Influence of grain size and rolling direction on stress measurement by ultrasonic surface wave (part 2)
Conference proceedings article
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
ไม่พบข้อมูลที่เกี่ยวข้อง
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Preedawiphat P., Prateepasen A., Noipitak M.
ผู้เผยแพร่: Trans Tech Publications
ปีที่เผยแพร่ (ค.ศ.): 2013
Volume number: 717
หน้าแรก: 221
หน้าสุดท้าย: 226
จำนวนหน้า: 6
ISBN: 9783037857274
นอก: 1022-6680
eISSN: 1662-8985
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
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.
คำสำคัญ
Rolling direction, Stress measurement, Ultrasonic surface wave