Callaghan Innovation Research Papers

Back to Research Papers

TitleHigh frequency propagation in structured solids
Publication TypeConference Paper
Year of Publication2007
AuthorsHarris, P.D., Dawson A., Young R., and Lecarpentier F.
Conference NameProceedings - IEEE Ultrasonics Symposium
Date Published2007
KeywordsAluminium sheet, Aluminum cladding, Anisotropic behaviors, Crack propagation, Critical angles, Extruded rods, High frequencies, High frequency propagation, Light metals, Microstructure, Plastics, Polymers, Porous, Propagation, Ultrasonic wave propagation, Ultrasonics, Wave fronts
AbstractIn this work high frequency ultrasonic wave propagation in an immersed porous aluminium sheet is modelled and the results verified by experiment using focused broadband 50MHz waves. The sample microstructure has a profound influence on the propagation which occurs as a single wavefront and facilitates transmission at angles far greater than the critical angles for a homogeneous solid. We also found that, in addition to specialist plastics, some common plastic extruded rods usually considered homogeneous exhibit anisotropic behavior.

Back to top