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Abstract

The velocity of leaky Rayleigh waves, generated by a special transducer immersed in water, were calculated from the measurement of the phase phi as a function of the transducer distance z to the specimen surface in the adequate z range. A model predicting the theoretical phi(z) curve was used to determine the choice of this z range. The technique proposed was then applied to metallic coatings deposited on steel substrates in order to measure their thickness. In layered media, the Rayleigh wave velocity is a function of the product of the layer thickness by the wave frequency.

Additional information

Authors: COSTE J F, JRC Ispra (IT);LAKESTANI F, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 1994 IEEE International Ultrasonics Symposium, Cannes (FR), November 1-4, 1994
Availability: Available from (1) as Paper EN 38757 ORA
Record Number: 199411620 / Last updated on: 1995-01-10
Category: PUBLICATION
Original language: en
Available languages: en
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