Title :
Diffraction field of uniformly excited elastic wave beams as the superposition of Gaussian beams
Author :
Mishchenko, Victor
Author_Institution :
Inst. of Appl. Problems of Mech. & Math., Acad. of Sci., Lvov, Ukraine
fDate :
6/21/1905 12:00:00 AM
Abstract :
On the basis of the parabolic approximation the spreading of uniformly excited (on the aperture) elastic wave beams is investigated. The method of presentation of the excitation as a superposition of Gaussian beams is used. The effect of the nearfield oscillation of the amplitude and phase of the elastic wave beams is accounted for
Keywords :
Gaussian processes; acoustic wave diffraction; elastic waves; Gaussian beams superposition; amplitude; diffraction field; nearfield oscillation; parabolic approximation; phase; spreading; uniformly excited elastic wave beams; Acoustic beams; Acoustic materials; Apertures; Building materials; Diffraction; Mathematics; Nondestructive testing; Seismology; Vibrations; Video recording;
Conference_Titel :
Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory, 1999. Proceedings of IVth International Seminar/Workshop
Conference_Location :
Lviv
Print_ISBN :
966-02-0864-2
DOI :
10.1109/DIPED.1999.822150
