Zhang Yundian

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The piezoelectric transducer plays a key role in the ultrasonic equipment. In the assembly process of piezoelectric transducer with traditional method, the torsion and the pressure have some fluctuations, and as a result, in the process of using the piezoelectric transducer, the electric-acoustic transformation efficiency of the piezoelectric transducer(More)
Traditional reactor has many disadvantages such as low efficiency, complicated structure and unstable system, which are unfavourable to chemical production. This paper introduces the design principle of acoustical system of circulatory multi-step ultrasonic reactor. According to the chemical reaction, the acoustical system was designed and analyzed by FEM(More)
Aiming at complex shape of cylinder with multiple diagonal slits and difficult to processing using traditional processing method. the paper adopt two methods of EMD shaping and trajectory to processing slits of cylinder with multiple diagonal slits. Compared the processing quality of two processing method by the following aspects, such as the electrode(More)
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