Simply-supported multi-layered beams for energy harvesting

Patel, Rikesh; Tanaka, Yoshikazu; McWilliam, Stewart; Mutsuda, Hidemi; Popov, Atanas A.

doi:10.1177/1045389x16657418

Cited by 7 publications

(4 citation statements)

References 16 publications

(28 reference statements)

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“…Additionally, there are reported experimental results where a cavity was added to the cantilever beam to increase strain and generated voltage by approximately 75% compared with those of the option without the cavity [30]. Additional experimental results indicated that the use of multilayered piezoelectric sensors generated more voltage than that of a single-layered structure [31], and showed the use of a cantilever with a coupled pendulum to gather energy from displacements in two degrees of freedom (DOF) [32]. In automotive applications, vibration frequencies are generally very low (<100 Hz), and for a vehicle chassis and vertical dynamics of the vehicle structure, they are approximately <15 Hz [33].…”

Section: Related Workmentioning

confidence: 97%

Design and Implementation of an IoT-Oriented Strain Smart Sensor with Exploratory Capabilities on Energy Harvesting and Magnetorheological Elastomer Transducers

et al. 2020

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This work designed and implemented a new low-cost, Internet of Things-oriented, wireless smart sensor prototype to measure mechanical strain. The research effort explores the use of smart materials as transducers, e.g., a magnetorheological elastomer as an electrical-resistance sensor, and a cantilever beam with piezoelectric sensors to harvest energy from vibrations. The study includes subsequent and validated results with a magnetorheological elastomer transducer that contained multiwall carbon nanotubes with iron particles, generated voltage tests from an energy-harvesting system that functions with an array of piezoelectric sensors embedded in a rubber-based cantilever beam, wireless communication to send data from the sensor’s central processing unit towards a website that displays and stores the handled data, and an integrated manufactured prototype. Experiments showed that electrical-resistivity variation versus measured strain, and the voltage-generation capability from vibrations have the potential to be employed in smart sensors that could be integrated into commercial solutions to measure strain in automotive and aircraft systems, and civil structures. The reported experiments included cloud-computing capabilities towards a potential Internet of Things application of the smart sensor in the context of monitoring automotive-chassis vibrations and airfoil damage for further analysis and diagnostics, and in general structural-health-monitoring applications.

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Section: Related Workmentioning

confidence: 97%

Design and Implementation of an IoT-Oriented Strain Smart Sensor with Exploratory Capabilities on Energy Harvesting and Magnetorheological Elastomer Transducers

et al. 2020

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“…Moreover, this method facilitates the straightforward adjustment of the system's resonance frequency. Based on Su and Patel's research [49,50], it is evident that simply supported beams exhibit more uniform strain distribution and a smaller working space compared to cantilever beams, albeit with a higher resonance frequency. Khazaee et al [51] designed a four-point bending PEH under pin-pin boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of an extended buckled beam piezoelectric energy harvester subjected to different axial preload

Sun,

2024

Smart Mater. Struct.

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In this paper, a piezoelectric energy harvester composed of a buckled beam and an extended beam with a tip mass is proposed. This study develops a mathematical model and a prototype of the energy harvester. The performance of the energy harvester is influenced by the axial load applied at the end of the buckled beam. Under an axial force below the critical load, the energy harvester exhibits a pre-buckling state with a hardening nonlinear characteristic. Conversely, when the axial force exceeds the critical load, a post-buckling state with a softening nonlinear characteristic is observed. Simulation results are validated through experiments, and the relationship between axial displacement and axial force is obtained through experimental data. Moreover, increasing the tip mass enhances the output voltage under the same acceleration. The energy harvester demonstrates superior performance in terms of output power and strain distribution compared to a cantilever counterpart.

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“…Lu et al [30] proposed a pin-based hybrid energy harvester combining a single-span buckled beam, a two-span buckled beam, and a two-span beam for broadband harvesting. Simply supported beams [31][32][33][34][35][36][37] are also commonly used and exhibit good strain distribution.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of an Extended Simply Supported Beam Piezoelectric Energy Harvester

Tseng

2023

Sensors

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The harvesting efficiency of a cantilevered piezoelectric energy harvester is limited by its uneven strain distribution. Moreover, a cantilevered harvester requires a large workspace due to the large displacement of its free end. To address these issues, a novel piezoelectric energy harvester based on an extended simply supported beam is proposed. The proposed design features a simply supported piezoelectric main beam with an extended beam attached to its roller end and a tip mass to reduce the resonant frequency. The theoretical model of the proposed piezoelectric energy harvester is developed based on the Euler–Bernoulli beam theory. The model has been experimentally validated through the fabrication of a prototype. The extended beam and tip mass are adjusted to see their influence on the performance of the harvester. The resonant frequency can be maintained by shortening the extended beam and increasing the tip mass simultaneously. A shorter extend beam leads to a more even strain distribution in the piezoelectric layer, resulting in an enhanced output voltage. Moreover, the simulation results show that a torsional spring is installed on the roller joint which greatly influences the voltage output. The strain distribution becomes more even when proper compressive preload is applied on the main beam. Experiments have shown that the proposed design enhances the output power by 86% and reduces tip displacement by 63.2% compared to a traditional cantilevered harvester.

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Simply-supported multi-layered beams for energy harvesting

Cited by 7 publications

References 16 publications

Design and Implementation of an IoT-Oriented Strain Smart Sensor with Exploratory Capabilities on Energy Harvesting and Magnetorheological Elastomer Transducers

Design and Implementation of an IoT-Oriented Strain Smart Sensor with Exploratory Capabilities on Energy Harvesting and Magnetorheological Elastomer Transducers

Design and analysis of an extended buckled beam piezoelectric energy harvester subjected to different axial preload

Design and Analysis of an Extended Simply Supported Beam Piezoelectric Energy Harvester

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