Ultrasonic Wave Propagation in Non Homogeneous Media
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Cites background from "Ultrasonic Wave Propagation in Non ..."
...As mentioned in Section 4, the RC can be obtained in the frequency domain [51,56,57,128,153–157] or in the time domain [24,51,57,128,153,154,156,157] by dividing the signal amplitude, which is reflected from the notch, by the reference amplitude signal, which is reflected from the pipe end before introducing the notch....
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Cites background or methods from "Ultrasonic Wave Propagation in Non ..."
...The dispersive signals have been obtained synthetically by forcing the A0 group delay in the [0–300] kHz frequency range to the chirped pulse represented in Fig....
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...Recent works in the area of time–frequency representations (TFRs) [5–8] show great promise for applications in non-destructive evaluation and material characterization, as a mean to interpret ultrasonic propagation in various structures....
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...In the [0–300] kHz frequency range, only the two fundamental A0 and S0 waves can propagate through this plate....
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...2(b) was generated via the above-mentioned procedure by considering only the A0 mode group velocity curve in the [0–300] kHz frequency range (represented in Fig....
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