scholarly journals Finite amplitude method for the determination of the acoustic nonlinearity parameter B/A

1982 ◽  
Vol 72 (S1) ◽  
pp. S40-S40
Author(s):  
Wesley N. Cobb
Keyword(s):  
Finite Amplitude ◽  
Nonlinearity Parameter ◽  
Acoustic Nonlinearity Parameter ◽  
Acoustic Nonlinearity

The Influencing Factors in Acoustic Nonlinearity Parameter B/A Measurement

2011 ◽  
Vol 217-218 ◽  
pp. 419-425
Author(s):  
Sha Chen ◽  
Hai Jiang Zhu ◽  
Ping Yang
Keyword(s):  
Influencing Factors ◽  
Stop Band ◽  
Finite Amplitude ◽  
Linear Increase ◽  
Nonlinearity Parameter ◽  
Substitution Method ◽  
Acoustic Nonlinearity Parameter ◽  
Acoustic Nonlinearity ◽  
Experimental Apparatus ◽  
Multiple Frequencies

In this paper, the nonlinearity parameter B/A of ethanol has been measured under different emitted voltages, temperatures, multiple frequencies and stop-band attenuations. The experimental apparatus and technique used to measure B/A in ethanol was the finite amplitude insert-substitution method. This method was applied within the emitted voltages from 30.0 to 150.0V and at temperatures of between 22 and 45°C, and different frequencies at 1.0MHz, 2.25MHz, 3.5MHz, 5.0MHz and in attenuations from 30.0 to 120dB. Experimental results (Fig.4, Fig.5, Fig.6, Fig.7) show that: (1) The value of B/A has almost a linear increase with temperature and a linear decrease with frequency. (2) Parameter B/A is independent of the stop-band attenuations and has a little decrease with different emitted voltage.

On measurement of the acoustic nonlinearity parameter using the finite amplitude insertion substitution (FAIS) technique

Metrologia ◽  
2015 ◽  
Vol 52 (2) ◽  
pp. 406-422 ◽  
Author(s):  
Bajram Zeqiri ◽  
Ashley Cook ◽  
Lise Rétat ◽  
John Civale ◽  
Gail ter Haar
Keyword(s):  
Finite Amplitude ◽  
Nonlinearity Parameter ◽  
Acoustic Nonlinearity Parameter ◽  
Acoustic Nonlinearity
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