Characterization of noise emitted by a power tiller through geostatistics

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Luana M.
Data de Publicação: 2019
Outros Autores: Ferraz, Gabriel A. e S., Oliveira, Marcelo S. de, Barbosa, Brenon D. S., Silva, Carlos J. da, Ferraz, Patrícia F. P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/40306
Resumo: 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.
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spelling Characterization of noise emitted by a power tiller through geostatisticsCaracterização do ruído emitido por um trator de rabiça por meio da geoestatísticaAcoustic comfortAgricultural mechanizationSpatial variabilitySine wave modelMáquinas agrícolas - RuídosConforto acústicoMecanização agrícolaVariabilidade espacialModelo de onda senoidalAgricultural machinery - NoisesNoise 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.O ruído é um dos agentes físicos nocivos e estressantes presente no ambiente de trabalho. Pesquisas realizadas com a geoestatistica para ajuste de semivariograma de ruído de tratores foram feitos por meio do modelo gaussiano e esférico. Dessa forma, objetivou-se mapear a variabilidade espacial do ruído emitido por um trator de rabiça, por meio do modelo de onda senoidal e testando outros métodos de ajuste, visando identificar zonas de salubridade para os trabalhadores. O experimento foi desenvolvido com um trator de rabiça agrícola (10.3 kW) colocado em regime de trabalho (1500 rpm), acoplado a uma roçadora, e um decibelímetro digital para a coleta dos ruídos em pontos distribuídos numa malha amostral regular de 2.0 × 2.0 m ao redor do trator. A dependência espacial do ruído foi analisada por meio de ajuste de semivariograma por diferentes métodos e pelo modelo wave para obtenção do mapa de distribuição espacial interpolados por krigagem. Foi possível caracterizar a estrutura e a magnitude da dependência espacial dos níveis de ruído emitidos pelo trator, bem como realizar o mapeamento da distribuição espacial. Observou-se valor máximo de nível de ruído de 96.5 dB próximo ao trator, valor acima do limite permitido de 85.0 dB para 8 h de exposição diária (NR-15). Assim, o uso de protetores auriculares é recomendado tanto para o tratorista quanto para os profissionais que dão suporte à operação agrícola em um raio de 6 m da fonte emissora, nas condições estudadas.Departamento de Engenharia Agrícola - UFCG2020-04-24T12:42:26Z2020-04-24T12:42:26Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfGONÇALVES, L. M. et al. Characterization of noise emitted by a power tiller through geostatistics. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 23, n. 3, p. 223-228, 2019.http://repositorio.ufla.br/jspui/handle/1/40306Revista Brasileira de Engenharia Agrícola e Ambientalreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessGonçalves, Luana M.Ferraz, Gabriel A. e S.Oliveira, Marcelo S. deBarbosa, Brenon D. S.Silva, Carlos J. daFerraz, Patrícia F. P.eng2023-06-13T13:06:49Zoai:localhost:1/40306Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-06-13T13:06:49Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Characterization of noise emitted by a power tiller through geostatistics
Caracterização do ruído emitido por um trator de rabiça por meio da geoestatística
title Characterization of noise emitted by a power tiller through geostatistics
spellingShingle Characterization of noise emitted by a power tiller through geostatistics
Gonçalves, Luana M.
Acoustic comfort
Agricultural mechanization
Spatial variability
Sine wave model
Máquinas agrícolas - Ruídos
Conforto acústico
Mecanização agrícola
Variabilidade espacial
Modelo de onda senoidal
Agricultural machinery - Noises
title_short 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_sort Characterization of noise emitted by a power tiller through geostatistics
author Gonçalves, Luana M.
author_facet Gonçalves, Luana M.
Ferraz, Gabriel A. e S.
Oliveira, Marcelo S. de
Barbosa, Brenon D. S.
Silva, Carlos J. da
Ferraz, Patrícia F. P.
author_role author
author2 Ferraz, Gabriel A. e S.
Oliveira, Marcelo S. de
Barbosa, Brenon D. S.
Silva, Carlos J. da
Ferraz, Patrícia F. P.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Gonçalves, Luana M.
Ferraz, Gabriel A. e S.
Oliveira, Marcelo S. de
Barbosa, Brenon D. S.
Silva, Carlos J. da
Ferraz, Patrícia F. P.
dc.subject.por.fl_str_mv Acoustic comfort
Agricultural mechanization
Spatial variability
Sine wave model
Máquinas agrícolas - Ruídos
Conforto acústico
Mecanização agrícola
Variabilidade espacial
Modelo de onda senoidal
Agricultural machinery - Noises
topic Acoustic comfort
Agricultural mechanization
Spatial variability
Sine wave model
Máquinas agrícolas - Ruídos
Conforto acústico
Mecanização agrícola
Variabilidade espacial
Modelo de onda senoidal
Agricultural machinery - Noises
description 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.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020-04-24T12:42:26Z
2020-04-24T12:42:26Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv GONÇALVES, L. M. et al. Characterization of noise emitted by a power tiller through geostatistics. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 23, n. 3, p. 223-228, 2019.
http://repositorio.ufla.br/jspui/handle/1/40306
identifier_str_mv GONÇALVES, L. M. et al. Characterization of noise emitted by a power tiller through geostatistics. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 23, n. 3, p. 223-228, 2019.
url http://repositorio.ufla.br/jspui/handle/1/40306
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Departamento de Engenharia Agrícola - UFCG
publisher.none.fl_str_mv Departamento de Engenharia Agrícola - UFCG
dc.source.none.fl_str_mv Revista Brasileira de Engenharia Agrícola e Ambiental
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
_version_ 1815439341309132800

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