W
Waleed Al-Ashtari
Researcher at University of Paderborn
Publications - 13
Citations - 193
Waleed Al-Ashtari is an academic researcher from University of Paderborn. The author has contributed to research in topics: Energy harvesting & Piezoelectricity. The author has an hindex of 5, co-authored 13 publications receiving 162 citations. Previous affiliations of Waleed Al-Ashtari include University of Baghdad.
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Frequency tuning of piezoelectric energy harvesters by magnetic force
TL;DR: In this article, the authors describe the design and testing of a vibration energy harvester with tunable resonance frequency, wherein the tuning is accomplished by changing the attraction force between two permanent magnets by adjusting the distance between the magnets.
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Enhanced energy harvesting using multiple piezoelectric elements: Theory and experiments
TL;DR: In this paper, a novel energy harvesting cantilever array with magnetic tuning including three piezoelectric bimorphs is investigated theoretically and experimentally, with a good agreement between model and experiment.
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Analytical determination of characteristic frequencies and equivalent circuit parameters of a piezoelectric bimorph
TL;DR: A better understanding of the influence of material properties and geometrical design on the performance of piezoelectric structures can be found in this article, where the authors present a more detailed analysis of the relationship between material properties, geometry, and material properties.
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Increasing the power of piezoelectric energy harvesters by magnetic stiffening
TL;DR: In this paper, the attraction force between two permanent magnets is used to add stiffness to the system, which counters the effect of the tip mass on the efficient operation frequency, and five set-ups incorporating piezoelectric bimorph cantilevers of the same type in different mechanical configurations are compared theoretically and experimentally to investigate the feasibility of this principle.
Journal Article
A Novel Analytical Model to Design Piezoelectric Patches Used to Repair Cracked Beams
TL;DR: In this paper, an analytical solution describing the deflection of a cracked beam repaired with piezoelectric patch is introduced, and the solution is derived using perturbation method.