Experiments in phononic crystal plates for negatively-refracted guided shear-horizontal waves by using magnetostrictive patch transducers

2012 ◽  
Vol 131 (4) ◽  
pp. 3327-3327
Author(s):  
Min Kyung Lee ◽  
Pyung Sik Ma ◽  
Il Kyu Lee ◽  
Hoe Woong Kim ◽  
Yoon Young Kim
Keyword(s):  
Phononic Crystal ◽  
Shear Horizontal

scholarly journals Synthetic Weyl Points of the Shear Horizontal Guided Waves in One-Dimensional Phononic Crystal Plates

2021 ◽  
Vol 12 (1) ◽  
pp. 167
Author(s):  
Hongbo Zhang ◽  
Shaobo Zhang ◽  
Jiang Liu ◽  
Bilong Liu
Keyword(s):  
Guided Waves ◽  
Dimensional Space ◽  
Phononic Crystal ◽  
Phase Interface ◽  
Three Dimensional ◽  
Interface States ◽  
Geometrical Parameters ◽  
One Dimensional ◽  
Higher Dimensional ◽  
Shear Horizontal

Weyl physics in acoustic and elastic systems has drawn extensive attention. In this paper, Weyl points of shear horizontal guided waves are realized by one-dimensional phononic crystal plates, in which one physical dimension plus two geometrical parameters constitute a synthetic three-dimensional space. Based on the finite element method, we have not only observed the synthetic Weyl points but also explored the Weyl interface states and the reflection phase vortices, which have further proved the topological phase interface states. As the first realization of three-dimensional topological phases through one-dimensional phononic crystal plates in the synthetic dimension, this research demonstrates the great potential of applicable one-dimensional plate structural systems in detecting higher-dimensional topological phenomena.

Negative refraction experiments with guided shear-horizontal waves in thin phononic crystal plates

2011 ◽  
Vol 98 (1) ◽  
pp. 011909 ◽  
Author(s):  
Min Kyung Lee ◽  
Pyung Sik Ma ◽  
Il Kyu Lee ◽  
Hoe Woong Kim ◽  
Yoon Young Kim
Keyword(s):  
Negative Refraction ◽  
Phononic Crystal ◽  
Shear Horizontal

Phononic-Crystal Acoustic Lens by Design for Energy-Transmission Devices

2012 ◽  
Vol 132 (5) ◽  
pp. 686-690
Author(s):  
Yusuke Kanno ◽  
Kenji Tsuruta ◽  
Kazuhiro Fujimori ◽  
Hideki Fukano ◽  
Shigeji Nogi
Keyword(s):  
Phononic Crystal ◽  
Energy Transmission ◽  
Acoustic Lens

Flexural Wave Band Gaps in Phononic Crystal Thick Plates with Defects

2019 ◽  
Author(s):  
Edson Jansen Pedrosa de Miranda Junior ◽  
Jose Maria Campos dos Santos
Keyword(s):  
Phononic Crystal ◽  
Band Gaps ◽  
Flexural Wave ◽  
Wave Band ◽  
Thick Plates

scholarly journals Tunable characteristics of low-frequency bandgaps in two-dimensional multivibrator phononic crystal plates under prestrain

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hai-Fei Zhu ◽  
Xiao-Wei Sun ◽  
Ting Song ◽  
Xiao-Dong Wen ◽  
Xi-Xuan Liu ◽  
...  
Keyword(s):  
Phononic Crystal ◽  
Real Life ◽  
Low Frequency ◽  
Acoustic Vibration ◽  
Crystal Plate ◽  
Frequency Noise ◽  
Two Dimensional ◽  
The Matrix ◽  
Noise Frequency ◽  
Realtime Control

AbstractIn view of the influence of variability of low-frequency noise frequency on noise prevention in real life, we present a novel two-dimensional tunable phononic crystal plate which is consisted of lead columns deposited in a silicone rubber plate with periodic holes and calculate its bandgap characteristics by finite element method. The low-frequency bandgap mechanism of the designed model is discussed simultaneously. Accordingly, the influence of geometric parameters of the phononic crystal plate on the bandgap characteristics is analyzed and the bandgap adjustability under prestretch strain is further studied. Results show that the new designed phononic crystal plate has lower bandgap starting frequency and wider bandwidth than the traditional single-sided structure, which is due to the coupling between the resonance mode of the scatterer and the long traveling wave in the matrix with the introduction of periodic holes. Applying prestretch strain to the matrix can realize active realtime control of low-frequency bandgap under slight deformation and broaden the low-frequency bandgap, which can be explained as the multiple bands tend to be flattened due to the localization degree of unit cell vibration increases with the rise of prestrain. The presented structure improves the realtime adjustability of sound isolation and vibration reduction frequency for phononic crystal in complex acoustic vibration environments.

A tunable phononic crystal system for elastic ultrasonic wave control

2021 ◽  
Vol 118 (22) ◽  
pp. 224104
Author(s):  
Yihao Song ◽  
Yanfeng Shen
Keyword(s):  
Ultrasonic Wave ◽  
Phononic Crystal ◽  
Crystal System ◽  
Wave Control

scholarly journals Machine Learning Based Corrosion-like Defect Estimation with Shear-Horizontal Guided Waves Improved by Mode Separation

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Mateus Gheorghe de Castro Ribeiro ◽  
Alan Conci Kubrusly ◽  
Helon Vicente Hultmann Ayala ◽  
Steve Dixon
Keyword(s):  
Machine Learning ◽  
Guided Waves ◽  
Mode Separation ◽  
Defect Estimation ◽  
Shear Horizontal
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