Effect of sound insulation on noise reduction in an agricultural tractor cab
Abstract Tractor cab interior noise is a risk factor that degrades operators’ work performance and threatens their health; therefore, the noise must be reduced to ensure farmworkers’ safety and efficiency. Cab interior noise can be classified as structure-borne noise and air-borne noise. Structure-b...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-12-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-26408-3 |
| _version_ | 1797977405239853056 |
|---|---|
| author | Hyun-Woo Han Won-Hong Im Hyo-Joon Choi Seung-Je Cho Sang-Dae Lee Young-Jun Park |
| author_facet | Hyun-Woo Han Won-Hong Im Hyo-Joon Choi Seung-Je Cho Sang-Dae Lee Young-Jun Park |
| author_sort | Hyun-Woo Han |
| collection | DOAJ |
| description | Abstract Tractor cab interior noise is a risk factor that degrades operators’ work performance and threatens their health; therefore, the noise must be reduced to ensure farmworkers’ safety and efficiency. Cab interior noise can be classified as structure-borne noise and air-borne noise. Structure-borne noise has been extensively studied. However, although air-borne noise greatly contributes to cab interior noise, detailed frequency-domain analyses have not been performed. In this study, the components of cab interior noise were identified in the frequency domain through an order analysis, which helped improve the sound insulation of the cab and reduce the effects of air-borne noise. A test was performed while driving a tractor on a chassis dynamometer in a semi-anechoic chamber for reproducible measurement and evaluation. The A-weighted sound pressure was transformed by a fast Fourier transform algorithm, and its order was tracked by the engine speed signal. In addition, a direct path was identified by acoustic images using a sound camera. The contributions of major noise sources were identified through an order analysis. We proved that air-borne noise significantly contributes to the interior noise of tractor cabs and that improvement of the cab sound insulation is an effective noise-reduction technique. |
| first_indexed | 2024-04-11T05:07:27Z |
| format | Article |
| id | doaj.art-64cd9744d7a94001846855c0f7d29f45 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T05:07:27Z |
| publishDate | 2022-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-64cd9744d7a94001846855c0f7d29f452022-12-25T12:16:46ZengNature PortfolioScientific Reports2045-23222022-12-0112111510.1038/s41598-022-26408-3Effect of sound insulation on noise reduction in an agricultural tractor cabHyun-Woo Han0Won-Hong Im1Hyo-Joon Choi2Seung-Je Cho3Sang-Dae Lee4Young-Jun Park5Department of Biosystems Engineering, Seoul National UniversitySamwoo Agri-machinery Co., Ltd.Samwoo Agri-machinery Co., Ltd.Korea Institute of Industrial TechnologyKorea Institute of Industrial TechnologyDepartment of Biosystems Engineering, Seoul National UniversityAbstract Tractor cab interior noise is a risk factor that degrades operators’ work performance and threatens their health; therefore, the noise must be reduced to ensure farmworkers’ safety and efficiency. Cab interior noise can be classified as structure-borne noise and air-borne noise. Structure-borne noise has been extensively studied. However, although air-borne noise greatly contributes to cab interior noise, detailed frequency-domain analyses have not been performed. In this study, the components of cab interior noise were identified in the frequency domain through an order analysis, which helped improve the sound insulation of the cab and reduce the effects of air-borne noise. A test was performed while driving a tractor on a chassis dynamometer in a semi-anechoic chamber for reproducible measurement and evaluation. The A-weighted sound pressure was transformed by a fast Fourier transform algorithm, and its order was tracked by the engine speed signal. In addition, a direct path was identified by acoustic images using a sound camera. The contributions of major noise sources were identified through an order analysis. We proved that air-borne noise significantly contributes to the interior noise of tractor cabs and that improvement of the cab sound insulation is an effective noise-reduction technique.https://doi.org/10.1038/s41598-022-26408-3 |
| spellingShingle | Hyun-Woo Han Won-Hong Im Hyo-Joon Choi Seung-Je Cho Sang-Dae Lee Young-Jun Park Effect of sound insulation on noise reduction in an agricultural tractor cab Scientific Reports |
| title | Effect of sound insulation on noise reduction in an agricultural tractor cab |
| title_full | Effect of sound insulation on noise reduction in an agricultural tractor cab |
| title_fullStr | Effect of sound insulation on noise reduction in an agricultural tractor cab |
| title_full_unstemmed | Effect of sound insulation on noise reduction in an agricultural tractor cab |
| title_short | Effect of sound insulation on noise reduction in an agricultural tractor cab |
| title_sort | effect of sound insulation on noise reduction in an agricultural tractor cab |
| url | https://doi.org/10.1038/s41598-022-26408-3 |
| work_keys_str_mv | AT hyunwoohan effectofsoundinsulationonnoisereductioninanagriculturaltractorcab AT wonhongim effectofsoundinsulationonnoisereductioninanagriculturaltractorcab AT hyojoonchoi effectofsoundinsulationonnoisereductioninanagriculturaltractorcab AT seungjecho effectofsoundinsulationonnoisereductioninanagriculturaltractorcab AT sangdaelee effectofsoundinsulationonnoisereductioninanagriculturaltractorcab AT youngjunpark effectofsoundinsulationonnoisereductioninanagriculturaltractorcab |