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.