Method of ultrasonic non-destructive testing

Abstract

Abstract The method uses spectral analysis of leaky Rayleigh waves to yield information relating to surface crack dimensions. The method comprises placing a transmitter transducer (20) to transmit toward an immersed test-piece (30), placing a receiver transducer (23) to receive from the test-piece, exciting the transmitter transducer to establish ultrasonic waves in the test-piece, positioning the receiver transducer at substantially the Rayleigh Critical Angle ( theta ) for the test-piece material with respect to the normal to the test-piece surface and recording the receiver transducer output for analysis. The receiver transducer may be on the same side of the test piece as the transmitter transducer, and the transducers may form a single transmitter/receiver transducer. <IMAGE>

Inventors

• 👤 Leonard John Bond
• 👤 Nader Saffari

Bibliographic Details