A technique for measuring velocity and attenuation of ultrasound in liquid foams

作者：Pierre J^*; Elias F; Leroy V

来源：Ultrasonics, 2013, 53(2): 622-629.

DOI：10.1016/j.ultras.2012.10.011

• Liquid foams
• Ultrasonic setup
• Air-coupled ultrasound

We describe an experimental setup specifically designed for measuring the ultrasonic transmission through liquid foams, over a broad range of frequencies (60-600 kHz). The question of determining the ultrasonic properties of the foam (density, phase velocity and attenuation) from the transmission measurements is addressed. An inversion method is proposed, tested on synthetic data, and applied to a liquid foam at different times during the coarsening. The ultrasonic velocity and attenuation are found to be very sensitive to the foam bubble sizes, suggesting that a spectroscopy technique could be developed for liquid foams.

• 出版日期2013-2