NDLI: Piezoelectric Energy Harvesting under High Pre-Stressed Cyclic Vibrations

Content Provider	Springer Nature Link
Author	Kim, Hyeoung Woo Priya, Shashank Uchi, Kenji Newnham, Robert E.
Copyright Year	2005
Abstract	Cymbal transducers have been found as a promising structure for piezoelectric energy harvesting under high force (∼ 100 N) at cyclic conditions (∼ 100–200 Hz). The thicker steel cap enhances the endurance of the ceramic to sustain higher ac loads along with stress amplification. This study reports the performance of the cymbal transducer under ac force of 70 N with a pre-stress load of 67 N at 100 Hz frequency. At this frequency and force level, 52 mW power was generated from a cymbal measured across a 400 kΩ resistor. The ceramic diameter was fixed at 29 mm and various thicknesses were experimented to optimize the performance. The results showed that the PZT ceramic of 1 mm thickness provided the highest power output with 0.4 mm endcap. In order to accommodate such high dynamic pressure the transducer and cap materials were modified and it was found that the higher piezoelectric voltage constant ceramic provided the higher output power. Electrical output power as a function of applied ac stress magnitude was also computed using FEM analysis and the results were found to be functionally coherent with experiment. This study clearly demonstrated the feasibility of using piezoelectric transducers for harvesting energy from high magnitude vibration sources such as automobile.
Starting Page	27
Ending Page	34
Page Count	8
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	15
Issue Number	1
e-ISSN	15738663
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	piezoelectric energy harvesting cymbal transducer piezoelectric generator Crystallography Characterization and Evaluation Materials Optical and Electronic Materials Ceramics, Glass, Composites, Natural Methods Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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