The Dynamic Temperature Measurement Of Split Hopkinson Bar Specimens Using Small Thermocouples And Infrared Streak Photography

Two independent methods (embedded thermocouples and a commercial infrared detection system) were used to determine the temperature rise due to dynamic deformation of copper and iron specimens in a compression split Hopkinson pressure bar system. A paint with a quoted emissivity of 0.95 was used to improve the accuracy of the infrared measurements. Using this value, the two measurement methods were found to agree to within 1 K.