| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Analysis of Second-Harmonic Generation of Low-Frequency Dilatational Lamb Waves in a Two-Layered Composite Plate |
| Han Chen1, Ming-Xi Deng2**, Ning Hu2, Ming-Liang Li1, Guang-Jian Gao1, Yan-Xun Xiang3** |
1Department of Physics, Army Logistics University of PLA, Chongqing 401331
2College of Aerospace Engineering, Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044
3School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237
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| Cite this article: |
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Han Chen, Ming-Xi Deng, Ning Hu et al 2018 Chin. Phys. Lett. 35 114302 |
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Abstract We analyze the effect of second-harmonic generation (SHG) of primary Lamb wave propagation in a two-layered composite plate, and then investigate the influence of interfacial properties on the said effect at low frequency. It is found that changes in the interfacial properties essentially affect the dispersion relation and then the maximum cumulative distance of the double-frequency Lamb wave generated. This will remarkably influence the efficiency of SHG. To overcome the complications arising from the inherent dispersion and multimode natures in analyzing the SHG effect of Lamb waves, the present work focuses on the analysis of the SHG effect of low-frequency dilatational Lamb wave propagation. Both the numerical analysis and finite element simulation indicate that the SHG effect of low-frequency dilatational Lamb wave propagation is found to be much more sensitive to changes in the interfacial properties than primary Lamb waves. The potential of using the SHG effect of low-frequency dilatational Lamb waves to characterize a minor change in the interfacial properties is analyzed.
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Received: 29 August 2018
Published: 23 October 2018
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| PACS: |
43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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43.25.+y
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(Nonlinear acoustics)
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43.20.Mv
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(Waveguides, wave propagation in tubes and ducts)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11834008, 11632004, 11474361 and 11622430. |
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