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Temperature dependence of the propagation speed of a longitudinal wave in different solids for use as a wedge material in an extreme-temperature-resistant ultrasonic transducer

  • In special cases of angle beam ultrasonic measurement – e.g. defect detection in hot solids as well as flow measurement of liquid gases or energy storage mediums [1] – the applied transducer has to withstand extreme temperatures. Since the irradiation angle into the specific material is determined not only by wedge design, but also by the speed of sound in both the wedge material and the tested object, the developer must take into account the speed of the wave propagation in a wedge material over the whole temperature range of transducers application. In this study we investigate the temperature dependence of the speed of longitudinal wave propagation in 10 different materials in the range from -200 °C to 400 °C. The investigated materials belong to different material classes (ceramics, glass, as well as ferrous and non-ferrous metals) and are all temperature-resistant up to at least 600 °C, and therefore applicable as wedge materials in an ultrasonic transducer for use at extreme temperatures.

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Author: Oleg ShapovalovORCiD, Mate GaalORCiD, Gerald HönigORCiD, Thomas GradtORCiD, Sabine WeißORCiDGND
URL:http://publications.rwth-aachen.de/record/770364/files/770364.pdf
DOI:https://doi.org/10.18154/RWTH-CONV-239953
ISBN:978-3-939296-15-7
ISSN:2226-7808
ISSN:2415-1599
Title of the source (English):Proceedings of the 23rd International Congress on Acoustics : integrating 4th EAA Euroregio 2019 : 9-13 September 2019 in Aachen, Germany
Place of publication:Aachen
Editor: Martin Ochmann, Michael Vorländer, Janina FelsORCiD
Document Type:Conference publication not peer-reviewed
Language:English
Year of publication:2019
Tag:Longitudinal Wave; Speed of sound; Temperature; Ultrasonic Transducer
Volume/Year:2019
First Page:4754
Last Page:4760
Faculty/Chair:Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Metallkunde und Werkstofftechnik
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