Air-coupled method to investigate the lowest-order antisymmetric Lamb mode in stubbed and air-drilled phononic plates | Zendy

Zhang Dongbo | Zendy; Jinfeng Zhao | Zendy; Bernard Bonello | Zendy; Libing Li | Zendy; Jianxin Wei | Zendy; Yongdong Pan | Zendy; Zheng Zhong | Zendy

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Air-coupled method to investigate the lowest-order antisymmetric Lamb mode in stubbed and air-drilled phononic plates

Author(s) -

Zhang Dongbo,

Jinfeng Zhao,

Bernard Bonello,

Libing Li,

Jianxin Wei,

Yongdong Pan,

Zheng Zhong

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4962222

Subject(s) - antisymmetric relation , materials science , optics , band gap , lamb waves , resonance (particle physics) , ultrasonic sensor , bragg's law , mode (computer interface) , acoustics , physics , surface wave , optoelectronics , atomic physics , diffraction , computer science , operating system , mathematical physics

In this work, we applied a robust and fully air-coupled method to investigate the propagation of the lowest-order antisymmetric Lamb (A0) mode in both a stubbed and an air-drilled phononic-crystal (PC) plate. By measuring simply the radiative acoustic waves of A0 mode close to the plate surface, we observed the band gaps for the stubbed PC plate caused by either the local resonance or the Bragg scattering, in frequency ranges in good agreement with theoretical predictions. We measured then the complete band gap of A0 mode for the air-drilled PC plate, in good agreement with the band structures. Finally, we compared the measurements made using the air-coupled method with those obtained by the laser ultrasonic technique

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