Design and Fabrication of a Longitudinal-Torsional Ultrasonic Transducer

Subject Areas :

Yahya Radi Najafabadi ¹ , Reza Nosouhi ² , Frahad Sajajid ³

1 - Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran|Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
2 - Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran|Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
3 - Central Workshop, Phase 1, SPGC Company, Asaluyeh, Iran

Received: 2016-12-23 Accepted : 2017-05-02 Published : 2017-02-01

Keywords: ABAQUS, numerical simulation, Piezoelectric, transducer, Longitudinal-Torsional,

Abstract :

A hybrid longitudinal-torsional ultrasonic transducer is designed and fabricated in this research. Thedesign of the transducer was performed using the FE method with ABAQUS software, with the aimof combining the longitudinal and torsional vibration modes. The transducer horn is then fabricatedusing a 4-axis milling machine. The PZT stacks are employed in order to excite the transducer. Thetransducer body is fabricated with grade 5 titanium for its appropriate mechanical properties. Thetransducer is then assembled and the experimental tests are carried out to measure the vibrationamplitude in both longitudinal and torsional directions using an Eddy current displacement sensor.Theresults showed that the resonance frequencies of both the torsional and longitudinal modes arethe same and experimental results are in good agreement with the FE results. The transducer can beused as a vibration tool for vibration assisted drilling which can produce both longitudinal andtorsional vibrations.