Prediction of ultrasonic waveforms in highly attenuating plastic materials
Abstract
In this paper frequency dependent attenuation-dispersion estimation method in highly attenuating media is described. Estimation of the attenuation law is based on material transfer function approximation in the frequency domain. Dispersion of the ultrasound velocity is calculated using iterative Kramers - Kronig causal relations from estimated attenuation and known ultrasound velocity values.
The developed method enables to predict waveform of the reflected signal. The comparison of the predicted waveform with experimental measured has showed a good correspondence in the case of plastic materials.
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