High-speed infrared thermal measurements of impacted metallic solids

Abstract

ABSTRACT: The methodology used to measure transient temperature changes in impacted solids, using high-speed infrared detectors, is presented and discussed thoroughly. The various steps leading to a reliable measurement, namely selection of the sensing device, calibration of the setup, interfacing with the impact apparatus (Kolsky bar), and data reduction are presented. The outcome of the above methodology is illustrated in terms of the Taylor-Quinney factor, a well-known measure of the efficiency of the thermomechanical conversion. • Selection of infrared detectors. • Importance of the calibration procedure. • Determination of the Taylor-Quinney factor.

Keywords

• Taylor-Quinney factor
• Thermomechanics
• High-rate deformation
• Kolsky bar