A Comparison Study of Fatigue Behavior of Hard and Soft Piezoelectric Single Crystal Macro-Fiber Composites for Vibration Energy Harvesting

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ID: 114217
2019
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Abstract
Designing a piezoelectric energy harvester (PEH) with high power density and high fatigue resistance is essential for the successful replacement of the currently using batteries in structural health monitoring (SHM) systems. Among the various designs, the PEH comprising of a cantilever structure as a passive layer and piezoelectric single crystal-based fiber composites (SFC) as an active layer showed excellent performance due to its high electromechanical properties and dynamic flexibilities that are suitable for low frequency vibrations. In the present study, an effort was made to investigate the reliable performance of hard and soft SFC based PEHs. The base acceleration of both PEHs is held at 7 m/s2 and the frequency of excitation is tuned to their resonant frequency (fr) and then the output power (Prms) is monitored for 107 fatigue cycles. The effect of fatigue cycles on the output voltage, vibration displacement, dielectric, and ferroelectric properties of PEHs was analyzed. It was noticed that fatigue-induced performance degradation is more prominent in soft SFC-based PEH (SS-PEH) than in hard SFC-based PEH (HS-PEH). The HS-PEH showed a slight degradation in the output power due to a shift in fr, however, no degradation in the maximum power was noticed, in fact, dielectric and ferroelectric properties were improved even after 107 vibration cycles. In this context, the present study provides a pathway to consider the fatigue life of piezoelectric material for the designing of PEH to be used at resonant conditions for long-term operation.
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peddigari2019sensorsa Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mahesh Peddigari;Ga-Yeon Kim;Chan Hee Park;Yuho Min;Jong-Woo Kim;Cheol-Woo Ahn;Jong-Jin Choi;Byung-Dong Hahn;Joon-Hwan Choi;Dong-Soo Park;Jae-Keun Hong;Jong-Taek Yeom;Kwi-Il Park;Dae-Yong Jeong;Woon-Ha Yoon;Jungho Ryu;Geon-Tae Hwang;Peddigari, Mahesh;Kim, Ga-Yeon;Park, Chan Hee;Min, Yuho;Kim, Jong-Woo;Ahn, Cheol-Woo;Choi, Jong-Jin;Hahn, Byung-Dong;Choi, Joon-Hwan;Park, Dong-Soo;Hong, Jae-Keun;Yeom, Jong-Taek;Park, Kwi-Il;Jeong, Dae-Yong;Yoon, Woon-Ha;Ryu, Jungho;Hwang, Geon-Tae;
Journal sensors
Year 2019
DOI
10.3390/s19092196
URL
https://dx.doi.org/10.3390/s19092196
Keywords
energy harvesting long-term stability piezoelectric single crystal National Center for Biotechnology Information NCBI NLM MEDLINE pubmed abstract nih national institutes of health national library of medicine pmid:31085985 pmc6539409 doi:10.3390/s19092196 mahesh peddigari ga-yeon kim geon-tae hwang

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