420 減肉計測のためのパイプの肉厚外径比による円筒波の速度分散関係に関する考察

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  • Dispersion relation of hollow cylindrical guided waves as a function of the ratio of diameter to thickness for the measurement of pipe wall thickness

抄録

Dispersion relations of the hollow cylindrical guided waves (HCGW) for different ratio of diameter to thickness of pipe are experimentally verified in comparison with the theory. Wavelet transform was employed to obtain the Time-Frequency representation. It was shown that the L (0,2) mode have a dominant role to determine the group velocity of the Primary wave of the HCGW.

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