Evaluation of Thickness Reduction in Steel Plate by Using SH-EMATs

被引：0

作者：

Lee, Jin-Hyuk ^{[1
]}

Park, Ik-Keun ^{[1
]}

Kim, Yong-Kwon ^{[1
]}

Kim, Dae-Hyun ^{[1
]}

机构：

[1] Seoul Natl Univ Technol, Dept Mech Engn, Seoul 139743, South Korea

来源：

JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING | 2011年 / 31卷 / 01期

关键词：

Shear Horizontal Ultrasonic Wave(SH wave); Electromagnetic Acoustic Transducer(EMAT); Thickness Reduction;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An electromagnetic acoustic transducer(EMAT) is a non-contact transducer which can transmit the ultrasonic guided waves into specimens without couplant. And it can easily generate specific guided waves such as SH(shear horizontal) or Lamb waves by altering the design of coil and magnet. In this study, the SH wave, which is generated by EMAT, has been applied to estimate the thickness-reduction in a steel plate. Especially, the interesting feature of the dispersive behavior in selected wave modes is used to detect the thickness-reduction. Experimental results show that the reduction-level can be quantified by the measurement of the group velocity of the wave which passes though the thinning area.

引用

页码：47 / 52

页数：6