Linear and nonlinear ultrasound time reversal using a condensing raster operation

Mechanical Systems and Signal Processing（2022）

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摘要

•A new time reversal process focusing on the condensing of multiple raster positions is presented.•Excitation of multiple points reduces captured noise and provides a cleaner wavefront for air-coupled capture.•The raster time reversal (RTR) method is proposed to accentuate modulated responses f2 + f1.

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关键词

Nonlinear ultrasound,Nonlinear imaging,Time reversal,Composites,Modulation,Defects,Damage

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