Estimation of Plate Vibration and Its Far Field Sound by Means of Near Field Sound Measurement
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概要
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As one approach to noise problem of machinery, advantages of near field sound measurement are discussed for a resonating rectangular steel plate. A proposed technique after Acoustic Intensity Method was applied to measure the distributions of both intensity and particle velocity over a plane placed close to a sound source. Particle velocity in the normal direction of plate proved to be reliable for estimating the vibration of the plate surface. And far field sound pressure is calculated accurately from it. In addition, for the ease of calculating far field sound pressure form a known mode of vibration, a simple approximation by which the sound source can be replaced by the least number of point sources, is also proposed.
- 一般社団法人日本機械学会の論文
著者
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Houjoh Haruo
Research Laboratory Of Precision Machinery & Electronics Tokyo Institute Of Technology
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Houjoh Haruo
Research Laboratory Of Precision Machinery & Electronics T.i.t.
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Kitano Tadashi
Fuji Photo Film Co. Ltd.
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UMEZAWA Kiyohiko
Research Laboratory of Precision Machinery & Electronics, T. I. T.
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