Enhanced directivity with array gratings
| Autor: | Benjamin A. Cray, Geoffrey R. Moss |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Time Factors
Trace (linear algebra) Acoustics and Ultrasonics Acoustics Finite Element Analysis Plane wave Physics::Optics Vibration Directivity Motion Optics Arts and Humanities (miscellaneous) Pressure Transducers Pressure Wavenumber Computer Simulation Physics Fourier Analysis business.industry Numerical Analysis Computer-Assisted Equipment Design Models Theoretical Wavelength Sound Acoustic wave propagation business Structural acoustics |
| Zdroj: | The Journal of the Acoustical Society of America. 136:EL103-EL108 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.4885479 |
| Popis: | A planewave, incident on a panel, produces an acoustic trace wavelength that propagates along the surface of the panel. The trace wavelength excites the panel into vibration, creating structural waves within the panel that propagate. These structural waves can be purposely Bragg scattered, creating replicas of the trace wavenumber. The replicas are shifted in wavenumber precisely by the inverse of the periodic separation distance l. Hence, in principle, it should be possible to resolve the acoustic trace wavelength from one of the shifted replicas of the panel's response. The incident angle can then be ascertained from the replicated trace wavelengths. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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