naa a22 4500 510823076 CHVBK 20180411083543.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s12541-013-0291-8 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0291-8 Increasing the output from piezoelectric energy harvester using width-split method with verification [Elektronische Daten] [Chow Sang, Jedol Dayou, Willey Liew] This paper proposes a new scheme for piezoelectric energy harvesting maximization. The proposed enhancement relies on a new topology of splitting a specified dimension piezo composite bender into beams with smaller width and, therefore, higher quality factor (or Q factor). The increase of Q factor allows a much more effective energy conversion process. It is shown that the proposed method, based on single splitting, increases the harvested power by a factor of up to √6, and up to √7.62 for two even-splitting compared to with no splitting. The wideband operation is accomplished by using different resonating benders in such a way that individual benders are each tuned to a different resonance frequency. Taking the configuration of single even-splitting as an example, the power output of the prototype was 39 μW at 27.2 Hz with 8 Hz bandwidth under 2 mm peak-to-peak input displacement and 3 Hz variation in resonant frequency. This corresponds to more than 2 times of power output with no splitting as well as about 23% increase in bandwidth. Such power output is sufficient to power up electronics devices such as a "2 AA dry cells-powered” digital clock with the wider range operating frequency. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Piezoelectric energy harvester nationallicence Ambient vibration nationallicence Wideband operation nationallicence Quality factor nationallicence Structural damping nationallicence Energy conversion nationallicence Sang Chow Energy, Vibration and Sound Research Group (e-VIBS), School of Science and Technology, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia aut Dayou Jedol Energy, Vibration and Sound Research Group (e-VIBS), School of Science and Technology, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia aut Liew Willey School of Engineering and Information Technology, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia aut International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/12(2013-12-01), 2149-2155 2234-7593 14:12<2149 2013 14 12541 https://doi.org/10.1007/s12541-013-0291-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0291-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sang Chow Energy, Vibration and Sound Research Group (e-VIBS), School of Science and Technology, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia aut NATIONALLICENCE 700 1- Dayou Jedol Energy, Vibration and Sound Research Group (e-VIBS), School of Science and Technology, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia aut NATIONALLICENCE 700 1- Liew Willey School of Engineering and Information Technology, Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/12(2013-12-01), 2149-2155 2234-7593 14:12<2149 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer