RADIATION METHOD OF TEMPERATURE MEASURMENT IN THE ZONE OF LOCALIZED IMPACT LOADING

The radiation low-inertial method was developed for temperature measurment in the impact contact zone, using the pyrometer based on the non-cooled photoresistor and flexible fibre-optical cable. The pyrometer is attached to the "pneumatic gun" testing rig, which provides the collision of steel balls having the diameters up to 3 x 10-3 m and other hard particles with the specimen surface at the velocities up to 300 m/sec. The impact angles vary continiously from 0 to 90°. This method allows to measure the temperatures in the impact zone of the materials with low and high electroconductivity and is advantageous in comparison with methode using thermocouples of different types. The experimental data are obtained for some technically pure metals and structural steels at various impact energies and angles. They show the experimental possibilities of this method and have their own scientific value