Topic
Acoustic interferometer
About: Acoustic interferometer is a research topic. Over the lifetime, 1493 publications have been published within this topic receiving 19355 citations.
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05 Oct 1998
TL;DR: In this article, the exact expression for the impedance of a rectangular strip of arbitrary width and height, in the case of horizontally polarized waves, was derived and applied to the problem of Bleustein-Gulyaev wave scattering.
Abstract: A novel exact expression for the impedance of a rectangular strip of arbitrary width and height, in the case of horizontally polarized waves, is derived. The impedance representation obtained is applied to the problem of Bleustein-Gulyaev wave scattering on a single rectangular strip of small height. The exact asymptotic expressions for the complex amplitudes of the reflection and transmission coefficients are calculated for this problem, taking into account second-order effects with respect to a small parameter such as the ratio between the strip height and the wavelength. It is shown that the second-order effects are not purely quadratic with respect to the small parameter considered and the main contribution contains as multiplier the logarithm of this parameter.
01 Jan 2000
TL;DR: The theory of propagation small amplitude bulk acoustic waves in crystals under the uniaxial mechanical pressure has made by taking into account the condition of non-homogeneous deformation of crystal sample.
Abstract: The development of the theory of propagation small amplitude bulk acoustic waves in crystals under the uniaxial mechanical pressure has made by taking into account the condition of non-homogeneous deformation of crystal sample. It has been shown that the path of bulk acoustic waves will be function of a kind non-homogeneous deformation. As an example the calculation for some crystal directions of cubic crystal Bi12GeOzo (23 point symmetry) has made.
01 Oct 1976
TL;DR: In this paper, the cristalline constants are used to calculate the slowness curve of acoustic surface wave (a.s.w) devices, such as delay lines, acoustic lenses, apodized filters, helical long delay lines.
Abstract: Diffraction effects are important in many acoustic surface wave (a.s. w) devices : delay lines, acoustic lenses, apodized filters, helical long delay lines... If the slowness curve (i.e dependance of the slowness with propagation direction) is known, theoritical prediction of these effects can be done. But in some important cases, such as Li Nb 03, the cristalline constants are not known with a sufficient precision to permit an accurate computation of the slowness curve. Two global experimental methods can be used to determine the slowness.