Measurement of sound power for the power machines
Date Issued
2011
Date
2011
Author(s)
Chen, Tzu-Hsuan
Abstract
The sound level of power machines can be indicated by sound power. The higher sound power level can propagate far distance, and higher sound pressure level.
During the measurement, the position of sound source can’t locate in the specified point, e.g. the measurement center, there is surely a little displacement, this paper discussed the effects of the wrong position of sound source on the measurement according to ISO 3744、ISO 3746、ISO 6393. The results of theoretical and practical measurements were compared.
Finally, the measurement of sound power, e.g. the air compressor and the earth removing machines were performed, we hope the standard measurement method of sound power for power machines which are including construction machines would be established.
Subjects
sound power
sound displacement
noise
the measurement of machines
Type
thesis
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