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

Abstract

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.

Inventors:
 [1];  [2]
  1. Westmont, IL
  2. Downers Grove, IL
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
875031
Patent Number(s):
US 6517238
Assignee:
The United States of America as represented by the United States Department (Washington, DC)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
thermal; imaging; measurement; lateral; diffusivity; non-invasive; material; defect; detection; method; determining; sample; heat; pulse; oriented; orthogonal; coordinate; infrared; camera; computer; digital; frame; grabber; data; acquisition; processing; software; mathematical; model; capable; finite; boundaries; nondestructive; detecting; locating; cracks; mathematical model; thermal imaging; /374/250/702/

Citation Formats

Sun, Jiangang, and Deemer, Chris. Thermal imaging measurement of lateral diffusivity and non-invasive material defect detection. United States: N. p., 2003. Web.
Sun, Jiangang, & Deemer, Chris. Thermal imaging measurement of lateral diffusivity and non-invasive material defect detection. United States.
Sun, Jiangang, and Deemer, Chris. 2003. "Thermal imaging measurement of lateral diffusivity and non-invasive material defect detection". United States. https://www.osti.gov/servlets/purl/875031.
@article{osti_875031,
title = {Thermal imaging measurement of lateral diffusivity and non-invasive material defect detection},
author = {Sun, Jiangang and Deemer, Chris},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/875031}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

Works referenced in this record:

The Application of Thermal Diffusivity Imaging to Sic-Fiber- Reinforced Silicon Nitride
book, January 1993


Novel Measurement of Anisotropie Thermal Diffusivity
book, January 1998