Ultrasonic high-temperature sensors: past experiments and prospects for future use.
by Laurie, M.; Magallon, D.; Rempe, J.; Wilkins, Charles L.; Pierre, J.; Marquie, C.; Eymery, S.; Morice, R.
A review. Ultrasonic thermometry sensors (UTS) have been intensively studied in the past to measure temps. from 2080 K to 3380 K. This sensor, which uses the temp. dependence of the acoustic velocity in materials, was developed for expts. in extreme environments. Its major advantages, which are (a) capability of measuring a temp. profile from multiple sensors on a single probe and (b) measurement near the sensor material m.p., can be of great interest when dealing with online monitoring of high-temp. safety tests. Ultrasonic techniques were successfully applied in several severe accident related expts. With new developments of alternative materials, this instrument may be used in a wide range of exptl. areas where robustness and compactness are required. Long-term irradn. expts. of nuclear fuel to extremely high burn-ups could benefit from this previous experience. After an overview of UTS technol., this article summarizes exptl. work performed to improve the reliability of these sensors. The various designs, advantages, and drawbacks are outlined and future prospects for long-term high-temp. irradn. expts. are discussed. [on SciFinder(R)]
- International Journal of Thermophysics
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