Journal Published Online: 01 September 2000
Volume 28, Issue 5

Testing of Thermal Imagers for Nondestructive Thermal Testing Applications



One of the important areas of application of commercial thermal imagers is nondestructive thermal testing. An analysis of two standards published by the American Society for Testing and Materials describing measurement procedures of the minimum resolvable temperature difference (MRTD) and the minimum detectable temperature difference (MDTD) was made in this paper. It was shown that in the case of modern thermal imagers, the measurement results of these parameters carried out according to the ASTM recommendations may be unreliable. Proposals to update the standards and to enable accurate measurement of the parameters mentioned above are presented. A laboratory setup for measurement of the MRTD and the MDTD that fulfills requirements of the proposals is described. Measurement results of the parameters for a modern commercial imager according to updated procedures are presented.

Erratum to this paper appears in 28(6).

Author Information

Chrzanowski, K
Military University of Technology, Warsaw, Poland
Fischer, J
Physikalisch-Technische Bundesanstalt, Berlin, Germany
Gutschwager, B
Physikalisch-Technische Bundesanstalt, Berlin, Germany
Wrona, W
National Academy of Defense, Warsaw, Poland
Pages: 8
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Stock #: JTE12127J
ISSN: 0090-3973
DOI: 10.1520/JTE12127J