Location

La Jolla, CA

Start Date

1-1-1989 12:00 AM

Description

In recent years a variety of NDT techniques utilizing an IR camera have been developed (for example [1–4]). In the synchronous heating method [3] an IR camera is used for detecting the surface temperature rise caused by a scanning laser beam. The movement of the heating beam is synchronized with the deflection mirror of the IR camera so the distance between the object point of the camera and the heating point remains constant. This measurement set-up allows rapid inspection of thin coatings that are otherwise problematic from the NDT point of view. In this paper we have computed numerically the temperature profile produced by a laser beam when it is scanned over the surface of a defective sample.

Volume

8B

Chapter

Chapter 7: Engineered Materials

Section

Coatings

Pages

1321-1328

DOI

10.1007/978-1-4613-0817-1_165

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Delamination and Crack Detection by the Synchronous Heating Method: Theoretical Aspects

La Jolla, CA

In recent years a variety of NDT techniques utilizing an IR camera have been developed (for example [1–4]). In the synchronous heating method [3] an IR camera is used for detecting the surface temperature rise caused by a scanning laser beam. The movement of the heating beam is synchronized with the deflection mirror of the IR camera so the distance between the object point of the camera and the heating point remains constant. This measurement set-up allows rapid inspection of thin coatings that are otherwise problematic from the NDT point of view. In this paper we have computed numerically the temperature profile produced by a laser beam when it is scanned over the surface of a defective sample.