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Noise Radiation Characteristics and its test Methods

Zeng Xianren

Abstract


The characteristics and theory of sound radiation of steady-state vibration has been analyzed in this paper. Gauss theorem of steady-state sound radiation has been deduced. And taking DS35 excavator for experimental object by hemisphere surface method, the radiated sound power of the excavator is the same as testing the sound pressure on various surfaces based on relevant international standard. Finally, a test method of radiated sound power for cylindrical vibration object is put forward.


Keywords


Gauss theorem, Radiation noise, sound power, test methods

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