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

被引：44

作者：

Peddigari, Mahesh ^{[1
]}

Kim, Ga-Yeon ^{[1
]}

Park, Chan Hee ^{[1
]}

Min, Yuho ^{[1
]}

Kim, Jong-Woo ^{[1
]}

Ahn, Cheol-Woo ^{[1
]}

Choi, Jong-Jin ^{[1
]}

Hahn, Byung-Dong ^{[1
]}

Choi, Joon-Hwan ^{[1
]}

Park, Dong-Soo ^{[1
]}

Hong, Jae-Keun ^{[1
]}

Yeom, Jong-Taek ^{[1
]}

Park, Kwi-Il ^{[2
]}

Jeong, Dae-Yong ^{[3
]}

Yoon, Woon-Ha ^{[1
]}

Ryu, Jungho ^{[4
]}

Hwang, Geon-Tae ^{[1
]}

机构：

[1] KIMS, Chang Won 51508, South Korea

[2] Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea

[3] Inha Univ, Dept Mat Sci & Engn, Incheon 22212, South Korea

[4] Yeungnam Univ, Sch Mat Sci & Engn, Gyongsan 38541, South Korea

来源：

SENSORS | 2019年 / 19卷 / 09期

基金：

新加坡国家研究基金会;

关键词：

energy harvesting; piezoelectric single crystal; long-term stability; LAYER THICKNESS; PERFORMANCE; CERAMICS;

D O I：

10.3390/s19092196

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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/s(2) and the frequency of excitation is tuned to their resonant frequency (f(r)) and then the output power (P-rms) is monitored for 10(7) 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 f(r), however, no degradation in the maximum power was noticed, in fact, dielectric and ferroelectric properties were improved even after 10(7) 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.

引用

页数：11

共 45 条

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