Title :
Stimulated material vibration by inhomogeneous plane waves and its application for bounded ultrasonic beams
Author :
Van Den Abeele, Koen ; Briers, R. ; Leroy, O.
fDate :
Oct. 31 1994-Nov. 3 1994
Abstract :
Instead of an ordinary approach by means of homogeneous waves, more general complex harmonic waves may be used to examine medium vibration properties. It occurs that not homogeneous wave but rather only particular inhomogeneous plane waves can stimulate eigenvibrations of a given structure. The reflection and transmission of such inhomogeneous waves is investigated for plane parallel interfaces as well as their scattering at periodically corrugated boundaries between liquid and solids. Using an original description of a bounded ultrasonic beam as a finite superposition of inhomogeneous waves, this theory can be applied to examine the deformation of gaussian profiles and to explicitly relate this deformation to the stimulation of mode vibrations
Keywords :
eigenvalues and eigenfunctions; ultrasonic reflection; ultrasonic waves; vibrations; bounded ultrasonic beam; bounded ultrasonic beams; complex harmonic waves; eigenvibrations; finite superposition; gaussian profiles; inhomogeneous plane waves; mode vibrations; periodic rough corrugated surfaces; periodically corrugated boundaries; plane parallel interfaces; stimulated material vibration; Acoustic beams; Acoustic reflection; Corrugated surfaces; Eigenvalues/eigenfunctions; Mechanical factors; Periodic structures;
Conference_Titel :
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location :
Cannes, France
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1994.401692
