Electromechanical Degradation of Piezoelectric Patches

Elahi, Hassan; Eugeni, Marco; Gaudenzi, Paolo

doi:10.1007/978-981-10-6895-9_3

Cited by 17 publications

(9 citation statements)

References 21 publications

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“…Studies have considered the degradation of piezoelectric devices of various configurations, such as flat discs and long cylinders [21] as well as rectangular patches [22]. However, a more relevant configuration to inverted flags is piezoelectric energy-harvesting beams.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Durability Assessment of an Energy-Harvesting Piezoelectric Inverted Flag

2021

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This paper presents results from a practical assessment of the endurance of an inverted flag energy harvester, tested over multiple days in a wind tunnel to provide first insights into flapping fatigue and failure. The inverted flag is a composite bimorph, composed of PVDF (polyvinylidene difluoride) strips combined with a passive metallic core to provide sufficient stiffness. The flag, derived from an earlier, more extensive study, flaps with a typical amplitude of ~120 degrees and a frequency of ~2 Hz, generating a constant power of ~0.09 mW in a wind velocity of 6 m/s. The flag was observed to complete ~5×105 cycles before failure, corresponding to ~70 h of operation. The energy generated over this lifespan is estimated to be sufficient to power a standard low-power temperature sensor for several months at a sampling rate of one sample/minute, which would be adequate for applications such as wildfire detection, environmental monitoring, and agriculture management. This study indicates that structural fatigue may present a practical obstacle to the wider development of this technology, particularly in the context of their usual justification as a ‘deploy and forget’ alternative to battery power. Further work is required to improve the fatigue resistance of the flag material.

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Section: Introductionmentioning

confidence: 99%

Mechanical Durability Assessment of an Energy-Harvesting Piezoelectric Inverted Flag

2021

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“…The importance of piezoelectric based system modeling is widely emphasized in the literature, and many commercially available tools have been developed for the beam, plate and shell-type of harvesters [5,6]. They have a wide range of applications in smart structures [7,8] and micro/Nanoelectromechanical systems [9,10]. A lot of research has been done on the coupling of piezoelectric material for the application of energy harvesting and many designs have been studied [11,12].…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental investigation of piezoelectric energy harvester based on flag-flutter

Eugeni

Elahi

Fune

et al. 2020

Aerospace Science and Technology

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“…One of the most useful mechanism among them is to harvest energy using piezoelectric material [5]. Many researchers have analysed there thermal properties and thermal response to voltage generation [6][7][8]. The disadvantage of using such materials is that they can harvest energy for micro or nanoelectronics [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Design and performance analysis of hybrid solar powered geyser in Islamabad, Pakistan

et al. 2020

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As a consequence of energy crisis and pollution around the globe, many countries are shifting towards the renewable energy resources which are environmental friendly too i. e., solar energy. The aim of this research work is to design a solar powered geyser that can be used for domestic as well as for industrial purposes. The analytical model is constructed to understand the behavior of water temperature with respect to time and to the energy that can be generated from solar panel with and without glass glazing. The extensive experimentation was carried out at self designed test rig in Islamabad, Pakistan for six months i. e., August 2017-January 2018. The response of the power output to the time in specific month and its efficiency is predicted and optimized. Moreover, electrical backup was integrated in closed loop feedback circuit to achieve maximum efficiency even in dark cloudy weather or a sunny day. Moreover, it is calculated that how much external power is required by the system in order to perform the task at different time intervals of the day. Analytical results were in good agreement with experimental results, with error of 9%.

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Electromechanical Degradation of Piezoelectric Patches

Cited by 17 publications

References 21 publications

Mechanical Durability Assessment of an Energy-Harvesting Piezoelectric Inverted Flag

Mechanical Durability Assessment of an Energy-Harvesting Piezoelectric Inverted Flag

Numerical and experimental investigation of piezoelectric energy harvester based on flag-flutter

Design and performance analysis of hybrid solar powered geyser in Islamabad, Pakistan

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