Journal of the Society of Powder Technology, Japan
Online ISSN : 1883-7239
Print ISSN : 0386-6157
ISSN-L : 0386-6157
The Effects of the particle Properties on the Parameters of Impact Sound between Two Particles
Jusuke HIDAKAAtsuko SHIMOSAKAShigeo MIWA
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1987 Volume 24 Issue 10 Pages 655-663

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Abstract
The parameters of impact sound between two particles are discussed to measure the particle size and velocity of colliding particles by the analysis of that impact sound. The radiation mechanism of the impact sound is considered theoretically, and the pressure waveform of the sound is estimated on the basis of the radiation mechanism. The calculation of pressure waveform takes account of the reflection of the impact sound from the surface of the colliding spherical particle. The estimated waveform agrees well with the measured one.
The parameters of impact sound related closely to the particle size and impact velocity between two particles.
These results show that it is possible to measure the particle size and velocity of flowing particles by the analysis of flow noise.
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© The Society of Powder Technology, Japan
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