This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Reducing the Uncertainty of Sound Absorption Measurements Using the Impedance Tube Method
Technical Paper
2013-01-1965
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The measurement of sound absorption coefficient (SAC) of porous materials is covered by both American and international standards. However, by using the standards alone it is difficult to achieve consistently repeatable results given the large number of variables such as sample cutting and preparation, sample fit and position in the tube, and sample material variability. This paper will review the standards briefly and examine what is available in the literature to guide users in making consistently repeatable SAC measurements. The paper will also show some of the authors' results and interpret these results in light of the standards and technical literature on the subject.
Recommended Content
| Aerospace Standard | WRENCHING CONFIGURATION, BI-HEXAGONAL (12 POINT) DRIVE, DESIGN STANDARD FOR |
| Technical Paper | Concurrent Product/Process Development: A Key to Competitiveness |
| Aerospace Material Specification | Stress-Rupture Properties of Castings |
Topic
Citation
Hua, X. and Herrin, D., "Reducing the Uncertainty of Sound Absorption Measurements Using the Impedance Tube Method," SAE Technical Paper 2013-01-1965, 2013, https://doi.org/10.4271/2013-01-1965.Also In
References
- ISO Standard Acoustics - Determination of sound absorption coefficient and impedance in impedance tubes - Part 2: Transfer-function method ISO 10534-2 1998 International Organization for Standardization Geneva
- ASTM Standard Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System ASTM E1050-10 American National Standards Institute New York City
- ACUPRO Measurement System Spectronics, Inc. USA www.spectronics.net
- Ver , I. L. and Beranek , L. L. Noise and Vibration Control Engineering, Principles and Applications John Wiley & Sons 2005
- Eriksson , L. J. Higher Order Mode Effects in Circular Ducts and Expansion Chambers J. Acoust. Soc. Am. 68 2 545 550 1980
- Stanley , Dan R. Impedance Tube Specimen Preparation and Mounting Issues Proceedings, Internoise 2012 New York City 19 22 August 2012
- Best Practices Manual: A Guide to Making Effective Measurements of Sound Absorption Coefficient Spectronics, Inc. USA 2012
- Song , Bryan H and Bolton , J. Stuart Effect of Circumferential Edge Constraint on the Acoustical Properties of Glass Fiber Materials J. Acoust. Soc. Am. 110 6 2902 2916 2001
- Kino , Naoki and Ueno , Takayasu Investigation of Sample Size Effects in Impedance Tube Measurements Applied Acoustics 68 1485 1493 2007