scholarly journals Sensitivity analysis for piezoelectric energy harvester and bluff body design toward underwater pipeline monitoring

2017 ◽  
Vol 1 (1) ◽  
pp. 10-20 ◽  
Author(s):  
Fassahat Ullah Qureshi Qureshi ◽  
Ali Muhtaroğlu ◽  
Kagan Tuncay
Keyword(s):  
Sensitivity Analysis ◽  
Bluff Body ◽  
Energy Harvester ◽  
Piezoelectric Energy ◽  
Underwater Pipeline ◽  
Body Design ◽  
Pipeline Monitoring

Modeling and Experimental Validations of a Piezoelectric Energy Harvester Under Combined Galloping and Base Excitations

2014 ◽  
Author(s):  
Amin Bibo ◽  
Abdessattar Abdelkefi ◽  
Mohammed F. Daqaq
Keyword(s):  
Bluff Body ◽  
Energy Harvester ◽  
Constitutive Relations ◽  
Excitation Frequency ◽  
Primary Resonance ◽  
Beam Theory ◽  
Excitation Amplitude ◽  
The Body ◽  
Base Excitation ◽  
Piezoelectric Energy

This paper develops an experimentally validated model of a piezoelectric energy harvester under combined aeroelastic-galloping and base excitations. To that end, an energy harvester consisting of a thin piezoelectric cantilever beam subjected to vibratory base excitation is considered. To permit galloping excitation, a bluff body is rigidly attached at the free end such that a net aerodynamic lift is generated as the incoming airflow separates on both sides of the body giving rise to limit cycle oscillations when the flow velocity exceeds a critical value. A nonlinear electromechanical distributed-parameter model of the harvester under the combined excitation is derived using the energy approach and by adopting the nonlinear Euler-Bernoulli beam theory, linear constitutive relations for the piezoelectric transduction, and the quasi-steady assumption for the aerodynamic loading. The partial differential equations of the system are discretized and a reduced-order-model is obtained. The mathematical model is validated by conducting a series of experiments with different loading conditions represented by wind speed, base excitation amplitude, and excitation frequency around the primary resonance.

A direct sensitivity analysis of a piezoelectric energy harvester

2017 ◽  
Author(s):  
Marius Stoia-Djeska ◽  
Florin Frunzulica ◽  
Carmen-Anca Safta
Keyword(s):  
Sensitivity Analysis ◽  
Energy Harvester ◽  
Piezoelectric Energy ◽  
Direct Sensitivity

Synchronization of Cantilevers Arranged in Line of a Piezoelectric Energy Harvester

2015 ◽  
Author(s):  
Max Spornraft ◽  
Norbert Schwesinger ◽  
Shlomo Berger
Keyword(s):  
Energy Harvesting ◽  
Bluff Body ◽  
Energy Harvester ◽  
Phase Synchronization ◽  
Vibrational Excitation ◽  
Line Energy ◽  
Mechanical Coupling ◽  
Piezoelectric Energy ◽  
Piezoelectric Cantilever ◽  
The Right

Synchronization opens further ways to improve cantilever-based energy harvesting arrays in view of power output, easier rectification and scaling. Objective of this study is to investigate the synchronization behavior of a cantilever-array based energy harvesting systems. Thereby, synchronization is achieved by mechanical coupling through a so-called “overhang”. Nakajima et al. [1] and Wang et al. [2] already verified this principle for the synchronization of two and three cantilevers, but at constant vibrational excitation. Regarding energy harvesting, no application of this method is presently available. In this paper, we investigate the synchronization behavior of a piezoelectric cantilever-line energy harvester in airflow. The design of the energy harvester bases upon a piezoelectric cantilever-line and a common bluff body, arranged upstream. To investigate synchronization of the cantilevers, three commonly available piezoelectric bimorphs were employed to study synchronization. Mounted on a common bluff body, the effect of overhang material and position was studied. Therefore, different constellations were examined by impulse excitation as well as vortex-induced vibration in a wind channel. In several measurements, we found arrangements and parameters allowing for an in-phase synchronization of neighborly cantilevers of the line. The knowledge gained allows for a direct electrical connection of piezoelectric cantilevers with just one single rectifier unit. Cantilevers coupled with overhangs arranged in the right order oscillate with the same frequency and phase, i.e. without any charge cancellations. This knowledge opens ways to develop basic design rules for the synchronization of cantilevers.

