High-intensity airborne ultrasound
High-intensity air-borne ultrasound is used in various technical fields, for example in the atomisation of liquids. High sound pressures are required to atomise higher-viscosity liquids such as paints or adhesives. As part of the UltraDis project, a standing-wave atomisation system was developed which was capable of atomising liquids with viscosities of up to approximately 100 Pa s. Through geometric optimisation and adjustment of the distance between the transducer and the reflector, sound pressures of up to 180 dB were achieved.
