSU-designed pixel by pixel time-gating and averaging and we demonstrate the ability of this system to detect adhesion defects in plasma-sprayed coatings on metal substrates. A particular advantage of our system is that the entire image can be obtain in parallel, thus making it a much faster technique than the conventional cw thermal wave imaging techniques.

Volume

8B

Chapter

Chapter 7: Engineered Materials

Section

Coatings

Pages

1305-1310

DOI

10.1007/978-1-4613-0817-1_163

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Parallel Box-Car Imaging of Adhesion Defects in Plasma-Sprayed Coatings

La Jolla, CA

Thermal wave techniques have been successfully used for the characterization of adhesion defects of plasma-sprayed coatings on metal substrates. [1–3] With the advent of thermal wave infrared video imaging,[4–6] it is now possible to image large surface areas at video frame rates using an IR video camera. In this work we describe a novel parallel box-car imaging system, using an IR video camera and WSU-designed pixel by pixel time-gating and averaging and we demonstrate the ability of this system to detect adhesion defects in plasma-sprayed coatings on metal substrates. A particular advantage of our system is that the entire image can be obtain in parallel, thus making it a much faster technique than the conventional cw thermal wave imaging techniques.