Two-dimensional electroacoustic model of transducer array based on 1-3 piezocomposite materials

Area of Science:

• Materials Science
• Acoustics
• Piezoelectric Devices

Background:

• Piezocomposite arrays are crucial for various electroacoustic applications.
• Accurate modeling of their behavior is essential for device optimization.
• Existing models may not fully capture the complex electroacoustic response.

Purpose of the Study:

• To develop an analytical model for predicting the electroacoustic response and directivity of 1-D piezocomposite arrays.
• To provide a theoretical framework for understanding wave propagation in multilayered piezocomposite structures.
• To enable simultaneous prediction of key performance metrics.

Main Methods:

• Utilized guided wave theory for a multilayered structure, treating the piezocomposite as a homogeneous plate.
• Employed a matrix method to simulate surface displacement fields upon electrical excitation.
• Manufactured a test device for experimental characterization.

Main Results:

• Experimental measurements of displacement were performed using laser interferometry in air and water.
• The model successfully predicted the elementary electroacoustic response.
• The predicted directivity patterns showed good agreement with experimental data.

Conclusions:

• The presented analytical model accurately predicts the electroacoustic response and directivity of 1-D piezocomposite arrays.
• The theoretical approach based on guided wave theory is validated by experimental results.
• This model serves as a valuable tool for the design and optimization of piezocomposite devices.