Additively manufactured acoustic diffuser structures for ultrasonic measurement applications

Measurement procedure for acoustic absorption and bulk viscosity of liquids

“…The gap between transducer and the mounting ring, although necessary, entails unwanted reverberations and resonance effects when the transducer emits acoustic waves. In an effort to suppress these unwanted effects, a stochastic structure is designed [23], i.e. prismatic elements with randomized heights are created at the ring's lower surface, causing diffuse reflections.…”