Excitation Mechanism of Flexural-Guided Wave Modes F(1, 2) and F(1, 3) in Pipes

Excitation Mechanism of Flexural-Guided Wave Modes F(1, 2) and F(1, 3) in Pipes The L(0, 2) and T(0, 1) modes are the two most commonly used modes in a pipe inspection; however, they are insensitive to axial cracks in the pipe. Therefore, it is meaningful to explore the excitation and utilization of the guided wave modes, which are different from the L(0, 2) and T(0, 1) modes. In this study, the excitation mechanism of two kinds of flexural-guided wave modes, F(1, 2) and F(1, 3), in a pipe is discussed in detail. The discussion is based on the dynamic response solution, which is obtained by the eigenfunction expansion method. Either mode can be excited by employing two transducer arrays. Each array is composed of sixteen elements. Moreover, the position, vibration direction, and phase of each element should be appropriately chosen. The validity of the excitation method is demonstrated by the numerical results obtained using the finite element method. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Nondestructive Evaluation Springer Journals

Excitation Mechanism of Flexural-Guided Wave Modes F(1, 2) and F(1, 3) in Pipes

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC
Subject
Engineering; Structural Mechanics; Characterization and Evaluation of Materials; Vibration, Dynamical Systems, Control; Classical Mechanics
ISSN
0195-9298
eISSN
1573-4862
D.O.I.
10.1007/s10921-017-0438-0
Publisher site
See Article on Publisher Site

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