Share Email Print

Proceedings Paper

Temperature dependence of the graybody approximation to emissivity for some common materials
Author(s): Robert P. Madding
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Modern infrared imaging radiometric cameras typically measure over a nominal waveband within one of two atmospheric windows, 8-12 or 3-5 micrometers. As such, they must assume targets are graybodies to calculate their temperatures. The IR camera can be used to measure target emissivity, enhancing the integrity of the graybody approximation, at least near the temperature at which the emissivity was measured. For realbodies, spectrally nonuniform emitters, the graybody emissivity approximation will be temperature dependent. This paper models the graybody emissivity temperature dependence for a variety of materials whose emissivity may be easily measured near room temperature whilst the application temperatures may be several hundred degrees Celsius.

Paper Details

Date Published: 15 March 2002
PDF: 7 pages
Proc. SPIE 4710, Thermosense XXIV, (15 March 2002); doi: 10.1117/12.459601
Show Author Affiliations
Robert P. Madding, FLIR Systems, Inc. (United States)

Published in SPIE Proceedings Vol. 4710:
Thermosense XXIV
Xavier P. Maldague; Andres E. Rozlosnik, Editor(s)

© SPIE. Terms of Use
Back to Top