A review of the experimental techniques for the measurement of heat and temperatures generated in some manufacturing processes and tribology

Several techniques have been developed over time for the measurement of hea t and the temperatures generated in various manufacturing processes and tri bological applications. They include: (1) thermocouples - the embedded ther mocouple and the dynamic thermocouple (or the chip-tool thermocouple in the case of cutting), (2) infra-red photography; (3) infrared optical pyromete rs, (4) thermal paints, (5) materials of known melting temperatures, either in the powder form, or, as a thin film, and (6) change in microstructure w ith temperature in the case of high-speed steel tools, to name some. Each t echnique has its own advantages and disadvantages. The appropriate techniqu e for a given thermal problem depends on the situation under consideration, such as the ease of accessibility, spot size, dynamics of the situation, a ccuracy needed, cost of instrumentation, advancements in technology. In thi s paper, these techniques are briefly reviewed with pros and cons on their application for a given situation. (C) 2001 Elsevier Science Ltd. All right s reserved.