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ASTM E477-99

Historical Revision

Standard Test Method for Laboratory Measurements of Acoustical and Airflow Performance of Duct Liner Materials and Prefabricated Silencers

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1.1 This test method covers the laboratory testing of duct liner materials, integral ducts, and in-duct absorptive silencers used in the ventilation systems of buildings. Procedures are described for the measurement of acoustical insertion loss, airflow generated noise, and pressure drop as a function of airflow.

1.2 Excluded from the scope are reactive mufflers and those designed for uses other than in ventilation systems, such as automobile mufflers.

1.3 This test method includes a provision for a simulated semi-reflective plenum to fit around thin-walled duct and silencer test specimens, since the acoustical environments around such thin-walled specimens can affect the measured insertion loss.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


SDO ASTM: ASTM International
Document Number E477
Publication Date Oct. 10, 1999
Language en - English
Page Count 9
Revision Level 99
Supercedes
Committee E33.08
Publish Date Document Id Type View
July 1, 2020 E0477-20 Revision
June 1, 2013 E0477-13E01 Revision
June 1, 2013 E0477-13 Revision
May 1, 2006 E0477-06A Revision
Feb. 1, 2006 E0477-06 Revision
Oct. 10, 1999 E0477-99 Revision