Efficient focalization of antisymmetric Lamb waves in gradient-index phononic crystal plates

2012 ◽  
Vol 101 (26) ◽  
pp. 261905 ◽  
Author(s):  
Jinfeng Zhao ◽  
Rémi Marchal ◽  
Bernard Bonello ◽  
Olga Boyko
Keyword(s):  
Lamb Waves ◽  
Phononic Crystal ◽  
Gradient Index

Propagation of Lamb waves in one-dimensional radial phononic crystal plates with periodic corrugations

2014 ◽  
Vol 115 (5) ◽  
pp. 054907 ◽  
Author(s):  
Yinggang Li ◽  
Tianning Chen ◽  
Xiaopeng Wang ◽  
Kunpeng Yu ◽  
Weihua Chen
Keyword(s):  
Lamb Waves ◽  
Phononic Crystal ◽  
One Dimensional

Achromatic acoustic gradient-index phononic crystal lens for broadband focusing

2020 ◽  
Vol 116 (23) ◽  
pp. 234102
Author(s):  
Jaeyub Hyun ◽  
Wan-Ho Cho ◽  
Choon-Su Park ◽  
Jiho Chang ◽  
Miso Kim
Keyword(s):  
Phononic Crystal ◽  
Gradient Index

Negative refraction of zero order flexural Lamb waves through a two-dimensional phononic crystal

2010 ◽  
Vol 97 (12) ◽  
pp. 121919 ◽  
Author(s):  
J. Pierre ◽  
O. Boyko ◽  
L. Belliard ◽  
J. O. Vasseur ◽  
B. Bonello
Keyword(s):  
Negative Refraction ◽  
Lamb Waves ◽  
Phononic Crystal ◽  
Zero Order ◽  
Two Dimensional

Interface-guided mode of Lamb waves in a two-dimensional phononic crystal plate

2015 ◽  
Vol 24 (5) ◽  
pp. 054301 ◽  
Author(s):  
Ping-Ping Huang ◽  
Yuan-Wei Yao ◽  
Fu-Gen Wu ◽  
Xin Zhang ◽  
Jing Li ◽  
...  
Keyword(s):  
Lamb Waves ◽  
Phononic Crystal ◽  
Crystal Plate ◽  
Two Dimensional ◽  
Guided Mode

Lamb wave band gaps in one-dimensional radial phononic crystal slabs

2015 ◽  
Vol 29 (03) ◽  
pp. 1550002 ◽  
Author(s):  
Yinggang Li ◽  
Tianning Chen ◽  
Xiaopeng Wang
Keyword(s):  
Finite Element ◽  
Axial Symmetry ◽  
Lamb Wave ◽  
Lamb Waves ◽  
Phononic Crystal ◽  
Band Gaps ◽  
Slab Thickness ◽  
Wave Band ◽  
Filling Fraction ◽  
One Dimensional

In this paper, we theoretically investigate the band structures of Lamb wave in one-dimensional radial phononic crystal (PC) slabs composed of a series of alternating strips of epoxy and aluminum. The dispersion relations, the power transmission spectra and the displacement fields of the eigenmodes are calculated by using the finite element method based on two-dimensional axial symmetry models in cylindrical coordinates. The axial symmetry model is validated by three-dimensional finite element model in Cartesian coordinates. Numerical results show that the proposed radial PC slabs can yield several complete band gaps with a variable bandwidth exist for elastic waves. Furthermore, the effects of the filling fraction and the slab thickness on the band gaps are further explored numerically. It is worth observing that, with the increase of the filling fraction, both the lower and upper edges of the band gaps are simultaneously shifted to higher frequency, which results from the enhancement interaction between the rigid resonance of the scatterer and the matrix. The slab thickness is the key parameter for the existence and the width of complete band gaps in the radial PC slabs. These properties of Lamb waves in the radial PC plates can potentially be applied to optimize band gaps, generate filters and design acoustic devices in the rotary machines and structures.

Lamb waves in two-dimensional phononic crystal plate with anisotropic inclusions

Ultrasonics ◽  
2011 ◽  
Vol 51 (5) ◽  
pp. 602-605 ◽  
Author(s):  
Yuanwei Yao ◽  
Fugen Wu ◽  
Zhilin Hou ◽  
Zhang Xin
Keyword(s):  
Lamb Waves ◽  
Phononic Crystal ◽  
Crystal Plate ◽  
Two Dimensional

scholarly journals Beam path and focusing of flexural Lamb waves within phononic crystal-based acoustic lenses

2014 ◽  
Vol 16 (6) ◽  
pp. 063031 ◽  
Author(s):  
J Zhao ◽  
B Bonello ◽  
R Marchal ◽  
O Boyko
Keyword(s):  
Lamb Waves ◽  
Phononic Crystal ◽  
Beam Path
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