Study on the compound multifrequency ultrasonic transducer in flexural vibration

Area of Science:

• Acoustics
• Materials Science
• Mechanical Engineering

Background:

• Traditional ultrasonic transducers often operate at a single frequency, limiting their application scope.
• Achieving multifrequency operation typically requires complex designs or multiple individual transducers.

Purpose of the Study:

• To analyze a novel compound multifrequency ultrasonic transducer design.
• To investigate the coupling mechanism responsible for multifrequency generation.
• To validate the design through simulation and experimental measurements.

Main Methods:

• Finite Element Method (FEM) simulations using ANSYS for modal and harmonic response analysis.
• Design and fabrication of prototype compound multifrequency ultrasonic transducers.
• Experimental measurement of resonance frequencies and comparison with numerical results.

Main Results:

• The compound multifrequency ultrasonic transducer exhibits several distinct resonance frequencies.
• FEM simulations accurately predicted the modal shapes and harmonic responses.
• Experimental measurements closely matched the simulated resonance frequencies.
• Geometrical dimensions and transducer placement significantly influence multifrequency characteristics.

Conclusions:

• The developed compound multifrequency ultrasonic transducer successfully achieves multiple resonance frequencies.
• The coupled vibration between sandwiched transducers and the radiator is key to multifrequency performance.
• This design offers a promising approach for advanced ultrasonic applications requiring multifrequency capabilities.