A new method for determining acoustoelastic constants and plane stresses in textured thin plates : Chatellier, J.-Y.; Touratier, M. Journal of the Acoustical Society of America, Vol. 83, No. 1, pp. 109– 117 (Jan. 1988)

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 158 KB
• Volume: 28
• Category: Article
• ISSN: 0963-8695
• DOI: 10.1016/0963-8695(95)93340-c

✦ Synopsis

An ultrasonic technique has been used to characterise the state of residual stress and texture in the rims of cast steel railroad wheels. Orthogonally polarized shear-horizontal (SH) waves are propagated through the thickness of the rim in pulse-echn mode. The difference of arrival times of these waves (acoustic birefringenee) depends upon both texture and stress. The birefringence, B, was measured using two transducers: an electromagnetic-acoustic transducer (EMAT) and a piezoelectric transducer. Two wheels were tested. The wheel had a sawcut, which locally relieved the residual (hoop) stress. Measurement of the birefringence at the sawcut has allowed estimation of contribution of texture,