Determination of the complex mass density of air contained in a rigid porous solid by an acoustic method

An acoustical method for determining the frequency dependent complex effective mass density p(eff) of air contained in a rigid porous solid is investigated. An apparatus was designed and built which holds an air-filled porous solid sample within a cylindrical tube capped on each end by identical moving-coil loudspeakers. A quantity of air is made to oscillate back and forth as a plug through the porous solid sample. P(eff) is obtained from pressure and acceleration measurements taken at the ends of the sample tube. A description of the apparatus and the experimental results are presented

Department dc:contributor.department

Engineering Acoustics

Grantor dc:publisher

Monterey, California. Naval Postgraduate School

Year dc:date.issued

1993

Author dc:creator

• Grundy, Kevin A.

Advisor dc:contributor.advisor

• Baker, Steven R.

Language dc:language.iso

en_US

Handle dc:identifier.uri

https://hdl.handle.net/10945/26980

OAI identifier oai:identifier

oai:calhoun.nps.edu:10945/26980