A semi-analytical framework for predicting far-field responses of complex elastic waves emitters

Area of Science:

• Engineering and Applied Sciences
• Materials Science
• Acoustics and Ultrasonics

Background:

• Guided wave applications depend on elastic wave emitters for wave generation.
• Accurate prediction of far-field responses is critical for reliable guided wave technologies.
• Existing methods may lack generality for complex emitter geometries and substrates.

Purpose of the Study:

• To develop a versatile semi-analytical framework for predicting the far-field response of complex elastic wave emitters.
• To provide a general method applicable to arbitrary shapes, internal structures, and substrates.
• To validate the framework's accuracy through experimental comparison.

Main Methods:

• Development of a novel semi-analytical framework for wave emitter response prediction.
• Modeling of complex macro-fiber composite transducers with exact topologies.
• Experimental validation of predicted directivity patterns against measured data.

Main Results:

• The proposed framework accurately predicts the far-field response of complex wave emitters.
• Directivity patterns of macro-fiber composite transducers were successfully predicted.
• Experimental measurements confirmed the validity and accuracy of the framework's predictions.

Conclusions:

• The developed semi-analytical framework offers a versatile and accurate tool for analyzing elastic wave emitters.
• This work advances the understanding and application of guided waves in engineering and science.
• The framework's generality allows for broad applicability to various wave emitter designs and substrates.