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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2016, Vol. 17 Issue (3): 215-229    DOI: 10.1631/jzus.A1500184
Articles     
Excitation of axisymmetric and non-axisymmetric guided waves in elastic hollow cylinders by magnetostrictive transducers
Xiao-wei Zhang, Zhi-feng Tang, Fu-zai Lv, Xiao-hong Pan
Institute of Modern Manufacture Engineering, Zhejiang University, Hangzhou 310027, China; Institute of Advanced Digital Technologies and Instrumentation, Zhejiang University, Hangzhou 310027, China
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Abstract  Ultrasonic guided waves have been successfully applied in nondestructive evaluation (NDE) and structural health monitoring (SHM) of pressure vessels and pipelines due to their advantages, such as long detection range and high inspection efficiency. Compared with other ultrasonic guided wave actuators, magnetostrictive transducers are more cost-effective, involve simpler fabrication process, and have higher possible transduction efficiency. The normal mode expansion (NME) method is adopted to analyze the forced response and perturbation analysis of elastic hollow cylinders with respect to magnetostrictive loadings, including partial loading, axial array loading, and circular array loading. The phase velocity and frequency spectra of axisymmetric/non-axisymmetric guided waves excited by magnetostrictive transducers are analyzed. The theoretically predicted trends are verified by finite element numerical simulations and experiments.

Key words： Guided waves      Hollow cylinder      Normal mode expansion (NME)      Magnetostriction     
Received: 21 June 2015      Published: 07 March 2016
CLC:  TB559  
  O347  
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Xiao-wei Zhang
Zhi-feng Tang
Fu-zai Lv
Xiao-hong Pan
Cite this article:

Xiao-wei Zhang, Zhi-feng Tang, Fu-zai Lv, Xiao-hong Pan. Excitation of axisymmetric and non-axisymmetric guided waves in elastic hollow cylinders by magnetostrictive transducers. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2016, 17(3): 215-229.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1500184     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2016/V17/I3/215

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