Development of an Ultrasonic Ray Model for Phased Array Ultrasonic Testing in Austenitic Weldments
Austenitic stainless steel is widely used in nuclear industry due to its high corrosive resistance and excellent creep properties over a range of temperature. However, inspection of austenitic material weldments using phased array ultrasound is not easy at all, because crystalline structure of austenitic stainless steel weldments cause deviation and splitting of the ultrasonic beams. Thus, to focusing and/or steering phased array beams in the austenitic weldments, proper time delays based on ray tracing in the anisotropic and inhomogeneous medium is needed. In this paper, we applied modified Oglivys model to describe the crystallized structure of real austenitic steel weldmens. And then, a ray tracing model is used to calculate the proper time delay and proper incident angle of linear phased array in the anisotropic and inhomogeneous material for focusing and/or steering phased array ultrasonic beams on the desired position in the weldments.
austenitic weldments ray model phased array time delay
Jing YE SungJin SONG Hak-Joon KIM
School of Mechanical Engineering, Sungkyunkwan University 300 Chunchun-dong, Jangan-gu 440-746, Kore Myung-Ho Song, Suk-Chull Kang, Sung-sik Kang, Kyungcho Kim Korea Institute of Nuclear Safety, Korea
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
983-989
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）