Uncertainty estimation for impact noise tests: equipment position in field measurements

Uncertainty estimation for impact noise tests: equipment position in field measurements

The metrological accuracy on acoustic field measurements of buildings is a current issue that needs extensive discussion due to the fact that the variables involved may challenge their results. In this sense, this paper analyzes the uncertainty of field measurements of impact noise. The focus of the...

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Main Authors: Nunes, Maria Fernanda de Oliveira, Jorge, Vanessa, Pagnussat, Daniel Tregnago
Formato: Online
Idioma:por
Publicado: Universidade Estadual de Campinas 2014
Acceso en liña:https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8634535
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id oai:ojs.periodicos.sbu.unicamp.br:article-8634535
record_format ojs
institution Universidade Estadual de Campinas
collection OJS
language por
format Online
author Nunes, Maria Fernanda de Oliveira
Jorge, Vanessa
Pagnussat, Daniel Tregnago
spellingShingle Nunes, Maria Fernanda de Oliveira
Jorge, Vanessa
Pagnussat, Daniel Tregnago
Uncertainty estimation for impact noise tests: equipment position in field measurements
author_facet Nunes, Maria Fernanda de Oliveira
Jorge, Vanessa
Pagnussat, Daniel Tregnago
author_sort Nunes, Maria Fernanda de Oliveira
title Uncertainty estimation for impact noise tests: equipment position in field measurements
title_short Uncertainty estimation for impact noise tests: equipment position in field measurements
title_full Uncertainty estimation for impact noise tests: equipment position in field measurements
title_fullStr Uncertainty estimation for impact noise tests: equipment position in field measurements
title_full_unstemmed Uncertainty estimation for impact noise tests: equipment position in field measurements
title_sort uncertainty estimation for impact noise tests: equipment position in field measurements
description The metrological accuracy on acoustic field measurements of buildings is a current issue that needs extensive discussion due to the fact that the variables involved may challenge their results. In this sense, this paper analyzes the uncertainty of field measurements of impact noise. The focus of the study is the analysis of the influence of equipment positioning. The measurements were performed according to ISO 140-7 and ISO 140-14 standards in two rooms, one above the other, separated by a 10 cm massive concrete slab. Two groups with different positions of the tapping machine and the microphone were considered: minimum distance of the walls defined by ISO standards and centralized points on the floor. The variations in the positioning of the equipment generated 64 results of sound levels in the reception room, divided into four groups of results, from measurements in the frequency range between 100 and 3,150 Hz. The methods used were based on ISO 12999-1 standard and RELACRE/Portugal Guide, which express the uncertainties of acoustic measurements in buildings in different ways. The results are presented as examples of the application of previously tested floor systems with different acoustic behaviors and, consequently, with different weighted normalized impact sound pressure level of the measured values corrected by the estimated uncertainty. In this study, it was demonstrated and quantified the influence of equipment positioning on the results of field measurements of impact noise in floor systems.
publisher Universidade Estadual de Campinas
publishDate 2014
url https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8634535
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AT pagnussatdanieltregnago uncertaintyestimationforimpactnoisetestsequipmentpositioninfieldmeasurements
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AT jorgevanessa estimativadeincertezaemensaiosderuidodeimpactoposicaodosequipamentosemmedicoesemcampo
AT pagnussatdanieltregnago estimativadeincertezaemensaiosderuidodeimpactoposicaodosequipamentosemmedicoesemcampo
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spelling oai:ojs.periodicos.sbu.unicamp.br:article-86345352019-06-17T15:21:11Z Uncertainty estimation for impact noise tests: equipment position in field measurements Estimativa de incerteza em ensaios de ruído de impacto: posição dos equipamentos em medições em campo Nunes, Maria Fernanda de Oliveira Jorge, Vanessa Pagnussat, Daniel Tregnago Impact Noise. Uncertainty in Measurements. Building Acoustics. Ruído de Impacto. Incerteza em Medições. Acústica de Edifícios. The metrological accuracy on acoustic field measurements of buildings is a current issue that needs extensive discussion due to the fact that the variables involved may challenge their results. In this sense, this paper analyzes the uncertainty of field measurements of impact noise. The focus of the study is the analysis of the influence of equipment positioning. The measurements were performed according to ISO 140-7 and ISO 140-14 standards in two rooms, one above the other, separated by a 10 cm massive concrete slab. Two groups with different positions of the tapping machine and the microphone were considered: minimum distance of the walls defined by ISO standards and centralized points on the floor. The variations in the positioning of the equipment generated 64 results of sound levels in the reception room, divided into four groups of results, from measurements in the frequency range between 100 and 3,150 Hz. The methods used were based on ISO 12999-1 standard and RELACRE/Portugal Guide, which express the uncertainties of acoustic measurements in buildings in different ways. The results are presented as examples of the application of previously tested floor systems with different acoustic behaviors and, consequently, with different weighted normalized impact sound pressure level of the measured values corrected by the estimated uncertainty. In this study, it was demonstrated and quantified the influence of equipment positioning on the results of field measurements of impact noise in floor systems. A precisão metrológica em ensaios em campo de acústica de edifícios é uma questão atual, com necessidade ampla discussão sobre as variáveis envolvidas que podem gerar dúvidas nos resultados. Nesse contexto, este trabalho analisa as incertezas de medições de ruído de impacto em campo. O foco do trabalho é a análise da influência do posicionamento dos equipamentos. As medições foram realizadas conforme as normas ISO 140-7 e ISO 140-14 em duas salas sobrepostas, separadas por uma laje de concreto maciço de 10cm de espessura. Foram consideradas dois grupos de variações no posicionamento da máquina de impactos e do microfone: distâncias mínimas das paredes definidas nas normas ISO e pontos centralizados no piso. As variações no posicionamento dos equipamentos geraram 64 resultados de níveis sonoros na sala de recepção, divididos em quatro grupos de resultados, a partir das medições na faixa de frequência entre 100 e 3.150 Hz. Para as análises foram utilizados os métodos da norma ISO 12999-1 e do Guia RELACRE/Portugal que expressam de formas diferentes as incertezas de medições acústicas em edificações. Os resultados são apresentados na forma de exemplos de aplicação em sistemas pisos ensaiados anteriormente, com diferentes comportamentos acústicos e consequentemente, com valores distintos de níveis de ruído de impacto padronizados ponderados corrigidos pela incerteza estimada. Neste estudo foi evidenciada e quantificada a influência do posicionamento dos equipamentos nos resultados de ensaios de ruído de impacto em campo. Universidade Estadual de Campinas 2014-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Field study Pesquisa experimental. Pesquisa empírica de campo. application/pdf https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8634535 10.20396/parc.v5i2.8634535 PARC Pesquisa em Arquitetura e Construção; Vol. 5 No. 2 (2014): Acoustic quality of the built environment; 22-30 PARC Pesquisa em Arquitetura e Construção; Vol. 5 Núm. 2 (2014): Qualidade acústica do ambiente construído; 22-30 PARC Pesquisa em Arquitetura e Construção; v. 5 n. 2 (2014): Qualidade acústica do ambiente construído; 22-30 1980-6809 por https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8634535/2456 Copyright (c) 2018 PARC Pesquisa em Arquitetura e Construção

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