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Thermal imaging measurement of lateral diffusivity and non-invasive material defect detection

United States Patent

February 11, 2003
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A system and method for determining lateral thermal diffusivity of a material sample using a heat pulse; a sample oriented within an orthogonal coordinate system; an infrared camera; and a computer that has a digital frame grabber, and data acquisition and processing software. The mathematical model used within the data processing software is capable of determining the lateral thermal diffusivity of a sample of finite boundaries. The system and method may also be used as a nondestructive method for detecting and locating cracks within the material sample.
Sun; Jiangang (Westmont, IL), Deemer; Chris (Downers Grove, IL)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 761,732
January 18, 2001
U.S. GOVERNMENT RIGHTS The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the U.S. Department of Energy and University of Chicago.