System and method for predicting sound radiation and scattering

Details System and method for predicting sound radiation and scattering System and method for predicting sound radiation and scattering

1997-05-05

1999-03-23

Williams, Hezron

Measuring and testing

Vibration

By mechanical waves

73657, 356 28, 12866001, G01H 100, G01N 2900

Patent

active

058862641

ABSTRACT:
An alternate formulation is derived for predicting acoustic radiation from a vibrating object in an unbounded fluid medium. The radiated acoustic pressure is shown to be expressible as a surface integral of the particle velocity, which is determinable by using a non-intrusive laser Doppler velocimeter. Solutions thus obtained are unique. Moreover, the efficiency of numerical computations is high because the surface integration can be readily implemented numerically by using the standard Gaussian quadratures. This alternate formulation can be desirable for analyzing the acoustic and vibration responses of a lightweight, a flexible or a structure with a hostile environment for which a non-intrusive laser measurement technique must be used.

REFERENCES:
patent: 3738750 (1973-06-01), Kalb et al.
patent: 4655086 (1987-04-01), Mielnicka-Pate et al.
patent: 5086775 (1992-02-01), Parker et al.
patent: 5099848 (1992-03-01), Parker et al.

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