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High temperature ultrasonic sensor for the simultaneous measurement of viscosity and temperature of melts

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5 Author(s)
Balasubramaniam, Krishnan ; Department of Aerospace Engineering and Mechanics, Mississippi State University, Mississippi State, Mississippi 39762 ; Shah, Vimal V. ; Costley, R.D. ; Boudreaux, Gary
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An ultrasonic sensor that simultaneously measures temperature and viscosity of molten materials at very high temperature is described. This sensor has applications as a process monitor in melters. The sensor is based on ultrasonic shear reflectance at the solid–melt interface. A delay line probe is constructed using refractory materials. A change in the time of flight within the delay line is used to measure the temperature. The results obtained from this sensor on various calibration glass samples demonstrate a measurement range of 100–20 000 P for the viscosity and 25–1500 °C for the temperature. © 1999 American Institute of Physics.

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Review of Scientific Instruments  (Volume:70 ,  Issue: 12 )