SYMPOSIA PAPER Published: 01 January 2003

Ultrasonic Measurement Technique of Burning Metals in Normal and Reduced Gravity


The in situ real time measurement of the regression rate of a melting interface (RRMI) is performed by the ultrasonic measurement system reported here. The RRMI is the rate at which a solid/liquid interface (SLI) moves along a metallic rod while burning in an oxygen-enriched atmosphere and is an important flatnmability indicator. The ultrasonic transducer and associated equipment used to drive the transducer and record the echo signal is described, along with the process that transforms the acquired signals into a RRMI value. Test rods of various metals and geometric shapes were burned at several test conditions in different test facilities. The RRMI results with quantified errors are presented and reviewed. The effect of reduced gravity on burning metals is important to space-applications and RRMI results obtained in a reduced gravity environment are also presented.

Author Information

Chiffoleau, GJA
Wendell Hull and Associates, Las Cruces, NM, USA
Steinberg, TA
University of Queensland, Brisbane, QLD, Australia
Veidt, M
University of Queensland, Brisbane, QLD, Australia
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Developed by Committee: G04
Pages: 75–90
DOI: 10.1520/STP11581S
ISBN-EB: 978-0-8031-5489-6
ISBN-13: 978-0-8031-0998-8