Analysis of inhomogeneous stress distribution in the piezoelectric ceramics of unimorph cantilever for energy harvesting

Dae Yong Jeong; Hyun Cheol Song; Hyeong Chan Kim; Chong Yun Kang; Hyun Jai Kim; Seok Jin Yoon

doi:10.1109/ISAF.2007.4393403

Analysis of inhomogeneous stress distribution in the piezoelectric ceramics of unimorph cantilever for energy harvesting

Dae Yong Jeong, Hyun Cheol Song, Hyeong Chan Kim, Chong Yun Kang, Hyun Jai Kim, Seok Jin Yoon

KU-KIST Graduate School of Converging Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Energy harvesting from the vibration through the piezoelectric effect has been studied for powering the wireless sensor node. As piezoelectric unimorph transducer structure can transfer low vibration to large displacement, this structure was commonly deployed to harvest electric energy from vibrations. Piezoelectric unimorph structure was composed of small stiff piezoelectric ceramic on the large flexible substrate. As there is the large Young's modulus difference between the flexible substrate and stiff piezoelectric ceramic, flexible substrate could not homogeneously transfer the vibration to the stiff piezoelectric ceramic. As a result, most piezoelectric ceramics had been broken at the certain point. Even though the same stress was applied to unimorph cantilever at the end of the unimorph cantilever, there was the difference in output voltages depending on the potion of ceramics. The ratio of the lowest and highest voltage was around 2.4, which reveals the inhomogeneous stress distribution in ceramics.

Original language	English
Title of host publication	2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF
Pages	790-791
Number of pages	2
DOIs	https://doi.org/10.1109/ISAF.2007.4393403
Publication status	Published - 2007
Event	2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF - Nara-city, Japan Duration: 2007 May 27 → 2007 May 31

Publication series

Name	IEEE International Symposium on Applications of Ferroelectrics

Other

Other	2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF
Country/Territory	Japan
City	Nara-city
Period	07/5/27 → 07/5/31

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/ISAF.2007.4393403

Cite this

Jeong, D. Y., Song, H. C., Kim, H. C., Kang, C. Y., Kim, H. J., & Yoon, S. J. (2007). Analysis of inhomogeneous stress distribution in the piezoelectric ceramics of unimorph cantilever for energy harvesting. In 2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF (pp. 790-791). Article 4393403 (IEEE International Symposium on Applications of Ferroelectrics). https://doi.org/10.1109/ISAF.2007.4393403

Analysis of inhomogeneous stress distribution in the piezoelectric ceramics of unimorph cantilever for energy harvesting. / Jeong, Dae Yong; Song, Hyun Cheol; Kim, Hyeong Chan et al.
2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF. 2007. p. 790-791 4393403 (IEEE International Symposium on Applications of Ferroelectrics).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Jeong, DY, Song, HC, Kim, HC, Kang, CY, Kim, HJ & Yoon, SJ 2007, Analysis of inhomogeneous stress distribution in the piezoelectric ceramics of unimorph cantilever for energy harvesting. in 2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF., 4393403, IEEE International Symposium on Applications of Ferroelectrics, pp. 790-791, 2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF, Nara-city, Japan, 07/5/27. https://doi.org/10.1109/ISAF.2007.4393403

Jeong DY, Song HC, Kim HC, Kang CY, Kim HJ, Yoon SJ. Analysis of inhomogeneous stress distribution in the piezoelectric ceramics of unimorph cantilever for energy harvesting. In 2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF. 2007. p. 790-791. 4393403. (IEEE International Symposium on Applications of Ferroelectrics). doi: 10.1109/ISAF.2007.4393403

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abstract = "Energy harvesting from the vibration through the piezoelectric effect has been studied for powering the wireless sensor node. As piezoelectric unimorph transducer structure can transfer low vibration to large displacement, this structure was commonly deployed to harvest electric energy from vibrations. Piezoelectric unimorph structure was composed of small stiff piezoelectric ceramic on the large flexible substrate. As there is the large Young's modulus difference between the flexible substrate and stiff piezoelectric ceramic, flexible substrate could not homogeneously transfer the vibration to the stiff piezoelectric ceramic. As a result, most piezoelectric ceramics had been broken at the certain point. Even though the same stress was applied to unimorph cantilever at the end of the unimorph cantilever, there was the difference in output voltages depending on the potion of ceramics. The ratio of the lowest and highest voltage was around 2.4, which reveals the inhomogeneous stress distribution in ceramics.",

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AB - Energy harvesting from the vibration through the piezoelectric effect has been studied for powering the wireless sensor node. As piezoelectric unimorph transducer structure can transfer low vibration to large displacement, this structure was commonly deployed to harvest electric energy from vibrations. Piezoelectric unimorph structure was composed of small stiff piezoelectric ceramic on the large flexible substrate. As there is the large Young's modulus difference between the flexible substrate and stiff piezoelectric ceramic, flexible substrate could not homogeneously transfer the vibration to the stiff piezoelectric ceramic. As a result, most piezoelectric ceramics had been broken at the certain point. Even though the same stress was applied to unimorph cantilever at the end of the unimorph cantilever, there was the difference in output voltages depending on the potion of ceramics. The ratio of the lowest and highest voltage was around 2.4, which reveals the inhomogeneous stress distribution in ceramics.

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Analysis of inhomogeneous stress distribution in the piezoelectric ceramics of unimorph cantilever for energy harvesting

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