Thermal measurements using ultrasonic acoustical pyrometry

Peter L Schmidt; D Greg Walker; Donald J Yuhas; Mark M Mutton

doi:10.1016/j.ultras.2013.12.004

Thermal measurements using ultrasonic acoustical pyrometry

Ultrasonics. 2014 Apr;54(4):1029-36. doi: 10.1016/j.ultras.2013.12.004. Epub 2013 Dec 17.

Authors

Peter L Schmidt¹, D Greg Walker², Donald J Yuhas³, Mark M Mutton³

Affiliations

¹ Department of Engineering Technology, University of North Carolina at Charlotte Charlotte, NC 28223, United States. Electronic address: pschmid3@uncc.edu.
² Department of Mechanical Engineering, Vanderbilt University Nashville, TN 37235, United States.
³ Industrial Measurement Systems, Incorporated, 2760 Beverly Drive, Suite 4, Aurora, IL 60502, United States.

PMID: 24374154
DOI: 10.1016/j.ultras.2013.12.004

Abstract

Reflections from geometric discontinuities can be used with ultrasonic energy to predict the temperature of an interface where classical temperature measurement techniques are impractical because of physical access limitations or harsh environmental conditions. Additionally, these same ultrasonic measurements can be used with inversion methods commonly applied to ill-posed heat transfer problems to increase the accuracy of the measurement of surface temperature or heat flux at the surface of interest. Both methods for determining surface temperature are presented, along with a comparison of results both from a verification example and using data gathered in a field test of the methods. The results obtained with these two methods are shown to be in good agreement with an empirical relationship used in the design of large caliber guns.

Keywords: Heat flux measurement; Remote sensing; Temperature measurement.