8. Advances in Electromagnetic Transducers
Tom Szabo mentioned during his presentation that there is a great deal of similiarity between the response of a meander line surface wave EMT and that of an interdigital transducer. We have been investigating their common properties to see if they can be exploited for NDE applications. The generation of bulk waves in delay lines is considered a problem for interdigital transducers,2 but for NDE it might provide a convenient means of generating bulk waves propagating at an angle to the surface.
Moran, T. J., "Characteristics and Applications of Electromagnetic Surface Wave Transducers" (1977). Proceedings of the ARPA/AFML Review of Progress in Quantitative NDE, July 1975–September 1976. 24.