A novel technique for the measurement of Elastic Moduli of materials as well as measurement of temperature gradients using ultrasonic waveguides is described here. The range of temperature measurement was from room temperature to maximum utility temperature of waveguides or maximum measurable value of thermocouple temperature, typically beyond 1000°C. In this work, thermocouple wires have been ...

A novel two-thermocouple sensor characterisation method for use in variable velocity flow environments is described. A difference equation method, recently developed by the authors for constant velocity flow applications, is extended to accommodate variable velocity flows using polynomial parameter fitting on a sliding data window. In particular, by using a novel difference equation formulation...

A stable, readily constructable thermocouple probe has been developed for determining absolute sound levels in ultrasonic fields in liquid media. This paper includes criteria for design of such probes •nd a discussion of experimental measurements made with such a device. It is a consequence of the method that if the sound intensity at an appropriate size thermocouple junction imbedded in an abs...