| تعداد نشریات | 24 |
| تعداد شمارهها | 916 |
| تعداد مقالات | 8,202 |
| تعداد مشاهده مقاله | 15,918,403 |
| تعداد دریافت فایل اصل مقاله | 13,468,796 |
Sound Quantity and Quality of Sampo 3065 Combine Harvester | ||
| Iran Agricultural Research | ||
| مقاله 7، دوره 33، شماره 1، آذر 2014، صفحه 73-86 اصل مقاله (460.08 K) | ||
| نوع مقاله: Full Article | ||
| شناسه دیجیتال (DOI): 10.22099/iar.2014.2392 | ||
| نویسندگان | ||
| M. LASHGARI* 1؛ A. MALEKI2 | ||
| 1Arak University | ||
| 2Shahrekord University | ||
| چکیده | ||
| ABSTRACT- Noise is considered as one of the most debilitating conditions in farming operations. In this study, a number of factors affecting the noise generated by Sampo 3065 combine harvesters were evaluated. Factors were engine speed and gear ratio for combines with and without original cabins. A factorial experiment arranged as a completely randomized design with four replicates was used. Results indicated that loudness level correlated strongly with A-weighted sound pressure level (R2=0.99) but had a weak relationship with linear sound pressure level (R2 = 0.60). Other results showed that original cabins decreased 30.5, 22.8 and 5.4 percent of the loudness level, A-weighted and linear sound pressure levels, respectively. Mean value averages for loudness level, A-weighted and linear sound pressure levels for high engine speed were 6.9, 9.1 and 11.1 percent higher than those at low engine speed. | ||
| کلیدواژهها | ||
| Keywords: Combine Harvester؛ Loudness Level and Sound Pressure Level؛ Noise | ||
|
آمار تعداد مشاهده مقاله: 2,536 تعداد دریافت فایل اصل مقاله: 2,052 |
||