Amplitude distribution and cavitation corrosion field of ultrasonic transducer system
Zhang-min, LI Xiao-qian, Jiang Ri-peng, Guo Cheng-xi
Key Laboratory of Modern Complex Equipment Design and Extreme Manufacturing,Ministry of State; School of Mechanical and Electrical Engineering; Central South University, Changsha 410083, China
Abstract：Vibration test was done for a piezoelectric ultrasonic transducer for casting by laser range finder, the displacement amplitude distribution of end and cylindrical surface was gained through amplitude spectrum correction for the vibration series based on interpolation method. The test results show that longitudinal vibration was the major vibration and there existed crossbar coupling in ultrasound system vibration. The results of the cavitation corrosion experiment of the radiator indicated that the corrosion on end surface was uniform but on cylindrical surface it was occurred on the area where the amplitude was over 2.2um. Calculation indicated that cavitation threshold in aluminum alloy 7050 at temperature 700℃ was 1.1Mpa.
2014, Vol. 33 
