Guided Waves in a Solid Rod Embedded in Infinite Medium with Weak Interface

The dispersion relation of the infinite long rod model with a weak interface has been deduced via wave equation of the guided waves and boundary spring interface model. The dispersion characteristics of the rigid interface and the slip interface are calculated, while the effect of different axial st...

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Bibliographic Details
Published inMATEC Web of Conferences Vol. 44; p. 2012
Main Authors Tong, Zi Wei, Han, Qing Bang, Yin, Cheng, Qi, Li Hua, Zhang, Yu, Zhu, Chang Ping
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2016
Subjects
Cementation
Destructive testing
Nondestructive testing
Phase velocity
Slip
Stiffness
Stiffness coefficients
Wave dispersion
Wave equations
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Summary:The dispersion relation of the infinite long rod model with a weak interface has been deduced via wave equation of the guided waves and boundary spring interface model. The dispersion characteristics of the rigid interface and the slip interface are calculated, while the effect of different axial stiffness coefficient is also discussed. The results suggest that the phase velocity of the slip interface decreases slowly with increasing frequency at the low frequency of the L (0,1) mode. As for the weak interface, when the axial coefficient Kt is in the particular range of [1010,1014]pa/m, the interface turns from the slip interface to the rigid interface. That shows the value of axial coefficient Kt is an essential prerequisite for the non-destructive evaluation to evaluate the interface cementation degree.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/20164402012