Non-linear-wave-based excitation of waves on a membrane
2019
Non-linear acoustic waves were used to excite propagating waves on a curved biological membrane. A non-contact method was used to measure the displacement of the membrane at the pickup point. The frequency content, time-of-flight, and amplitude of the wave travelling across the membrane at the measurement location were studied as a function of incidence angle of the shockwave for different pressures inside a vessel bounded by the membrane. Detecting the peak frequency of the pickup signal provided the most accurate estimate of the pressure inside the vessel.
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