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Experimental validation of an impact off-resonance energy harvester / G. Martinez-Ayuso; M. I. Friswell; H. Haddad Khodaparast; S. Adhikari; Michael Friswell; Sondipon Adhikari; Hamed Haddad Khodaparast

The European Physical Journal Special Topics, Volume: 228, Issue: 7, Pages: 1635 - 1646

Swansea University Authors: Michael, Friswell, Sondipon, Adhikari, Hamed, Haddad Khodaparast

Abstract

Most piezoelectric energy harvesting research has focused on developing on-resonance harvesters that work at low frequencies, even though higher frequencies can generate more power. In addition, conventional resonant harvesters have low efficiency when the excitation frequency is away from resonance...

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Published in: The European Physical Journal Special Topics
ISSN: 1951-6355 1951-6401
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51630
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spelling 2019-08-30T11:08:41.3546469 v2 51630 2019-08-30 Experimental validation of an impact off-resonance energy harvester 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false 4ea84d67c4e414f5ccbd7593a40f04d3 0000-0003-4181-3457 Sondipon Adhikari Sondipon Adhikari true false f207b17edda9c4c3ea074cbb7555efc1 0000-0002-3721-4980 Hamed Haddad Khodaparast Hamed Haddad Khodaparast true false 2019-08-30 EEN Most piezoelectric energy harvesting research has focused on developing on-resonance harvesters that work at low frequencies, even though higher frequencies can generate more power. In addition, conventional resonant harvesters have low efficiency when the excitation frequency is away from resonance. Using mechanical impacts has the potential to improve the overall harvested energy since high frequencies are excited during impacts. Also, the presence of impacts reduces the influence of the base excitation frequency and the requirement to exactly match the resonance frequency. To take advantage of the higher frequency response, an impact energy harvester is designed and validated experimentally. The harvester consists of a cantilever beam with a piezoelectric patch attached to its base which impacts with a stiff object. The harvester is modelled using finite element analysis and a Hertzian contact law. The model is tested and validated in the laboratory using an in-house manufactured demonstrator. Good agreement with the experimental data is obtained, setting the basis for future optimisation of the harvester geometry and piezoelectric properties. Journal Article The European Physical Journal Special Topics 228 7 1635 1646 1951-6355 1951-6401 31 12 2019 2019-12-31 10.1140/epjst/e2019-800155-0 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2019-08-30T11:08:41.3546469 2019-08-30T11:01:12.6858194 College of Engineering Engineering G. Martinez-Ayuso 1 M. I. Friswell 2 H. Haddad Khodaparast 3 S. Adhikari 4 Michael Friswell 5 Sondipon Adhikari 0000-0003-4181-3457 6 Hamed Haddad Khodaparast 0000-0002-3721-4980 7 0051630-30082019110755.pdf Martinez-Ayuso2019.pdf 2019-08-30T11:07:55.9500000 Output 968284 application/pdf Version of Record true 2019-08-30T00:00:00.0000000 false eng
title Experimental validation of an impact off-resonance energy harvester
spellingShingle Experimental validation of an impact off-resonance energy harvester
Michael, Friswell
Sondipon, Adhikari
Hamed, Haddad Khodaparast
title_short Experimental validation of an impact off-resonance energy harvester
title_full Experimental validation of an impact off-resonance energy harvester
title_fullStr Experimental validation of an impact off-resonance energy harvester
title_full_unstemmed Experimental validation of an impact off-resonance energy harvester
title_sort Experimental validation of an impact off-resonance energy harvester
author_id_str_mv 5894777b8f9c6e64bde3568d68078d40
4ea84d67c4e414f5ccbd7593a40f04d3
f207b17edda9c4c3ea074cbb7555efc1
author_id_fullname_str_mv 5894777b8f9c6e64bde3568d68078d40_***_Michael, Friswell
4ea84d67c4e414f5ccbd7593a40f04d3_***_Sondipon, Adhikari
f207b17edda9c4c3ea074cbb7555efc1_***_Hamed, Haddad Khodaparast
author Michael, Friswell
Sondipon, Adhikari
Hamed, Haddad Khodaparast
author2 G. Martinez-Ayuso
M. I. Friswell
H. Haddad Khodaparast
S. Adhikari
Michael Friswell
Sondipon Adhikari
Hamed Haddad Khodaparast
format Journal article
container_title The European Physical Journal Special Topics
container_volume 228
container_issue 7
container_start_page 1635
publishDate 2019
institution Swansea University
issn 1951-6355
1951-6401
doi_str_mv 10.1140/epjst/e2019-800155-0
college_str College of Engineering
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hierarchy_parent_title College of Engineering
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description Most piezoelectric energy harvesting research has focused on developing on-resonance harvesters that work at low frequencies, even though higher frequencies can generate more power. In addition, conventional resonant harvesters have low efficiency when the excitation frequency is away from resonance. Using mechanical impacts has the potential to improve the overall harvested energy since high frequencies are excited during impacts. Also, the presence of impacts reduces the influence of the base excitation frequency and the requirement to exactly match the resonance frequency. To take advantage of the higher frequency response, an impact energy harvester is designed and validated experimentally. The harvester consists of a cantilever beam with a piezoelectric patch attached to its base which impacts with a stiff object. The harvester is modelled using finite element analysis and a Hertzian contact law. The model is tested and validated in the laboratory using an in-house manufactured demonstrator. Good agreement with the experimental data is obtained, setting the basis for future optimisation of the harvester geometry and piezoelectric properties.
published_date 2019-12-31T04:14:12Z
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