Gradient-index phononic crystal lens-based enhancement of elastic wave energy harvesting

2016 ◽  
Vol 109 (6) ◽  
pp. 063902 ◽  
Author(s):  
S. Tol ◽  
F. L. Degertekin ◽  
A. Erturk
Keyword(s):  
Energy Harvesting ◽  
Elastic Wave ◽  
Wave Energy ◽  
Phononic Crystal ◽  
Gradient Index ◽  
Elastic Wave Energy

Dramatic Enhancement of Elastic Wave Energy Harvesting Using a Gradient-Index Phononic Crystal Lens

2016 ◽  
Author(s):  
Serife Tol ◽  
F. Levent Degertekin ◽  
Alper Erturk
Keyword(s):  
Energy Harvesting ◽  
Plane Wave ◽  
Elastic Wave ◽  
Wave Energy ◽  
Power Output ◽  
Phononic Crystal ◽  
Gradient Index ◽  
Wave Band ◽  
Wave Excitation ◽  
Elastic Wave Energy

In this paper, we explore structure-borne elastic wave energy harvesting, both numerically and experimentally, by exploiting a Gradient-Index Phononic Crystal Lens (GRIN-PCL) structure. The proposed GRIN-PCL is formed by an array of blind holes with different diameters on an aluminum plate where the orientation and size of the blind holes are tailored to obtain a hyperbolic secant gradient distribution of refractive index guided by finite-element simulations of the lowest asymmetric mode Lamb wave band diagrams. Under plane wave excitation from a line source, experimentally measured wave field successfully validates the numerical simulation of wave focusing within the GRIN-PCL domain. A piezoelectric energy harvester disk located at the first focus of the GRIN-PCL yields an order of magnitude larger power output as compared to the baseline case of energy harvesting without the GRIN-PCL on the uniform plate counterpart for the same incident plane wave excitation. The power output is further improved by a factor of five using complex electrical load impedance matching through resistive-inductive loading as compared to purely resistive loading case.

Enhanced energy transfer and conversion for high performance phononic crystal-assisted elastic wave energy harvesting

Nano Energy ◽  
2020 ◽  
Vol 78 ◽  
pp. 105226 ◽  
Author(s):  
Tae-Gon Lee ◽  
Soo-Ho Jo ◽  
Hong Min Seung ◽  
Sun-Woo Kim ◽  
Eun-Ji Kim ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Energy Harvesting ◽  
Elastic Wave ◽  
Wave Energy ◽  
High Performance ◽  
Phononic Crystal ◽  
Elastic Wave Energy

scholarly journals A Phononic Crystal with Differently Configured Double Defects for Broadband Elastic Wave Energy Localization and Harvesting

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 643
Author(s):  
Soo-Ho Jo ◽  
Byeng D. Youn
Keyword(s):  
Elastic Wave ◽  
Wave Energy ◽  
Phononic Crystal ◽  
Square Lattice ◽  
Energy Localization ◽  
Piezoelectric Patch ◽  
Single Defect ◽  
Piezoelectric Energy ◽  
Piezoelectric Effects ◽  
Elastic Wave Energy

Several previous studies have been dedicated to incorporating double defect modes of a phononic crystal (PnC) into piezoelectric energy harvesting (PEH) systems to broaden the bandwidth. However, these prior studies are limited to examining an identical configuration of the double defects. Therefore, this paper aims to propose a new design concept for PnCs that examines differently configured double defects for broadband elastic wave energy localization and harvesting. For example, a square-pillar-type unit cell is considered and a defect is considered to be a structure where one piezoelectric patch is bonded to a host square lattice in the absence of a pillar. When the double defects introduced in a PnC are sufficiently distant from each other to implement decoupling behaviors, each defect oscillates like a single independent defect. Here, by differentiating the geometric dimensions of two piezoelectric patches, the defects’ dissimilar equivalent inertia and stiffness contribute to individually manipulating defect bands that correspond to each defect. Hence, with adequately designed piezoelectric patches that consider both the piezoelectric effects on shift patterns of defect bands and the characteristics for the output electric power obtained from a single-defect case, we can successfully localize and harvest the elastic wave energy transferred in broadband frequencies.

Enhancement of elastic wave energy harvesting using adaptive piezo-lens

2017 ◽  
Vol 93 ◽  
pp. 255-266 ◽  
Author(s):  
K. Yi ◽  
M. Collet ◽  
S. Chesne ◽  
M. Monteil
Keyword(s):  
Energy Harvesting ◽  
Elastic Wave ◽  
Wave Energy ◽  
Elastic Wave Energy

Smart metacomposite-based systems for transient elastic wave energy harvesting

2017 ◽  
Vol 26 (3) ◽  
pp. 035040 ◽  
Author(s):  
K Yi ◽  
M Monteil ◽  
M Collet ◽  
S Chesne
Keyword(s):  
Energy Harvesting ◽  
Elastic Wave ◽  
Wave Energy ◽  
Elastic Wave Energy

scholarly journals Flexural wave energy harvesting by the topological interface state of a phononic crystal beam

2021 ◽  
pp. 101578
Author(s):  
Tian-Xue Ma ◽  
Quan-Shui Fan ◽  
Chuanzeng Zhang ◽  
Yue-Sheng Wang
Keyword(s):  
Energy Harvesting ◽  
Wave Energy ◽  
Phononic Crystal ◽  
Interface State ◽  
Flexural Wave
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