Journal article 983 views 127 downloads
Experimental validation of an impact off-resonance energy harvester
The European Physical Journal Special Topics, Volume: 228, Issue: 7, Pages: 1635 - 1646
Swansea University Authors:
Michael Friswell, Sondipon Adhikari, Hamed Haddad Khodaparast
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DOI (Published version): 10.1140/epjst/e2019-800155-0
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...
Published in: | The European Physical Journal Special Topics |
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ISSN: | 1951-6355 1951-6401 |
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2019
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URI: | https://cronfa.swan.ac.uk/Record/cronfa51630 |
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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 Sondipon Adhikari Sondipon Adhikari true false f207b17edda9c4c3ea074cbb7555efc1 0000-0002-3721-4980 Hamed Haddad Khodaparast Hamed Haddad Khodaparast true false 2019-08-30 FGSEN 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 Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-08-30T11:08:41.3546469 2019-08-30T11:01:12.6858194 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised G. Martinez-Ayuso 1 M. I. Friswell 2 H. Haddad Khodaparast 3 S. Adhikari 4 Michael Friswell 5 Sondipon Adhikari 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 |
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Journal article |
container_title |
The European Physical Journal Special Topics |
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228 |
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7 |
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1635 |
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Swansea University |
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1951-6355 1951-6401 |
doi_str_mv |
10.1140/epjst/e2019-800155-0 |
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Faculty of Science and 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 |
2019-12-31T04:03:36Z |
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1763753293296697344 |
score |
11.021648 |