Results 161 to 170 of about 2,739,672 (219)
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Sound Absorption in Electrolytes
The Journal of the Acoustical Society of America, 1965Further ultrasonic-absorption measurements have been made at 104–108 cps in a number of electrolytes including iodides, chlorides, acetates, acetic acid, and mixtures of electrolytes. A number of these electrolytes exhibit interesting relaxation effects, which have been interpreted quantitatively in terms of specific ion-ion and ion-solvent ...
Ernest Yeager +2 more
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The Journal of the Acoustical Society of America, 1971
Experimental measurements of the absorption of sound in still air exhibit a distinct deviation from the theoretical predictions based on known classical and molecular absorption losses. Absorption coefficients have been measured in humid air over the humidity range of 0% to 100% relative humidity.
L. B. Evans, Louis C. Sutherland
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Experimental measurements of the absorption of sound in still air exhibit a distinct deviation from the theoretical predictions based on known classical and molecular absorption losses. Absorption coefficients have been measured in humid air over the humidity range of 0% to 100% relative humidity.
L. B. Evans, Louis C. Sutherland
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The absorption of sound in emulsions
Acoustical Physics, 2010The absorption of sound in homogeneous dilute emulsions due to the viscosity of the components of the medium is theoretically investigated. Deformation (capillary) oscillations of the emulsion droplets are taken into account. The viscous wavelength is assumed to be small compared to the droplet size, and the latter is assumed to be small compared to ...
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The Journal of the Acoustical Society of America, 1992
The present invention aims at providing a sound barrier member that will enable a sound barrier to be constructed that provides good prevention of sound transmission as well as prevention of sound reflection while remaining relatively inexpensive to produce, the sound barrier member comprising an enclosure in a generally panel like configuration having
West Philip John, Barden Ronald
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The present invention aims at providing a sound barrier member that will enable a sound barrier to be constructed that provides good prevention of sound transmission as well as prevention of sound reflection while remaining relatively inexpensive to produce, the sound barrier member comprising an enclosure in a generally panel like configuration having
West Philip John, Barden Ronald
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Sound Absorption of Hemp Fibers (Cannabis Sativa L.) Based Nonwoven Fabrics and Composites: A Review
Journal of Natural Fibers, 2020Compared to the commonly used synthetic fibrous materials, natural fiber represents an eco-friendly solution in various engineering fields. Noise control is an important application of natural fibers due to the unique acoustic characteristics. Studies on
Jiangbo Liao +2 more
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THE ABSORPTION OF SOUND IN SEDIMENTS
GEOPHYSICS, 1957Measurements were made of the attenuation of sound in compacted sediments in water using an ultrasonic wave train at frequencies in the megacycle range. Artificial sediments of glass spheres as well as marine sands have been tested and the variation of absorption with frequency, mean grain size, and concentration are illustrated.
J. Busby, E. G. Richardson
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The Journal of the Acoustical Society of America, 1958
Improved absorption results in hydrogen in the range 1 to 37 Mc/sec atmos are reported and their theoretical implications briefly reviewed.
H. D. Parbrook, W. Tempest
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Improved absorption results in hydrogen in the range 1 to 37 Mc/sec atmos are reported and their theoretical implications briefly reviewed.
H. D. Parbrook, W. Tempest
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Dynamic tunable acoustic metasurface with continuously perfect sound absorption
, 2021Acoustic metasurfaces display significant potential for controlling sound waves by using subwavelength structures. However, serious shortcomings are evident regarding the sound absorption type, exhibiting weak reconfigurability in achieving multi-band ...
Hongxing Liu, Jiuhui Wu, Fuyin Ma
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The Journal of the Acoustical Society of America, 1967
Measurements were made of the acoustical absorption introduced by various configurations of draperies into a small reverberation room. The results are presented and compared here.
William S. Thayer +2 more
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Measurements were made of the acoustical absorption introduced by various configurations of draperies into a small reverberation room. The results are presented and compared here.
William S. Thayer +2 more
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Absorption of sound in sea water
Ultrasonics, 1963Laboratory and field data on the absorption of sound in sea- water are reviewed in the light of modern theory, including effects of pressure, temperature and salinity. The effects of temperature and MgSO4 salt concentration appear to be compatible from one investigator to another.
M. Schulkin, H.W. Marsh
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