RESEARCH PAPERS: Radiative Transfer

Surface Temperature Measurement Using Infrared Radiometer by Applying a Pseudo-Gray-Body Approximation: Estimation of Radiative Property for Metal Surface

[+] Author and Article Information
T. Inagaki, Y. Okamoto

Department of Mechanical Engineering, University of Ibaraki, 12-1 Nakanarusawa 4 Chome, Hitachi, Ibaraki, 316 Japan

J. Heat Transfer 118(1), 73-78 (Feb 01, 1996) (6 pages) doi:10.1115/1.2824070 History: Received May 01, 1994; Revised April 01, 1995; Online December 05, 2007


The visualization technique using an infrared radiometer has been widely used to estimate a two-dimensional temperature distribution on a surface. We have previously proposed various characteristics of the radiative properties for nonmetal surfaces on which the gray-body approximation can be used. However, the gray-body approximation can not be applied to glossy metal surfaces, because the influence of the reflected energy on the temperature measurement becomes severe. A pseudo-gray-body approximation is therefore proposed to estimate a temperature field on metal surfaces and its applicability is confirmed using an infrared radiometer with three detection wavelength bands.

Copyright © 1996 by The American Society of Mechanical Engineers
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