Influence of Grain Size and Rolling Direction on Stress Measurement by Ultrasonic Surface Wave (Part 2)

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, 850°C, 980°C and 1160°C). 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.

• Periodical: Advanced Materials Research (Volume 717)
• Pages: 221-226
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.717.221
• Online since: July 2013
• Authors: Pavaret Preedawiphat, Asa Prateepasen, Mai Noipitak
• Keywords: Grain Size, Rolling Direction, Stress Measurement, Ultrasonic Surface Wave

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