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- W2364752586 abstract "For resolving the negative affect of dispersion and multi-mode characteristics of guide wave in tube defect detection,a single mode narrow-band guide wave should be excited through narrowband excitation and wavelength tuning method.The choice of guided wave excitation mode and excitation frequency relys on the guided wave dispersion characteristic curve analysis.For relieving the problem of low efficiency in use of traditional root-finding approach for dispersion characteristic and the impact of high temperature to dispersion characteristic,the dispersion characteristic equations of the axially symmetric guided wave in tube considering the impact of high-temperature were derived based on the Navier displacement equations and the temperature-dependent material properties model.Then,guided wave dispersion characteristic was rapidly acquired by the spectral method,and the corresponding algorithm and a graphical user interface were also designed to facilitate the analysis.The dispersion curves of the axially symmetric guided wave were drawn from the numerical results by the root-finding approach and the spectral method at two kind temperature conditions.On one hand,data obtained by these two methods were well matched;on theother hand,the spectral approach shows to possess higher analytical efficiency than that of the root-finding approach.The spectral approach for axially symmetric guided wave in high-temperature tube can help for detection parameter selecting and subsequent signal analysis." @default.
- W2364752586 created "2016-06-24" @default.
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- W2364752586 date "2014-01-01" @default.
- W2364752586 modified "2023-09-23" @default.
- W2364752586 title "Spectral method on exploring dispersion characteristics of axially symmetric guided waves in high-temperature tube" @default.
- W2364752586 hasPublicationYear "2014" @default.
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