An enhanced hybrid piezoelectric–electromagnetic energy harvester using dual-mass system for vortex-induced vibrations

2021 ◽  
pp. 107754632110418
Author(s):  
Asan GA Muthalif ◽  
Muhammad Hafizh ◽  
Jamil Renno ◽  
Mohammad R Paurobally
Keyword(s):  
Bluff Body ◽  
Energy Harvester ◽  
Fiber Composite ◽  
Body Movement ◽  
Secondary Beam ◽  
Element Analysis ◽  
Mass System ◽  
Hybrid Energy ◽  
Piezoelectric Energy ◽  
Electromechanical Transduction

This article proposes a novel hybrid piezoelectric–electromagnetic vortex-induced vibration energy harvester from flow of water inside of a pipe. The piezoelectric energy harvester was modeled with a macro-fiber composite P2-type while the electromechanical transduction was modeled by an elastic magnet coupled to the bluff body movement. A dual-mass configuration was proposed to increase the energy harvesting efficiency. Theoretical models and the submerged natural frequencies of the hybrid energy harvesters were outlined. Computational fluid dynamics and finite element analysis with ANSYS were used to visualize the response in synchronization and output the voltage extracted from the harvesting mechanisms. The addition of a secondary system improves the amount of harvestable energy and outputs more energy than just a single system. This demonstrates the superiority of a dual-mass hybrid system. A tuned secondary beam was used for L-body configurations to make use of inline oscillations, and the secondary piezoelectric output improved for all configurations. Secondary beam tuning also improved the performance of the harvester by any amount between 21% and 52% when compared against a single-mass hybrid energy harvester. A comparative study showed that the L-vertical and vertical bluff-body-tuned was the best performing hybrid-PE energy harvester based on total voltage output.

Experimental hydrodynamic investigations on the effectiveness of inverted flag-based piezoelectric energy harvester in the wake of bluff body

2022 ◽  
Vol 245 ◽  
pp. 110454
Author(s):  
M. Umair ◽  
U. Latif ◽  
E. Uddin ◽  
A. Abdelkefi
Keyword(s):  
Bluff Body ◽  
Energy Harvester ◽  
Piezoelectric Energy

Modeling and Characterization of a Piezoelectric Energy Harvester Under Combined Aerodynamic and Base Excitations

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Amin Bibo ◽  
Abdessattar Abdelkefi ◽  
Mohammed F. Daqaq
Keyword(s):  
Bluff Body ◽  
Energy Harvester ◽  
Constitutive Relations ◽  
Equations Of Motion ◽  
Primary Resonance ◽  
Beam Theory ◽  
Combined Loading ◽  
Response Behavior ◽  
Piezoelectric Energy ◽  
Piezoelectric Cantilever

This paper develops and validates an aero-electromechanical model which captures the nonlinear response behavior of a piezoelectric cantilever-type energy harvester under combined galloping and base excitations. The harvester consists of a thin piezoelectric cantilever beam clamped at one end and rigidly attached to a bluff body at the other end. In addition to the vibratory base excitations, the beam is also subjected to aerodynamic forces resulting from the separation of the incoming airflow on both sides of the bluff body which gives rise to limit-cycle oscillations when the airflow velocity exceeds a critical value. A nonlinear electromechanical distributed-parameter model of the harvester under the combined excitations is derived using the energy approach and by adopting the nonlinear Euler–Bernoulli beam theory, linear constitutive relations for the piezoelectric transduction, and the quasi-steady assumption for the aerodynamic loading. The resulting partial differential equations of motion are discretized and a reduced-order model is obtained. The mathematical model is validated by conducting a series of experiments at different wind speeds and base excitation amplitudes for excitation frequencies around the primary resonance of the harvester. Results from the model and experiment are presented to characterize the response behavior under the combined loading.

Near-Optimal Design of Scalable Energy Harvester for Underwater Pipeline Monitoring Applications With Consideration of Impact to Pipeline Performance

2017 ◽  
Vol 17 (7) ◽  
pp. 1981-1991 ◽  
Author(s):  
Fassahat Ullah Qureshi ◽  
Ali Muhtaroglu ◽  
Kagan Tuncay
Keyword(s):  
Optimal Design ◽  
Energy Harvester ◽  
Underwater Pipeline ◽  
Monitoring Applications ◽  
Pipeline Monitoring

Galloping Piezoelectric Energy Harvester with Bio-inspired Square Bluff Body

2015 ◽  
Author(s):  
Felix Ewere ◽  
Gang Wang ◽  
Kader Frendi
Keyword(s):  
Bluff Body ◽  
Energy Harvester ◽  
Piezoelectric Energy

Fabrication and Sensitivity Analysis of Guided Beam Piezoelectric Energy Harvester

2018 ◽  
Vol 65 (11) ◽  
pp. 5123-5129 ◽  
Author(s):  
Shanky Saxena ◽  
Ritu Sharma ◽  
B. D. Pant
Keyword(s):  
Sensitivity Analysis ◽  
Energy Harvester ◽  
Piezoelectric Energy
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