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Multi-Channel Pyrometry and Thermography - A Non-Contact Method for the Determination of the Spectral Emissivity of High-Temperature Materials

: Vetterlein, T.; Meyendorf, N.; Walle, G.

Green, R.E.:
Nondestructive Characterization of Materials VIII
New York: Plenum Press, 1998
ISBN: 0-306-45900-0
International Symposium on Nondestructive Characterization of Materials <8, 1997, Boulder/Colo.>
Conference Paper
Fraunhofer IZFP ()
emissivity; high-temperatures materials; multi-channel techniques; pyrometry; thermography

Materials for space technology and also for other high-temperature applications have to fulfil specific requirements, e.g. a definite behaviour of spectral emission coefficient is necessary. The aim of the experiments was to measure the spectral emissivity of the material for temperatures above 1500 øC. The solution of this task was an noncontact multi-channel pyrometric and thermographic technique which is described below.