Enhancement of piezoelectric vibration energy harvesting with auxetic boosters

Eghbali, Pejman; Younesian, Davood; Farhangdoust, Saman

doi:10.1002/er.5010

Cited by 56 publications

(19 citation statements)

References 43 publications

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“…Exploring the auxetic feature in energy harvesting is a relatively new (since 2017) line of research [40][41][42][43] . PZT buzzers are available, universal and low-price elements which are widely used for different functions.…”

Section: Results Of This Study Can Open a New Path To Application Of mentioning

confidence: 99%

Study in circular auxetic structures for efficiency enhancement in piezoelectric vibration energy harvesting

Eghbali

Younesian

Moayedizadeh

et al. 2020

Sci Rep

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Piezoelectric (PZT) components are one of the most popular elements in vibration sensing and also energy harvesting. They are very well established, cost effective and available in different geometries however there are still several challenges in their application particularly in vibration energy harvesting. They are normally narrow-band elements and work in high-frequency range. Their efficiency and power extraction density are also generally low compared with different electromagnetic techniques. Auxetic structures are proposed here to enhance efficiency of the piezoelectric circular patches in vibration energy harvesting. These kinds of patches namely PZT buzzers are inexpensive (less than 10 USD) elements and easily available. Two novel circular auxetic substrates are proposed to improve power extraction capacity of the conventional piezoelectric buzzers. Negative Poison’s ratio of the proposed meta-structure helps in efficiency enhancement. The concept is introduced, analyzed and verified through the finite element modeling and experimental testing. The idea is proved to work by comparing the harvested electrical power in the auxetic design against the conventional plain system. A parametric study is then carried out and effects of important electrical and geometrical parameters as well as the material property on the power extraction efficiency are assessed to arrive at optimum parameters. It is shown that by employing the auxetic design, a remarkable improvement in the harvested power is achievable. It is shown that for the two proposed auxetic designs, at the resonance frequency, we could reach to 10.2 and 13.3 magnification factor with respect to the plain energy harvester. Another important feature is that the resonant frequency in these new designs is very much lower than the conventional resonators. Results of this study can open a new path to application of inexpensive PZT buzzers in large-scale vibration energy harvesting.

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Section: Results Of This Study Can Open a New Path To Application Of mentioning

confidence: 99%

Study in circular auxetic structures for efficiency enhancement in piezoelectric vibration energy harvesting

Eghbali

Younesian

Moayedizadeh

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

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“…Simulation results indicated that the ACBEH could produce up to 2.51 times the power generated by plain cantilever energy beam harvesters [149]. Auxetic structures are also being used in intermediate boosters to enhance the energy absorption capacity of conventional cantilever beam energy harvesters [150].…”

Section: Sensors and Actuatorsmentioning

confidence: 99%

Cellular Auxetic Structures for Mechanical Metamaterials: A Review

Kelkar

Kim

Cho

et al. 2020

Sensors

152

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Recent advances in lithography technology and the spread of 3D printers allow us a facile fabrication of special materials with complicated microstructures. The materials are called “designed materials” or “architectured materials” and provide new opportunities for material development. These materials, which owing to their rationally designed architectures exhibit unusual properties at the micro- and nano-scales, are being widely exploited in the development of modern materials with customized and improved performance. Meta-materials are found to possess superior and unusual properties as regards static modulus (axial stress divided by axial strain), density, energy absorption, smart functionality, and negative Poisson’s ratio (NPR). However, in spite of recent developments, it has only been feasible to fabricate a few such meta-materials and to implement them in practical applications. Against such a backdrop, a broad review of the wide range of cellular auxetic structures for mechanical metamaterials available at our disposal and their potential application areas is important. Classified according to their geometrical configuration, this paper provides a review of cellular auxetic structures. The structures are presented with a view to tap into their potential abilities and leverage multidimensional fabrication advances to facilitate their application in industry. In this review, there is a special emphasis on state-of-the-art applications of these structures in important domains such as sensors and actuators, the medical industry, and defense while touching upon ways to accelerate the material development process.

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“…Utilising the piezoelectric effect of materials, piezoelectric energy harvesting technology can capture the surrounding mechanical energy and convert it into electrical energy 3 . Compared to other energy harvesting methods, it offers advantages such as simple structure and energy density, which has resulted in it garnering attention in the research field in terms of realising road energy harvesting technologies 4 . Common piezoelectric materials used in energy harvesting are lead zirconate titanate (PZT) and polyethylene xylene sulphide (PVDF) 5 .…”

Section: Introductionmentioning

confidence: 99%

“…3 Compared to other energy harvesting methods, it offers advantages such as simple structure and energy density, which has resulted in it garnering attention in the research field in terms of realising road energy harvesting technologies. 4 Common piezoelectric materials used in energy harvesting are lead zirconate titanate (PZT) and polyethylene xylene sulphide (PVDF). 5 Typical transducer structures include Multilayer, Cymbal, Moonie, Stack, Bridge, and macrofiber composite.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on road piezoelectric energy harvesters' power generation performance under erosive environments

Wang

Liu

et al. 2022

Intl J of Energy Research

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Summary Piezoelectric energy harvesters (PEHs) located within the road surface structure are affected by vehicle loads as well as road environments such as rain and salt erosions. However, research on the latter aspect is lacking. In this study, a type of PZT‐5H piezoelectric transducer with excellent performance was fabricated and embedded in concrete and asphalt concrete test specimens, and subsequently, the variation laws of output voltage and output power of piezoelectric transducers were examined in an erosive environment. The test results indicate that, at first, the output voltage of piezoelectric transducers in concrete structures decreases rapidly to 20% and then remains stable with age; therefore, the final power generation must be considered as the design index of output power. Under the action of salt erosion, the output voltage of piezoelectric transducers decreases although a sudden increase in voltage was observed. Further, the trend of output voltage was found to change rapidly with the increase in sulphate concentration. The higher the chlorine‐salt concentration, the larger the decrease in output voltage. Finally, through comparisons of the piezoelectric transducers in different road surface structures, the open‐circuit voltage and maximum output power of the piezoelectric transducers in the asphalt concrete structure were found to be 100 and 10 000 times higher than those of the concrete structure, respectively. In conclusion, the results of this study confirm that the erosive environment affects the power‐generation performance of piezoelectric transducers to a certain extent, and thus, these results provide a reference for the future promotion and application of piezoelectric transducers on roads.

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Enhancement of piezoelectric vibration energy harvesting with auxetic boosters

Cited by 56 publications

References 43 publications

Study in circular auxetic structures for efficiency enhancement in piezoelectric vibration energy harvesting

Study in circular auxetic structures for efficiency enhancement in piezoelectric vibration energy harvesting

Cellular Auxetic Structures for Mechanical Metamaterials: A Review

Experimental study on road piezoelectric energy harvesters' power generation performance under erosive environments

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