title: Measurement of the intrinsic attenuation of longitudinal waves in anisotropic material from uncorrected raw data.
abstract: Among the physical parameters characterising the interaction of the ultrasonic beam with its supporting medium, ultrasonic attenuation is an important input parameter to simulate wave propagation and defect-beam phenomena. The measurement of the intrinsic attenuation in anisotropic material however is a difficult task. The paper presents an approach to determine intrinsic attenuation in anisotropic materials such as austenitic stainless steel welds and cladding. It deals with improvements on the initial device, based on measurements on two samples with different thicknesses (10mm and 20mm). A previous paper presented preliminary results with this new approach for isotropic materials.
authors.affiliation: European Commission, Joint Research Centre, Institute for Energy and Transport, The Netherlands. thomas.seldis@jrc.nl
authors.forename: Thomas
authors.initials: T
authors.lastname: Seldis