Abstracts: NDT of Railway

NDTnet 1998 July, Vol.3 No.7

INSPEC Antwortnummer 7 - © 1998 IEE
Title
	Ultrasonic characterization of residual stress and flaws in cast steel railroad wheels.
Author
	Clark, A.V.; Schramm, R.E.; Fukuoka, H.; Mitrakovic, D.V. (NBS, Boulder, CO, USA)
Publication Source
	IEEE 1987 Ultrasonics Symposium Proceedings (Cat. No.87CH2492-7) Editor(s): McAvoy, B.R. New York, NY, USA: IEEE, 1987. p.1079-82 vol.2 of 2 vol. 1186 pp. 8 refs. Conference: Denver, CO, USA, 14-16 Oct 1987 Sponsor(s): Ultrasonics Ferroelectr. & Frequency Control Soc Price: CCCC 0090-5607/87/0000-1079$01.00
Document Type
	Conference Article
Treatment Code
	Practical; Theoretical; Experimental
Country of Publication
	United States
Language
	English
Abstract
	Two ongoing safety problems in cast steel railroad wheels are the buildup of residual stress in the rim and the growth of cracks in the tread. Electromagnetic-acoustic transducer (EMAT) technology shows promise for the nondestructive evaluation of both. The acoustoelastic effect generates a small but measurable acoustic birefringence in the presence of stress fields, while Rayleigh waves are sensitive to surface disruptions from flaws. Experimental investigations of both problems indicate that these noncontact inspection methods lend themselves to automated use in a railyard.
Accession Number
	88:3197529