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Abstract

The use of Leaky Rayleigh waves generated by a focused transducer enables the detection and sizing of surface-breaking cracks. This paper describes a model used to calculate the normalised amplitude of the echo from a crack as a function of the transducer position (echo dynamic curve). An analytical formula is proposed which evaluates the influence of various parameters such as crystal size, the nominal frequency and focal distance of the transducer, and the acoustic characteristics of the material.

Additional information

Authors: LAKESTANI F, JRC Ispra (IT);COSTE J F, JRC Ispra (IT);LEMAITRE P, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 6th European Conference on Non Destructive Testing, Nice (FR), October 24-28, 1994
Availability: Available from (1) as Paper EN 38378 ORA
Record Number: 199410858 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en
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