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1392/6/13، جلد ۵، شماره ۳، صفحات -
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Empirical Comparison of the in Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom |
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| چکیده انگلیسی مقاله |
Sound power is considered as anexcellent measure for evaluating the efficiency of noise controls as well as for comparing noise sources in workrooms. This parameter can bedetermined bysound pressure or intensity based methods in real conditions of workrooms. This paper aims empiricallyto compare these in situ methods in relation to a typical industrial machine located in workroom interms ofaccuracy, applicability. Determination of sound powerof a typical model of noisy embroidery machine located in enclosed workroom wasperformedin theinterested frequency range of 125Hz to4000 Hz. Field measurementof sound power wasconducted using the BSWA sound analyzer according toISO 9614 and ISO 3746, respectively. The resultsshowed SWL spectrum of the source was relatively high with flat noise spectrum.Operation speed was one of the most important features which could influencethe noise of embroidery machine. In regard to uncertainty values, the sound power spectra, obtained using the two methods,showed acceptable agreement from the viewpoint of applicability. Thehigher value for pressure methods can be due to fluctuations in background noise and methodlimitations. Direct measurement ofreverberation time compared with approximate method could improve the accuracyof the pressure method. Hence, pressure method can be employed by occupationalhealth experts as analternative to intensity method. Due to its direct and more accurate measurements, intensity method is considered to be amore preferred technique in order to describe any noise sourcesand to evaluatenoise controls at sources. |
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| کلیدواژه‌های انگلیسی مقاله |
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| نویسندگان مقاله |
30192---30193---30194--- |
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| نشانی اینترنتی |
http://ijoh.tums.ac.ir/index.php/ijoh/article/viewArticle/134 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Articles |
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