FIBER-OPTIC THERMOMETRY AND ITS APPLICATION

G. F. Gornostaev, G. A. Frolov,
V. V. Pasichnyi, and G. V. Tkachenko

UDC 536.3:681.586.5

The design of a distributed fiber-optic sensor of radiation 
heat flow (RHF) is presented. A measuring technique has been developed 
and results of measuring the "effective" transmission coefficient 
of an uncladded fiber under its lateral illumination have been obtained. 
An algorithm for measuring the RHF supplied in the process of testing 
specimens of materials on the radiant heating facility is proposed. 
Testing experiments have been performed and a good correlation between 
the readings of the distributed RHF sensor and the temperature in 
the specimens of materials measured by thermocouples has been observed.

I. N. Frantsevich Institute for Problems of Material 
Science, NAS of Ukraine, 3 Krzhizhanovskii Str., Kiev, 03142; email: 
g_frolov@nbi.com.ua. Translated from Inzhenerno-Fizicheskii Zhurnal, 
Vol. 80, No. 2, pp. 180-185, March-April, 2007. Original article 
submitted July 5, 2005; revision submitted December 12, 2005.