TY - GEN
T1 - Effects of Imperfect Interface on the Dispersion Curves of Torsional Waves in a Composite Hollow Cylinder
AU - Wang, Junzhen
AU - Qu, Jianmin
N1 - Publisher Copyright:
© 2023 by DEStech Publi cations, Inc. All rights reserved
PY - 2023
Y1 - 2023
N2 - This paper investigates the influence of interfacial imperfections on the dispersion relationship of torsional waves in a composite hollow cylinder. The imperfect interface between the inner and outer tubes is modelled by a linear spring interface model, where tractions are continuous across the interface and the displacement jump is assumed to be proportional to the tangential shear stress acting on the interface. The dispersion curves of normalized frequency as a function of normalized wavenumber can be determined by solving an eigenvalue problem. It is shown that for a fixed wavenumber, the modal frequency decreases with increasing interfacial spring compliance, especially for smaller wavenumbers. Besides, at larger wavenumbers, the loss of perfect continuity at the interface has a reduced impact. The thickness effect of the outer tube is further analyzed. The computational results indicate that the modal frequency rises in the case of the thinner coating layer. These torsional wave propagation features may provide insights and guidelines for nondestructive evaluation of composite hollow cylinders with imperfect interfaces. The paper finishes with a summary and concluding remarks.
AB - This paper investigates the influence of interfacial imperfections on the dispersion relationship of torsional waves in a composite hollow cylinder. The imperfect interface between the inner and outer tubes is modelled by a linear spring interface model, where tractions are continuous across the interface and the displacement jump is assumed to be proportional to the tangential shear stress acting on the interface. The dispersion curves of normalized frequency as a function of normalized wavenumber can be determined by solving an eigenvalue problem. It is shown that for a fixed wavenumber, the modal frequency decreases with increasing interfacial spring compliance, especially for smaller wavenumbers. Besides, at larger wavenumbers, the loss of perfect continuity at the interface has a reduced impact. The thickness effect of the outer tube is further analyzed. The computational results indicate that the modal frequency rises in the case of the thinner coating layer. These torsional wave propagation features may provide insights and guidelines for nondestructive evaluation of composite hollow cylinders with imperfect interfaces. The paper finishes with a summary and concluding remarks.
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M3 - Conference contribution
AN - SCOPUS:85182255545
T3 - Structural Health Monitoring 2023: Designing SHM for Sustainability, Maintainability, and Reliability - Proceedings of the 14th International Workshop on Structural Health Monitoring
SP - 1827
EP - 1835
BT - Structural Health Monitoring 2023
A2 - Farhangdoust, Saman
A2 - Guemes, Alfredo
A2 - Chang, Fu-Kuo
T2 - 14th International Workshop on Structural Health Monitoring: Designing SHM for Sustainability, Maintainability, and Reliability, IWSHM 2023
Y2 - 12 September 2023 through 14 September 2023
ER -