✦ LIBER ✦
Empirical relations between acoustical properties and flow resistivity of porous plastic open-cell foam
✍ Scribed by Wu Qunli
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 280 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0003-682X
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✦ Synopsis
A BS TRA C T Based on an analysis of a large amount of experimental data, the empirical relations between the characteristic impedance and propagation constant of porous plastic open-cell foams and the unit-depth flow resistivity are established. It is found that the correlation coefficients of acoustical properties of foams with the unit-depth flow resistivity have values up to 0.99.
A comparison of the results with Delany and Dunn's studies of fibrous and foam materials is made.