Influence of grain size and rolling direction on stress measurement by ultrasonic surface wave (part 2)
Conference proceedings article
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Publication Details
Author list: Preedawiphat P., Prateepasen A., Noipitak M.
Publisher: Trans Tech Publications
Publication year: 2013
Volume number: 717
Start page: 221
End page: 226
Number of pages: 6
ISBN: 9783037857274
ISSN: 1022-6680
eISSN: 1662-8985
Languages: English-Great Britain (EN-GB)
Abstract
Stress measurement based on the change of ultrasonic surface wave has been accepted to find out residual or existing stress on material. This paper shows the effect of rolling direction and grain size of material on surface wave velocity and energy attenuation. Different grain and rolling direction of material type SS 400, S420 and A516 were selected to test its effect. Three grain sizes of each material were varied by normalizing process at three temperature range (no heating, 850ฐC, 980ฐC and 1160ฐC). Through transmission ultrasonic surface wave, frequencies 2.25 and 5 MHz, were applied and recorded the velocity and attenuation of the response. The results show that rolling direction and grain size slightly effect on attenuation of ultrasonic wave but unaffected on sound velocity. Its outcome was compared with the effect of the material coating. ฉ (2013) Trans Tech Publications, Switzerland.
Keywords
Rolling direction, Stress measurement, Ultrasonic surface wave
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