Flaw detection in railroad wheels using rayleigh-wave EMATS

R. E. Schramm, A. V. Clark, P. J. Shull, D. V. Mitrakovic

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations


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.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Number of pages8
Volume7 B
StatePublished - 1988

All Science Journal Classification (ASJC) codes

  • General Engineering


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