Design and testing of an efficient and compact piezoelectric energy harvester

Korla, Srikanth; León, Rene A.; Tansel, İbrahim N.; Yenilmez, A.; Yapıcı, Ahmet; Demetgül, Mustafa

doi:10.1016/j.mejo.2010.10.018

Cited by 29 publications

(13 citation statements)

References 17 publications

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“…The SHM techniques can be used to capture these crack transitions in the form of variation in reflected/transmitted waves, which can be further utilized for identification of vicinity of defect and its quantification [ 27 ]. Contrary to the labour intensive, time-consuming, and expensive inspections by other techniques, GWUT can be helpful to inspect wider structural area in less time, cost and cheap equipment setup [ 28 , 29 ].…”

Section: Ultrasonic Guided Waves and Shmmentioning

confidence: 99%

Structural Health Monitoring (SHM) and Determination of Surface Defects in Large Metallic Structures using Ultrasonic Guided Waves

Abbas

Shafiee

2018

Sensors

119

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Ultrasonic guided wave (UGW) is one of the most commonly used technologies for non-destructive evaluation (NDE) and structural health monitoring (SHM) of structural components. Because of its excellent long-range diagnostic capability, this method is effective in detecting cracks, material loss, and fatigue-based defects in isotropic and anisotropic structures. The shape and orientation of structural defects are critical parameters during the investigation of crack propagation, assessment of damage severity, and prediction of remaining useful life (RUL) of structures. These parameters become even more important in cases where the crack intensity is associated with the safety of men, environment, and material, such as ship’s hull, aero-structures, rail tracks and subsea pipelines. This paper reviews the research literature on UGWs and their application in defect diagnosis and health monitoring of metallic structures. It has been observed that no significant research work has been convened to identify the shape and orientation of defects in plate-like structures. We also propose an experimental research work assisted by numerical simulations to investigate the response of UGWs upon interaction with cracks in different shapes and orientations. A framework for an empirical model may be considered to determine these structural flaws.

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Section: Ultrasonic Guided Waves and Shmmentioning

confidence: 99%

Structural Health Monitoring (SHM) and Determination of Surface Defects in Large Metallic Structures using Ultrasonic Guided Waves

Abbas

Shafiee

2018

Sensors

119

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“…Energy scavenging source: The available scavenged energy can be modeled as a property of the system implementation as shown in the AADL Spec 2. Further, to calculate the available energy, established models such as ANNOVA for ambulation [8] can be specified and executed in the analysis.…”

Section: Specification Phasementioning

confidence: 99%

Your mobility can be injurious to your health: Analyzing pervasive health monitoring systems under dynamic context changes

Banerjee

Gupta

2012

2012 IEEE International Conference on Pervasive Computing and Communications

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Abstract-The advent of smart phones has enabled health care anywhere and anytime. With pervasive health care, a person can perform necessary day to day tasks while his health is recorded, controlled, and processed continuously using on body sensors and actuators to capture abnormalities, trends, and causes. In such a scenario, seamless operation of the pervasive health management system (PHMS), given dynamic changes in the context induced by mobility of the user is of utmost importance. Such context changes dynamically affect many aspects such as the processing requirements of the health management application, the available energy sources, the interaction between a medical device with the human body. For social acceptability of PHMSes, they have to be tested and verified for their safe, energy sustainable (long term) and reliable operation under such dynamically changing environment. This paper proposes a novel technique to analyze PHMSes under mobility induced dynamic changes in the context and constant interaction of the medical device with the human body. Results show that human mobility induced context changes can cause unsafe conditions such as drug overdose.

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“…Furthermore,f or harvesting ample energy over aw ide band of frequencies, many researchers have introduced nonlinear generators whereby nonlinear stiffness effects are used to increase the operating range. [16][17][18][19][20][21][22][23] Then onlinear energy harvester can take the form of abistable oscillator with cubic nonlinear stiffness typically introduced by using magnets. Ferrarie tal.…”

Section: Introductionmentioning

confidence: 99%

Finite‐Element Analysis of a Varying‐Width Bistable Piezoelectric Energy Harvester

Kumar

Chauhan

et al. 2015

Energy Tech

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In this study, a finite‐element analysis of a varying‐width piezoelectric energy harvester (PEH) has been presented. A varying‐width piezoelectric energy harvester (cantilever type) has variation in the width at definite intervals along its length. To harvest the energy over the wide frequency range of environmental vibrations, nonlinearity is introduced in the stiffness by mean of two neodymium magnets. The width of the proposed varying‐width cantilever PEH is calculated using block pulse functions (BPFs). The objective of applying BPFs is to proximate a triangular PEH (with fixed base) into a proposed varying‐width PEH with three rectangular sections along length. The use of BPFs enable the use of rectangular patches of lead zirconate titanate (PZT‐5A). This leads to a reduction in cost as machining PZT at other than straight cuts results in an extensive increase in the production costs. The varying‐width piezoelectric cantilever beam is subjected to harmonic base excitations by applying a vertical acceleration of 0.2 g (g=9.81 m s−2). Numerical study indicates that the bistable varying‐width PEH generates at least two times the average power than that generated by a bistable uniform‐width PEH for the same volume of piezoelectric material and for the same linear natural frequency. Furthermore, the bistable varying‐width PEH is optimized using a genetic algorithm technique to maximize the mean power density.

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Design and testing of an efficient and compact piezoelectric energy harvester

Cited by 29 publications

References 17 publications

Structural Health Monitoring (SHM) and Determination of Surface Defects in Large Metallic Structures using Ultrasonic Guided Waves

Structural Health Monitoring (SHM) and Determination of Surface Defects in Large Metallic Structures using Ultrasonic Guided Waves

Your mobility can be injurious to your health: Analyzing pervasive health monitoring systems under dynamic context changes

Finite‐Element Analysis of a Varying‐Width Bistable Piezoelectric Energy Harvester

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