کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7545152 1489593 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studying noise measurement and analysis
ترجمه فارسی عنوان
مطالعه اندازه گیری و تحلیل نویز
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
This paper presents some aspects regarding to sound characteristics, how the sound pressure level can be expressed, and how the sound analysis can be used for fault detection. Sound level meter is used for sound measurement, which provides measurements of sound pressure levels and displays it in units of dB. The sound level meter and different types of used transducers are briefly presented. In industrial environment noise measurements are made because useful sound cannot be separated from other noises. Motors' working is followed by vibrations and oscillations which are in audible frequency domain so any changes of the environmental noise can lead to useful information. If a fault occurs, the produced vibration sound overlaps with the base sound signal and modulation appears. In case of different faults frequency and amplitude modulations appear. The latter can be easily detected due to the sideband frequencies in the frequency spectrum. Using Matlab functions, the Power Spectral Density of a signal can be obtained. Knowing the specific frequencies due to the rotating element and analyzing the PSD of measured noise faults can be localized. If sideband frequency around the fundamental frequencies is shown, then it has the meaning of an abnormality presence.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Manufacturing - Volume 22, 2018, Pages 533-538
نویسندگان
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