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Precise and target-oriented control of the low-frequency Lamb wave bandgaps. Y Wang, C Zhang, W Chen, Z Li, MV Golub, SI Fomenko. Journal of Sound and Vibration, 116367. , 2021. 20. 2021. The effect of cubic material nonlinearity on the propagation of torsional wave modes in a pipe. Y Wang, JD Achenbach. contoh rpp kurikulum merdeka