Paper Title:
Influence of the Material and Thickness of the Specimen on an Infrared Stress Image
  Abstract

The thickness dependency of the temperature image obtained by an infrared thermography was investigated using specimens with three kinds of materials and four kinds of the thickness of the specimen. Only the sum of the principal stresses which is the first invariant of stress tensor is measured, and it is impossible to measure individual stress components directly. Then, the infrared hybrid method was developed to separate individual stress components. Although the form of the contour line of low stress side differs greatly, the distribution form of high stress side was considerably alike. The stress intensity factor of material with low thermal conductivity can be estimated with high accuracy by the infrared hybrid method. On the crack problem, it was elucidated that the influence of thermal conduction is large and an inverse problem analysis is required.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
1641-1646
DOI
10.4028/www.scientific.net/KEM.261-263.1641
Citation
K. Machida, M. Gheni, "Influence of the Material and Thickness of the Specimen on an Infrared Stress Image", Key Engineering Materials, Vols. 261-263, pp. 1641-1646, 2004
Online since
April 2004
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Price
$32.00
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