Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 May 13;19(9):2196.
doi: 10.3390/s19092196.

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

Mahesh Peddigari  1 , Ga-Yeon Kim  2 , Chan Hee Park  3 , Yuho Min  4 , Jong-Woo Kim  5 , Cheol-Woo Ahn  6 , Jong-Jin Choi  7 , Byung-Dong Hahn  8 , Joon-Hwan Choi  9 , Dong-Soo Park  10 , Jae-Keun Hong  11 , Jong-Taek Yeom  12 , Kwi-Il Park  13 , Dae-Yong Jeong  14 , Woon-Ha Yoon  15 , Jungho Ryu  16 , Geon-Tae Hwang  17
Affiliations

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

Mahesh Peddigari et al. Sensors (Basel). .

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.

Keywords: energy harvesting; long-term stability; piezoelectric single crystal.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Photographs of (a) flexible single crystal-based fiber composites (SFC) and (b) experimental setup used for investigating the fatigue behavior of hard and soft SFC-based PEHs. The inset shows an image of soft and hard SFCs after attaching to the Ti-alloy elastic layer.
Figure 2
Figure 2
(a) and (c), (b) and (d) are the RMS voltage and RMS power curves for hard and soft SFC based piezoelectric energy harvesters (PEHs) measured as a function of load resistances at different excitation frequencies.
Figure 3
Figure 3
Variation in the Prms response of (a) hard SFC-based PEH (HS-PEH) and (b) soft SFC-based PEH (SS-PEH) as a function of vibration cycles measured at 7 m/s2.
Figure 4
Figure 4
Comparison of power frequency response curves for (a) HS-PEH and (b) SS-PEHs measured at base acceleration of 7 m/s2.
Figure 5
Figure 5
The comparison graphs of output voltage, vibration displacement, capacitance, and polarization changes for (a–d) HS-PEH and (e–h) SS-PEHs measured before and after fatigue test at 7 m/s2.
See this image and copyright information in PMC

References

    1. Alper E., Inman D.J. Piezoelectric Energy Harvesting. Wiley; Chichester, UK: 2011.
    1. Romero E., Warrington R.O., Neuman M.R. Energy scavenging sources for biomedical sensors. Physiol. Meas. 2009;30:R35. doi: 10.1088/0967-3334/30/9/R01. - DOI - PubMed
    1. Steven R.A., Henry A.S. A review of power harvesting using piezoelectric materials (2003–2006) Smart Mater. Struct. 2007;16:R1.
    1. Priya S., Song H.-C., Zhou Y., Varghese R., Chopra A., Kim S.-G., Kanno I., Wu L., Ha Dong S., Ryu J., et al. A Review on Piezoelectric Energy Harvesting: Materials, Methods, and Circuits. Energy Harvest. Syst. 2017;4:3–39. doi: 10.1515/ehs-2016-0028. - DOI
    1. Michael W.S., Matthew B., Ephrahim G. Designing maximum power output into piezoelectric energy harvesters. Smart Mater. Struct. 2012;21:085008.

LinkOut - more resources