Influence of bubble content and spacing of agar gel on ultrasonic attenuation characteristics
Firstly,based on acoustic detection technology,influence of bubble in agar gel on ultrasonic wave propagation is studied by transmission method.Secondly,the acoustic simulation of ultrasonic propagation of bubble agar gel is carried out by finite element software.The results of the experiment are compared with the simulation results.The results agree well with each other.The effect of bubble size,quantity and spacing on ultrasonic attenuation is analyzed,respectively.The results show that when the bubble content changes,absorption attenuation plays a major role in ultrasonic attenuation;when the bubble content is constant,the change of bubble spacing has a significant impact on the propagation of ultrasonic wave.With the increase of spacing,the sound attenuation gradually increases and decreases with the increase of frequency.
agar gelbubblesound attenuationfinite element simulation
万方数据
维普
