A new type ultrasonic levitation system for disc shaped objects
A new type of ultrasonic levitation system is investigated.A disc shaped object of diameter much higher than the wavelength of sound in air is levitated above an ultrasonic radiator at distances of half sound wavelengths (cm-range).Essential points on the construction of the ultrasonic system are described.The levitation force is measured at different reflector-distances.Peaks in the levitation force are observed at intervals of half wavelengths from the radiation surface.The soundwave propagation and interaction with the levitated objects is visualized experimentally using a scanning laser vibrometer.
ultrasonic levitation standing wave levitation force sound visualization
S.Zhao W.Littmann M.Klubal J.Wallaschek
Institute for Dynamics and Vibration Research,University of Hannover,30167 Hannover,GERMANY ATHENA Technologie Beratung GmbH,33106 Paderborn,GERMANY Heinz Nixdorf Institute,University of Paderbom,33102 Paderbom,GERMANY
国际会议
南京
英文
35-42
2007-09-09（万方平台首次上网日期，不代表论文的发表时间）