naa a22 4500 510822525 CHVBK 20180411083540.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s12541-013-0220-x doi (NATIONALLICENCE)springer-10.1007/s12541-013-0220-x A study on the acoustic energy harvesting with Helmholtz resonator and piezoelectric cantilevers [Elektronische Daten] [Seungjun Noh, Hoyoung Lee, Bumkyoo Choi] Some kinds of thermofluid instruments are using Helmholtz resonators for absorbing noises radiated from them. Since the resonance frequency of a Helmholtz resonator depends on the ratio of the resonant volume to the neck size, operating frequency range can be easily tuned and thus the Helmholtz resonator is well-suited for noise control in a wide range of frequency. Besides the noise control application, Helmholtz resonators have been recently applied to acoustic energy harvesting. To date, most of studies on energy harvesting using Helmholtz resonators are employing piezoelectric materials located in the resonant volume and enhancing harvesting efficiency by tuning the resonance frequency and the structure of the added piezoelectric materials. In this study, a piezoelectric (PVDF composite) cantilever was integrated within a Helmholtz resonator. Then, energy harvesting efficiency was maximized by matching and tuning mechanical resonance of the piezoelectric cantilever and acoustic resonance of the Helmholtz resonator. Theoretical analysis including finite element simulation was also performed to confirm our experimental results. To maximize the harvest power, the electrical impedance matching was considered. This study can be applied to acoustic energy harvesting as well as acoustic noise control. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Helmholtz resonator nationallicence Acoustic nationallicence Energy harvesting nationallicence Piezoelectric nationallicence Impedance matching nationallicence Noh Seungjun Department of Mechanical Engineering, Sogang University, Sinsu-Dong, Mapo-Gu, 121-742, Seoul, Republic of Korea aut Lee Hoyoung Department of Mechanical Engineering, Sogang University, Sinsu-Dong, Mapo-Gu, 121-742, Seoul, Republic of Korea aut Choi Bumkyoo Department of Mechanical Engineering, Sogang University, Sinsu-Dong, Mapo-Gu, 121-742, Seoul, Republic of Korea aut International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/9(2013-09-01), 1629-1635 2234-7593 14:9<1629 2013 14 12541 https://doi.org/10.1007/s12541-013-0220-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0220-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Noh Seungjun Department of Mechanical Engineering, Sogang University, Sinsu-Dong, Mapo-Gu, 121-742, Seoul, Republic of Korea aut NATIONALLICENCE 700 1- Lee Hoyoung Department of Mechanical Engineering, Sogang University, Sinsu-Dong, Mapo-Gu, 121-742, Seoul, Republic of Korea aut NATIONALLICENCE 700 1- Choi Bumkyoo Department of Mechanical Engineering, Sogang University, Sinsu-Dong, Mapo-Gu, 121-742, Seoul, Republic of Korea aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/9(2013-09-01), 1629-1635 2234-7593 14:9<1629 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer