Experimental Investigation on Piezoelectric Actuated Beams (original) (raw)

MATHEMATICAL MODELLING OF PIEZOELECTRIC HARVESTING FROM BRIDGE VIBRATION UNDER MOVING LOAD

This paper shows a possibility of harvesting electrical energy from mechanical vibration. In this way, a piezoelectric material is used to harvest energy from bridge vibration under a moving load. The response of bridge under moving load is studied first, and second the energy harvesting with a piezoelectric element, and third the combination of the two phenomena. The bridge is modelled as a simple beam with length l, supported at both the ends, and traversed by a force P moving with a constant velocity c. Its behaviour is described by the Euler-Bernoulli differential equation. Modal superposition is used to solve this equation, and a transformation is made from displacement coordinate to modal coordinate. A new differential equation is obtained and a resolution in the frequency domain by Fourier transform and Laplace transform is used to study the deflection of the bridge. A piezoelectric model in one dimension is also considered. The model is composed of a seismic mass that compresses all area of piezoelectric material. This means that the model is studied in longitudinal mode or mode33. The piezoelectric element is connected to a power harvesting circuit modelled as a single resistor R. A transformation in piezoelectric constitutive equation gives a differential equation of the electromechanical system. Laplace transform is used to solve the equation in frequency domain. The displacement and the generated voltage for the piezoelectric harvester are obtained. A mathematical study was done by combining the two models. The idea is to put a piezoelectric element directly under the bridge with glue. In this case, the deflection of the bridge is considered as a stress applied to the piezoelectric element. Numerical application is chosen for bridge and piezoelectric parameters. Results are obtained by varying the position of the harvester, the speed of the moving load and the length of the bridge. A maximum power between 99.9 µW and 438.20 µW is obtained with the bridge length between 25 m and 50 m.

Data of piezoelectric vibration energy harvesting of a bridge undergoing vibration testing and train passage

Data in brief, 2018

The data presented in this article is in relation to the research article "Vibration energy harvesting based monitoring of an operational bridge undergoing forced vibration and train passage" Cahill et al. (2018) [1]. The article provides data on the full-scale bridge testing using piezoelectric vibration energy harvesters on Pershagen Bridge, Sweden. The bridge is actively excited via a swept sinusoidal input. During the testing, the bridge remains operational and train passages continue. The test recordings include the voltage responses obtained from the vibration energy harvesters during these tests and train passages. The original dataset is made available to encourage the use of energy harvesting for Structural Health Monitoring.

Green Energy Harvesting Using Piezoelectric Materials from Bridge Vibrations

ICGEA SINGAPORE, 2018

Piezoelectric energy harvesting from bridge vibrations has attracted many researchers not because it provides a clean and autonomous solution to power portable electronic devices, in addition, it helps in making a smart city. This paper focuses on energy harvesting from low-frequency bridge vibrations which includes vibrations measurements from a city flyover and laboratory experiment using traditional rectifier circuit at low frequency and small amplitude vibrations for storage. The typical practical issues have been addressed associated with PEH from bridge vibrations and electrical circuitry.

Analytical, FEA, and Experimental Comparisons of Piezoelectric Energy Harvesting Using Engine Vibrations

Smart Materials Research, 2014

Piezoelectric elements can be used as sensors and actuators in flexible structures. In this paper, using the most basic concepts of piezoelectric micropower generators, all useful mathematical equations for getting analytical output are discussed and derived for different piezo positions on cantilever beam and then 3D finite element modeling and simulation of generalized piezoelectric laminated beam problem with proper specifications and properties are done in ANSYS12.0. Experimental analysis is also done on the very practical problem to harvest energy (to get electric energy) by applying some deflection (mechanical energy) on piezo-bonded aluminum beam, that is, to harvest energy (at microlevel at least) by using vibrations of 4-stroke car diesel engine with mounting of piezo cantilever beam. Here piezoelectric beam is used to measure the charge generated from the engine vibrations. The vibration amplitudes are measured with a Laser Vibrometer with considerations of maximum number ...

A POTENTIAL STUDY OF PIEZOELECTRIC ENERGY HARVESTING IN CAR VIBRATION

Micro Generating System Using Piezoelectric for Low Energy System is a system that provides the user with free flowing energy that can be used without any consequences to the environment. This system enables users to generate low energy for their uses by transforming the mechanical energy produced by the car engine vibration into electrical energy. This project is generally about designing and developing the circuit and its charging system for piezoelectricity. The electrical energy harvested is then charged the capacitor after passing through full wave rectifier. The harvesting system is made up of piezoelectric cantilever that will convert vibration to electrical energy and the charging system is made up of capacitor and known as capacitor banks. The system is then installed at a car engine to generate energy from the car vibration when the engine is switched on. The energy is then being directly used or stored in the capacitor bank for future uses.

Modelling, Fabrication and Characterization of a Piezoelectric Vibration Energy Harvester

2014

In the immediate surroundings of our daily life, we can find a lot of places where the energy in the form of vibration is being wasted. Therefore, we have enormous opportunities to utilize the same. Piezoelectric character of matter enables us to convert this mechanical vibration energy into electrical energy which can be stored and used to power other device, instead of being wasted. This work is done to realize both actuator and sensor in a cantilever beam based on piezoelectricity. The sensor part is called vibration energy harvester. The numerical analyses were performed for the cantilever beam using the commercial package ANSYS and MATLAB. The cantilever beam is realized by taking a plate and fixing its one end between two massive plates. Two PZT patches were glued to the beam on its two faces. Experiments were performed using data acquisition system (DAQ) and LABVIEW software for actuating and sensing the vibration of the cantilever beam.

Investigation on the factors influencing the performance of piezoelectric energy harvester

Road Materials and Pavement Design, 2017

In this study, we devised a promising method to harvest the clean power from vehicle vibrations. We tested the electrical response of stacked piezoelectric units at different temperatures and loadings by using indoor laboratory tests. It is also discovered that ambient temperature has a great influence on the piezoelectric power generation. The generated electric energy of piezoelectric unit increased with increase in the loading and their relationship follow the cubic polynomial. It is demonstrated that there is a linear correlation between the open-circuit voltage and the amount of charge generated of the piezoelectric unit. The output energy increases with an increase in the frequency and the load.

IJERT-Modelling, Fabrication and Characterization of a Piezoelectric Vibration Energy Harvester

International Journal of Engineering Research and Technology (IJERT), 2014

https://www.ijert.org/modelling-fabrication-and-characterization-of-a-piezoelectric-vibration-energy-harvester https://www.ijert.org/research/modelling-fabrication-and-characterization-of-a-piezoelectric-vibration-energy-harvester-IJERTV3IS10117.pdf In the immediate surroundings of our daily life, we can find a lot of places where the energy in the form of vibration is being wasted. Therefore, we have enormous opportunities to utilize the same. Piezoelectric character of matter enables us to convert this mechanical vibration energy into electrical energy which can be stored and used to power other device, instead of being wasted. This work is done to realize both actuator and sensor in a cantilever beam based on piezoelectricity. The sensor part is called vibration energy harvester. The numerical analyses were performed for the cantilever beam using the commercial package ANSYS and MATLAB. The cantilever beam is realized by taking a plate and fixing its one end between two massive plates. Two PZT patches were glued to the beam on its two faces. Experiments were performed using data acquisition system (DAQ) and LABVIEW software for actuating and sensing the vibration of the cantilever beam.

A review on vibration-based piezoelectric energy harvesting from the aspect of compliant mechanisms

Sensors and Actuators A: Physical, 2021

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Analysis of Energy Harvesters for Highway Bridges

Journal of Intelligent Material …, 2011

This article investigates the possibility of piezoelectric energy harvesters as energy scavenging devices in highway bridges. The structural vibration due to the motion of a load (vehicle) on the bridge is considered as the source of energy generation for the harvester. The energy generated in this way can be useful for wireless sensor networks for structural health monitoring of bridges by reducing or even eliminating the need for battery replacement/recharging. A highway bridge model with a moving point load is investigated and a linear single-degree-of-freedom model is used for the piezoelectric energy harvester. Two types of harvesters, namely, the harvesting circuit with and without an inductor, have been considered and the energy generated for a single vehicle has been estimated. These results may be used, together with traffic statistics, to obtain the variation of average power and thus, for a given application, help to design the energy management system.