Measurement of residual stress with laser-EMAT ultrasonic method

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: Pei, Cuixiang^{a; b; *} | Wu, Wenjiang^a | Uesaka, Mitsuru^a | Demachi, Kazuyuki^a | Fukuchi, Tetsuo^c | Hirai, Shunsuke^a

Affiliations: [a] School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, Japan | [b] School of Aerospace, Xi'an Jiaotong University, Xi'an, Shaanxi, China | [c] Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry, Yokosuka-Shi, Kanagawa, Japan | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Cuixiang Pei, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, Japan. E-mail: peicx2009@gmail.com

Abstract: In this work, a non-contact ultrasonic method based on laser generation and EMAT (electromagnetic acoustic transducer) detection is proposed for residual stress measurement. A numerical method based on finite element model is established to simulate the laser-generated ultrasound in pre-stressed media to determine the capability and sensitivity of this method. Finally, the laser-EMAT ultrasonic method isstudied to measure the residual stress in bearing balls to assess the fatigue level of the bearings.

Keywords: Residual stress, laser ultrasound, numerical simulation, EMAT

DOI: 10.3233/JAE-141819

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 109-114, 2014