Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom
Sound power is considered as an excellent measure for evaluating the efficiency of noise controls as well as for comparing noise sources in workrooms. This parameter can be determined by sound pressure or intensity based methods in real conditions of workrooms. This paper aims empirically to compare...
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| Format: | Article |
| Language: | English |
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Tehran University of Medical Sciences
2015-10-01
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| Series: | International Journal of Occupational Hygiene |
| Subjects: | |
| Online Access: | https://ijoh.tums.ac.ir/index.php/ijoh/article/view/73 |
| _version_ | 1818865846657744896 |
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| author | MOHSEN ALIABADI ROSTAM GOLMOHAMMADI ABDOLREZA OHADI |
| author_facet | MOHSEN ALIABADI ROSTAM GOLMOHAMMADI ABDOLREZA OHADI |
| author_sort | MOHSEN ALIABADI |
| collection | DOAJ |
| description | Sound power is considered as an excellent measure for evaluating the efficiency of noise controls as well as for comparing noise sources in workrooms. This parameter can be determined by sound pressure or intensity based methods in real conditions of workrooms. This paper aims empirically to compare these in situ methods in relation to a typical industrial machine located in workroom in terms of accuracy, applicability. Determination of sound power of a typical model of noisy embroidery machine located in enclosed workroom was performed in the interested frequency range of 125 Hz to 4000 Hz. Field measurement of sound power was conducted using the BSWA sound analyzer according to ISO 9614 and ISO 3746, respectively. The results showed SWL spectrum of the source was relatively high with flat noise spectrum. Operation speed was one of the most important features which could influence the 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. The higher value for pressure methods can be due to fluctuations in background noise and method limitations. Direct measurement of reverberation time compared with approximate method could improve the accuracy of the pressure method. Hence, pressure method can be employed by occupational health experts as an alternative to intensity method. Due to its direct and more accurate measurements, intensity method is considered to be a more preferred technique in order to describe any noise sources and to evaluate noise controls at sources. |
| first_indexed | 2024-12-19T10:54:02Z |
| format | Article |
| id | doaj.art-89a30884323247719d3fcfa3a916e885 |
| institution | Directory Open Access Journal |
| issn | 2008-5109 2008-5435 |
| language | English |
| last_indexed | 2024-12-19T10:54:02Z |
| publishDate | 2015-10-01 |
| publisher | Tehran University of Medical Sciences |
| record_format | Article |
| series | International Journal of Occupational Hygiene |
| spelling | doaj.art-89a30884323247719d3fcfa3a916e8852022-12-21T20:24:52ZengTehran University of Medical SciencesInternational Journal of Occupational Hygiene2008-51092008-54352015-10-015373Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial WorkroomMOHSEN ALIABADI0ROSTAM GOLMOHAMMADI1ABDOLREZA OHADI2Department of Occupational Hygiene, Faculty of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.Department of Occupational Hygiene, Faculty of Public Health and Center for Health Researches, Hamadan University of Medical Sciences, Hamadan, Iran.Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran.Sound power is considered as an excellent measure for evaluating the efficiency of noise controls as well as for comparing noise sources in workrooms. This parameter can be determined by sound pressure or intensity based methods in real conditions of workrooms. This paper aims empirically to compare these in situ methods in relation to a typical industrial machine located in workroom in terms of accuracy, applicability. Determination of sound power of a typical model of noisy embroidery machine located in enclosed workroom was performed in the interested frequency range of 125 Hz to 4000 Hz. Field measurement of sound power was conducted using the BSWA sound analyzer according to ISO 9614 and ISO 3746, respectively. The results showed SWL spectrum of the source was relatively high with flat noise spectrum. Operation speed was one of the most important features which could influence the 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. The higher value for pressure methods can be due to fluctuations in background noise and method limitations. Direct measurement of reverberation time compared with approximate method could improve the accuracy of the pressure method. Hence, pressure method can be employed by occupational health experts as an alternative to intensity method. Due to its direct and more accurate measurements, intensity method is considered to be a more preferred technique in order to describe any noise sources and to evaluate noise controls at sources.https://ijoh.tums.ac.ir/index.php/ijoh/article/view/73Sound powerIn situ methodsEmbroidery machineIndustrial workroom |
| spellingShingle | MOHSEN ALIABADI ROSTAM GOLMOHAMMADI ABDOLREZA OHADI Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom International Journal of Occupational Hygiene Sound power In situ methods Embroidery machine Industrial workroom |
| title | Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom |
| title_full | Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom |
| title_fullStr | Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom |
| title_full_unstemmed | Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom |
| title_short | Empirical Comparison of the In Situ Methods for Determining Sound Power of Typical Embroidery Machine Located in Industrial Workroom |
| title_sort | empirical comparison of the in situ methods for determining sound power of typical embroidery machine located in industrial workroom |
| topic | Sound power In situ methods Embroidery machine Industrial workroom |
| url | https://ijoh.tums.ac.ir/index.php/ijoh/article/view/73 |
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