Nondestructive evaluation of material properties with EMAT (formability in cold rolled steel sheets and residual stress in railroad wheel)

Author

Murayama, R. ; Fujisawa, K. ; Fukuoka, Hiroki ; Hirao, M. ; Yonehara, S.

Author_Institution

Sumitomo Metal Ind. Ltd., Amagasaki, Japan

fYear

1989

fDate

3-6 Oct 1989

Firstpage

1159

Abstract

Ultrasonic techniques using an EMAT (electromagnetic acoustic transducer) for evaluating material properties were developed. Two items are described. One is the evaluation of the formability in cold-rolled steel sheets by using the S₀-mode plate-wave EMAT. The other is the measurement by the stress in the rim of railroad wheels by using two polarized SH-waves EMATs. The experimental results obtained in these techniques agree with theoretical predictions, and the techniques are useful for monitoring the material properties

Keywords

carbon steel; cold rolling; elastic constants; internal stresses; plastic deformation; recrystallisation texture; strain gauges; ultrasonic materials testing; ultrasonic transducers; S₀-mode plate-wave EMAT; US techniques; acoustoelastic constants; electromagnetic acoustic transducer; low C steel; plastic deformation; railroad wheel; recrystallisation texture; residual stress; strain gauge; theoretical predictions; two polarized SH-waves EMATs; Acoustic measurements; Acoustic transducers; Electromagnetic measurements; Material properties; Polarization; Steel; Stress measurement; Ultrasonic imaging; Ultrasonic variables measurement; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1989. Proceedings., IEEE 1989

Conference_Location

Montreal, Que.

Type

conf

DOI

10.1109/ULTSYM.1989.67171

Filename

67171