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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TL;DR: In this paper, an efficient finite-element program utilising acoustic surface impedance is described for the analysis of flat overlay waveguides for acoustic surface waves, and the results obtained agree well with the earlier theoretical and experimental results.
Abstract: An efficient finite-element program utilising acoustic surface impedance is described for the analysis of flat overlay wave-guides for acoustic surface waves. The results obtained agree well with the earlier theoretical and experimental results.
2 citations
TL;DR: In this paper, the excitation of a flexible beam by acoustic disturbances generated by a spreading subsonic jet and the resulting interaction and acoustic radiation is investigated numerically, which consists of solving the nonlinear Euler equations coupled to a nonlinear equation governing the vibration of the panel due to acoustic loading.
Abstract: The excitation of a flexible beam by acoustic disturbances generated by a spreading subsonic jet and the resulting interaction and acoustic radiation is investigated numerically. The formulation consists of solving the nonlinear Euler equations coupled to a nonlinear equation governing the vibration of the panel due to acoustic loading. The incident sound waves result from both disturbances due to the initial source as well as disturbances generated by instability waves in the jet. Under appropriate conditions, instability waves can also be generated upstream of the nozzle exit and may contribute additional sound. Results are obtained for the panel response as well as the transmitted and reflected acoustic field from the flexible panel.
2 citations
Patent•
10 Jun 2003
TL;DR: In this article, the authors propose a geometrical modification in the propagation path of the acoustic waves generated by the source of acoustic waves to shape the acoustic wave in a designated (designed) manner.
Abstract: A bellows for coupling a source of acoustic waves having an acoustic propagation medium, to a patient, has a geometrical modification in that region wherein the bellows can be seated against the patient for the introduction of acoustic waves into the patient . The geometrical modification in the propagation path of the acoustic waves generated by the source of acoustic waves shapes the acoustic waves in a designated (designed) manner. Additionally or alternatively, the bellows can have a section in the region that is formed of a different material than the rest of the bellows.
2 citations
01 Jan 1982
TL;DR: In this article, an all-fiber probe has been used to study the properties of surface coustic wave devices and for measuring acoustic wave amplitude and phase, which offers several advantages over conventional probes: fewer adjustments are necessary for good operation, a dynamic range
Abstract: Optical probing techniques have been extensively used to study the properties of surface a coustic wave devices and for measuring acoustic wave amplitude and phase. Several conventional probe configurations and their merits will be discussed. Recently, we have developed an all-fiber probe. probe offers several advantages over conventional probes: fewer adjustments are necessary for good operation, a dynamic range
2 citations
2 citations