Acoustical measurements of the trapping constant of porous material

Debray, Alexis; Allard, Jean F.; Lauriks, Walter; Kelders, Luc
December 1997
Review of Scientific Instruments;Dec1997, Vol. 68 Issue 12, p4462
Academic Journal
Presents a method of acoustically measuring the trapping constant of porous materials saturated by air. Evaluation of the trapping constant from acoustical measurements of the imaginary part of the compressibility of the saturating air at low frequencies; Performance of measurements on random packings of spheres.


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