A time-domain model and experimental validation of the acoustic field radiated by air-coupled transducers

摘要

Highlights?A time-domain model of an air-coupled, non-contact, ultrasonic setup, is proposed.?The receiver size and the attenuation in air are modelled.?The prediction error is evaluated experimentally and is smaller than 1%.?The experimental recovery of the system’s electric response is proposed.?Different planar and quasi planar (i.e. focussing) transducers can be modelled.AbstractThis paper presents a time-domain model for the prediction of an acoustic field in an air-coupled, non-contact, ultrasonic setup, which includes an air-coupledEmitter, thePropagation space and an air-coupledReceiver (EPR). The model takes into account the finite size of the aperture receiver, attenuation in air, and the electric response of the emitter-receiver set