Ultrasonic Wave Attenuation Measurements in RPV Cladding

Reliable ultrasonic inspections require a good understanding of the beam¿s behaviour within the inspected material. Among the physical parameters characterising the interaction of the beam with its supporting medium, ultrasonic attenuation is important because it limits the volume of the system that should be inspected, and is an input parameter for mathematical models, which play an increasingly important role in non-destructive testing by allowing computer simulations. In this study the predominantly scattering-induced longitudinal wave attenuation in RPV cladding is measured as a function of the propagation direction. The experimental data is obtained by an enhanced measurement technique, which requires mapping of the ultrasonic field transmitted through plane-parallel test pieces of different thicknesses. The high accuracy of the measurement technique has been previously demonstrated, and its superiority over conventional approaches is shown here once again.

SELDIS Thomas; 

2010-03-30

Publications Office of the European Union

JRC56073

https://publications.jrc.ec.europa.eu/repository/handle/JRC56073,   

10.2790/18092,