NDT of Railway
| COMPENDEX Antwortnummer 10 - © 1998 EI | |
| Title | |
| Flaw detection in railroad wheels using rayleigh-wave EMATS. | |
| Author | |
| Schramm, R.E. (NBS, Boulder, CO, USA); Clark, A.V.Jr.; Shull, P.J.; Mitrakovic, D.V. | |
| Publication Source | |
| Rev Prog Quant Nondestr Eval v 7B 1988 p 1661-1668 CODEN: RPQEDF ISSN: 0743-0760 ISBN: 0-306-42837-7 | |
| Publication Year | |
| 1988 | |
| Document Type | |
| Journal | |
| Treatment Code | |
| Application; Experimental | |
| Language | |
| English | |
| Abstract | |
| Work underway at the NBS in developing an automated on-line EMAT system for on-site railroad wheel inspection and flaw detection is described.The transmitter and receiver transducers are designed for pitch-catch operation and operate on Rayleigh waves.The system includes a function generator, gated power amplifier, line driver, and impedance matching circuits.Beam optics and operating characteristics are discussed.Signal amplitudes as a function of transducer position around the wheel circumference and other results are plotted.Preliminary results indicate that the electronics and transducer design generate a strong Rayleigh wave in a cast iron wheel.4 Refs. | |
| Accession Number | |
89(3):18216 | |
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