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Problems in the industrial application of procedures for measurement of machinery noise emission.

Simmons, D; Payne, R (2007) Problems in the industrial application of procedures for measurement of machinery noise emission. NPL Report. DQL-AC 017

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Abstract

This report examines the methods used by industry both for diagnostic measurements of noise emission of machinery and for measurements to existing current specification standards. It reviews the validity of using existing air-borne noise emission measurement methods, as specified in current specification standards for certain applications, identifying the failings and gaps in knowledge. The data analysis demonstrates particular practical measurement problems for various methods and source types, and identifies main failures of the standards and gaps in knowledge for the generic area, which require further measurements to be performed in order to identify reasons for failure.
Views and experiences of industry, on particular problems they have encountered, were sought verbally, by email and interactively using a custom-designed web page. Findings were summarised, and categorised into ‘problem areas’. It turned out that there were five main areas that cover the comments received from the survey and are grouped under, the environment (meteorological conditions); uncertainties (especially when providing guaranteed noise levels); operating conditions (load or no-load and assessment of work place noise levels); test site (size and background noise); number of measurement positions (requirement to increase or the possibility of reducing). All five areas are assessed and recommendations are provided for future research.

Item Type: Report/Guide (NPL Report)
NPL Report No.: DQL-AC 017
Subjects: Acoustics
Acoustics > Sound in Air
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/3811

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