Characterization of noise emitted by a power tiller through geostatistics
ABSTRACT Noise is one of the harmful and stressful physical agents present in the workplace. Research performed with geostatistics to adjust the semivariogram of tractor noise were performed using the Gaussian and spherical model. In this way, the aim was to map the spatial variability of the noise...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Campina Grande
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| author | Luana M. Gonçalves Gabriel A. e S. Ferraz Marcelo S. de Oliveira Brenon D. S. Barbosa Carlos J. da Silva Patrícia F. P. Ferraz |
| author_facet | Luana M. Gonçalves Gabriel A. e S. Ferraz Marcelo S. de Oliveira Brenon D. S. Barbosa Carlos J. da Silva Patrícia F. P. Ferraz |
| author_sort | Luana M. Gonçalves |
| collection | DOAJ |
| description | ABSTRACT Noise is one of the harmful and stressful physical agents present in the workplace. Research performed with geostatistics to adjust the semivariogram of tractor noise were performed using the Gaussian and spherical model. In this way, the aim was to map the spatial variability of the noise emitted by a power tiller through the sine wave model, besides testing other fitting methods, in order to identify health zones for the workers. The experiment was performed with an agricultural power tiller (10.3 kW) placed in a working regime (1500 rpm), coupled to a brushcutter, and a digital sound level meter to collect noises in points distributed along a regular grid sampling of 2.0 × 2.0 m around the tractor. The spatial dependence of noise was analyzed through semivariogram fitting by different methods and by the wave model to obtain the spatial distribution map interpolated by kriging. It was possible to characterize the structure and the magnitude of the spatial dependence of the noise levels emitted by the tractor, as well as to map the spatial distribution. A maximum noise level of 96.5 dB was observed close to the tractor engine, a value above the limit of 85.0 dB for 8 h of daily exposure (NR-15). Thus, the use of ear protectors is recommended for both the tractor driver and the professionals who support agricultural operation within a radius of 6 m from the emitting source under the conditions studied. |
| format | Article |
| id | doaj-art-1a4057b406514e5cb0de025d3ebfd82a |
| institution | Kabale University |
| issn | 1807-1929 |
| language | English |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-1a4057b406514e5cb0de025d3ebfd82a2025-08-20T03:54:23ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-192923322322810.1590/1807-1929/agriambi.v23n3p223-228S1415-43662019000300223Characterization of noise emitted by a power tiller through geostatisticsLuana M. GonçalvesGabriel A. e S. FerrazMarcelo S. de OliveiraBrenon D. S. BarbosaCarlos J. da SilvaPatrícia F. P. FerrazABSTRACT Noise is one of the harmful and stressful physical agents present in the workplace. Research performed with geostatistics to adjust the semivariogram of tractor noise were performed using the Gaussian and spherical model. In this way, the aim was to map the spatial variability of the noise emitted by a power tiller through the sine wave model, besides testing other fitting methods, in order to identify health zones for the workers. The experiment was performed with an agricultural power tiller (10.3 kW) placed in a working regime (1500 rpm), coupled to a brushcutter, and a digital sound level meter to collect noises in points distributed along a regular grid sampling of 2.0 × 2.0 m around the tractor. The spatial dependence of noise was analyzed through semivariogram fitting by different methods and by the wave model to obtain the spatial distribution map interpolated by kriging. It was possible to characterize the structure and the magnitude of the spatial dependence of the noise levels emitted by the tractor, as well as to map the spatial distribution. A maximum noise level of 96.5 dB was observed close to the tractor engine, a value above the limit of 85.0 dB for 8 h of daily exposure (NR-15). Thus, the use of ear protectors is recommended for both the tractor driver and the professionals who support agricultural operation within a radius of 6 m from the emitting source under the conditions studied.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300223&lng=en&tlng=enconforto acústicomecanização agrícolavariabilidade espacialergonomiamodelo de onda senoidal |
| spellingShingle | Luana M. Gonçalves Gabriel A. e S. Ferraz Marcelo S. de Oliveira Brenon D. S. Barbosa Carlos J. da Silva Patrícia F. P. Ferraz Characterization of noise emitted by a power tiller through geostatistics Revista Brasileira de Engenharia Agrícola e Ambiental conforto acústico mecanização agrícola variabilidade espacial ergonomia modelo de onda senoidal |
| title | Characterization of noise emitted by a power tiller through geostatistics |
| title_full | Characterization of noise emitted by a power tiller through geostatistics |
| title_fullStr | Characterization of noise emitted by a power tiller through geostatistics |
| title_full_unstemmed | Characterization of noise emitted by a power tiller through geostatistics |
| title_short | Characterization of noise emitted by a power tiller through geostatistics |
| title_sort | characterization of noise emitted by a power tiller through geostatistics |
| topic | conforto acústico mecanização agrícola variabilidade espacial ergonomia modelo de onda senoidal |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000300223&lng=en&tlng=en |
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