Double pulse infrared thermography

被引：36

作者：

Maldague, X ^{[1
]}

Ziadi, A ^{[1
]}

Klein, M ^{[1
]}

机构：

[1] Univ Laval, Dept Elect & Comp Engn, Ste Foy, PQ G1K 7P4, Canada

来源：

NDT & E INTERNATIONAL | 2004年 / 37卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

thermal contrast; defect detection; heating pulse; thermal diffusivity;

D O I：

10.1016/j.ndteint.2004.03.003

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper we propose a simple enhancing protocol for pulsed infrared thermography. The method is based on stimulating the specimen with two heating pulses separated by a short time interval delta. This approach was tested on several specimens of low and high thermal diffusivity and showed to provide higher thermal contrasts when an optimum interval delta is chosen. The observed thermal contrast improvement is about a few percentage values. Lastly, a Matlab(TM) procedure is also proposed to link this interval to the thermal diffusivity of the specimen. In the paper, the method is presented including theoretical basis, simulation and experimental results. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：559 / 564

页数：6

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