Abstract:Aimed at the design of online ultrasonic wear debris transducer, time domain KZK equation was utilized to simulate the sound field of ultrasonic transducer. The relationship between the sound field and the key transducer parameters, ie. the radius, the focal length and the center frequency of transducer was analyzed. The simulation results show that the sound pressure is decreased and the focal spot is increased with the increase of the focal length of transducer. Along the increasing of transducer radius, the sound pressure is increased first and then decreased, while the focal spot changes in opposite trend. Along the increasing of the center frequency, the focal spot tends to be smaller, and the sound pressure is increased first and then decreased. There is a great difference between the calculation results of the KZK and the empirical formula, which should be considered when designing ultrasonic wear debris transducer.