Accession Number : AD0712412
Title : MEASUREMENT OF SOUND VELOCITY IN A SOLID-GAS MIXTURE
Descriptive Note : Final rept.
Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OH
Personal Author(s) : Turman, B N
Report Date : Jul 1970
Pagination or Media Count : 50
Abstract : Velocity of sound through a two-component (solid-gas) medium was measured as a function of solid particle concentration. A method was devised in which phase angle between a sound source signal and microphone signal could be measured as a function of solid particle density in the apparatus. Acoustical theory provided the necessary relationship between phase angle, density, and sound velocity. Sound velocity in the two-component medium was measured over a particle volume fraction range from 0.0001 to 0.5. The possibility of using this technique as a diagnostic instrument is discussed.
Descriptors : *SOUND TRANSMISSION , VELOCITY , POWDERS , SHOCK WAVES , FLOW FIELDS , COLLOIDS , MICROPHONES , TWO PHASE FLOW , LOUDSPEAKERS , ACOUSTIC IMPEDANCE
Subject Categories : Acoustics
Distribution Statement : APPROVED FOR PUBLIC RELEASE