التفاصيل البيبلوغرافية
| العنوان: |
Noise source identification in a rotary compressor: A multidisciplinary synergetic approach. |
| المؤلفون: |
Kim, Han-Jun, Cho, Young Man |
| المصدر: |
Journal of the Acoustical Society of America; 2001, Vol. 110 Issue 2, p887-893, 7p |
| مستخلص: |
The complex nature of noise/vibration generation and transmission in rotating machinery has made it indispensable to employ various techniques to identify the corresponding sources and paths. A theoretical approach via finite-element analysis (FEA), an experimental approach via direct measurement, and a signal processing approach via feature extraction of the measured data have all made significant contributions. Yet, there has not been much interdisciplinary effort among the three areas although their mutually complementary roles have long been recognized. In this paper, a synergetic approach is proposed to noise/vibration source and transmission path identification in order to take advantage of all the merits of the three different approaches. The proposed approach is discussed with a rotary compressor as a testbed. In the new approach, the experimentally measured sound intensity map is initially used to suggest the active radiation area, which guides us to instrument the rotary compressor at the suspected noise/vibration source positions. The collected data from the compressor is then processed to unravel the candidate source(s). Various signal processing techniques such as filtering, Hilbert transform, and fast Fourier transform are used to enhance the desired features buried in the experimental data. Finally, modal analysis via FEA and direct measurement further help to pinpoint the true source(s) and simultaneously verifies the conjecture following the experimental data processing. © 2001 Acoustical Society of America. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
