title: Thermal measurements using ultrasonic acoustical pyrometry.
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.
authors.affiliation: Department of Engineering Technology, University of North Carolina at Charlotte Charlotte, NC 28223, United States. Electronic address: pschmid3@uncc.edu.
authors.forename: Peter L
authors.initials: PL
authors.lastname: Schmidt
authors.affiliation: Department of Mechanical Engineering, Vanderbilt University Nashville, TN 37235, United States.
authors.forename: D Greg
authors.initials: DG
authors.lastname: Walker
authors.affiliation: Industrial Measurement Systems, Incorporated, 2760 Beverly Drive, Suite 4, Aurora, IL 60502, United States.
authors.forename: Donald J
authors.initials: DJ
authors.lastname: Yuhas
authors.affiliation: Industrial Measurement Systems, Incorporated, 2760 Beverly Drive, Suite 4, Aurora, IL 60502, United States.
authors.forename: Mark M
authors.initials: MM
authors.lastname: Mutton
keywords: Heat flux measurement; Remote sensing; Temperature measurement