Article | REF: BM6116 V1

Pneumatic power - Acoustic characterization of exhaust silencers

Authors: Xavier CARNIEL, Said CHABANE, Sylvie SESMAT

Publication date: November 10, 2020 | Lire en français

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6. Glossary

anechoic chamber; chambre anéchoïque

A soundproof room, i.e. one that is isolated from external noise and in which sound reflections off the walls are limited. It is said to be semi-anechoic when the floor is reflective.

conductance; conductance

Measures the ability of a pneumatic component or pipe to conduct a gas flow. Expressed in m ³ .s ^-1 .Pa ^-1 (ANR for Atmosphère Normalisée de Référence).

conductance sonique; sonic conductance

Conductance in the sonic flow region. Expressed in m ³ .s ^-1 .Pa ^-1...

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Bibliography

(1) - DONALDSON (C.D.), SNEDEKER (R.S.) - A study of free jet impingement. Part 1. Mean properties of free and impinging jets. - Journal of Fluid Mechanics, vol. 45, part 2, p. 281-319 (1971).
(2) - TANNA (H.K.) - An experimental study of jet noise, part 2....

Regulations

Directive 2006/42/EC of the European Parliament and of the Council of May 17, 2006, on machinery, and amending Directive 95/16/EC.

Directive 2003/10/EC of the European Parliament and of the Council of February 6, 2003, on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (noise).

Standards and norms

Acoustics – Noise from machinery and equipment – Guide to using the basic standards for determining emission sound pressure levels at workstations and other specified positions. - NF EN ISO 11200 - juillet 2014
Acoustics – Noise from machinery and equipment – Determination of emission sound pressure levels at the workstation and at other specified positions under conditions approaching those of the free field on...