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- W2606770138 abstract "In this paper, we explore 3D-printed Gradient-Index Phononic Crystal Lens (GRIN-PCL) for structure-borne focusingboth numerically and experimentally. The proposed lens consists of an array of nylon stubs with different heights whichis fabricated by 3D printing the PA2200 nylon. The orientation and height of the stubs are determined according to thehyperbolic secant gradient distribution of refractive index which is guided by finite-element simulations of the lowestasymmetric mode Lamb wave band diagrams. The fabricated lens is then bonded to an aluminum plate to focus the waveenergy in the structure. The wave focusing performance is simulated in COMSOL Multiphysics® under plane waveexcitation from a line source indicating that the focal points are consistent with the analytical beam trajectory results.Experiments are conducted with a scanning laser vibrometer and experimentally measured wave field successfullyvalidates the numerical simulation of wave focusing within the 3D-printed GRIN-PCL domain. With a piezoelectricenergy harvester disk located at the focal region of the GRIN-PCL larger power output is obtained as compared to thebaseline case of energy harvesting without the GRIN-PCL on the uniform plate counterpart for the same incident planewave excitation." @default.
- W2606770138 created "2017-04-28" @default.
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- W2606770138 date "2017-04-11" @default.
- W2606770138 modified "2023-09-23" @default.
- W2606770138 title "3D-printed lens for structure-borne wave focusing and energy harvesting" @default.
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- W2606770138 doi "https://doi.org/10.1117/12.2260348" @default.
- W2606770138 hasPublicationYear "2017" @default.
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