Cover Image

Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester

In recent years, harnessing electrical energy from mechanical vibration by using a piezoelectric energy harvester (PEH) has attracted much attention from researchers. This sustainable energy harvester is useful for wireless sensor network, where a replacement or replenishment of an energy source suc...

Full description

Saved in:
Bibliographic Details
Main Authors: Long, Su Xian, Khoo, Shin Yee, Ong, Zhi Chao, Soong, Ming Foong
Format: Article
Published: IOP Publishing 2021
Subjects:
TA Engineering (General). Civil engineering (General)
TP Chemical technology
Online Access:http://eprints.um.edu.my/26410/
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.um.eprints.26410
record_format eprints
spelling my.um.eprints.264102022-02-28T01:03:14Z http://eprints.um.edu.my/26410/ Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester Long, Su Xian Khoo, Shin Yee Ong, Zhi Chao Soong, Ming Foong TA Engineering (General). Civil engineering (General) TP Chemical technology In recent years, harnessing electrical energy from mechanical vibration by using a piezoelectric energy harvester (PEH) has attracted much attention from researchers. This sustainable energy harvester is useful for wireless sensor network, where a replacement or replenishment of an energy source such as a battery is impractical. From previous studies, the amount of energy generated by the PEH is very limited even in a high force environment. To solve this issue, mechanical amplifier structure such as Cymbal structure is implemented to amplify the tensile loading force towards the PEH. In terms of the material strength perspective, this performance can be further enhanced by using a compressive-type mechanical amplifier structure, as the compressive yield strength of piezoelectric material is much higher than its tensile yield strength. In this study, a compressive structural design which is named as Hull structure is proposed. Several techniques included analytical model analysis, finite element analysis (FEA), and experimental testing have been used to evaluate its performance. It shows a force amplification factor of 9.72 at 6 degrees through the analytical model. From the FEA result, the proposed Hull structure shows great potential in enhancing the power output of 11.34 mW, which is 3.08 times larger than the benchmarking Tensile Cymbal structure. It also shows 5.28 times greater output voltage than the benchmark case in the experiment. Besides, it has a great advantage of providing a wider area for excitation loading force which increases the PEH's load capacity and suitable for the vehicular excitation application. IOP Publishing 2021-12 Article PeerReviewed Long, Su Xian and Khoo, Shin Yee and Ong, Zhi Chao and Soong, Ming Foong (2021) Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester. Smart Materials and Structures, 30 (12). ISSN 0964-1726, DOI https://doi.org/10.1088/1361-665X/ac2e1c <https://doi.org/10.1088/1361-665X/ac2e1c>. 10.1088/1361-665X/ac2e1c
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TA Engineering (General). Civil engineering (General)
TP Chemical technology
spellingShingle TA Engineering (General). Civil engineering (General)
TP Chemical technology
Long, Su Xian
Khoo, Shin Yee
Ong, Zhi Chao
Soong, Ming Foong
Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester
description In recent years, harnessing electrical energy from mechanical vibration by using a piezoelectric energy harvester (PEH) has attracted much attention from researchers. This sustainable energy harvester is useful for wireless sensor network, where a replacement or replenishment of an energy source such as a battery is impractical. From previous studies, the amount of energy generated by the PEH is very limited even in a high force environment. To solve this issue, mechanical amplifier structure such as Cymbal structure is implemented to amplify the tensile loading force towards the PEH. In terms of the material strength perspective, this performance can be further enhanced by using a compressive-type mechanical amplifier structure, as the compressive yield strength of piezoelectric material is much higher than its tensile yield strength. In this study, a compressive structural design which is named as Hull structure is proposed. Several techniques included analytical model analysis, finite element analysis (FEA), and experimental testing have been used to evaluate its performance. It shows a force amplification factor of 9.72 at 6 degrees through the analytical model. From the FEA result, the proposed Hull structure shows great potential in enhancing the power output of 11.34 mW, which is 3.08 times larger than the benchmarking Tensile Cymbal structure. It also shows 5.28 times greater output voltage than the benchmark case in the experiment. Besides, it has a great advantage of providing a wider area for excitation loading force which increases the PEH's load capacity and suitable for the vehicular excitation application.
format Article
author Long, Su Xian
Khoo, Shin Yee
Ong, Zhi Chao
Soong, Ming Foong
author_facet Long, Su Xian
Khoo, Shin Yee
Ong, Zhi Chao
Soong, Ming Foong
author_sort Long, Su Xian
title Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester
title_short Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester
title_full Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester
title_fullStr Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester
title_full_unstemmed Design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester
title_sort design, modeling and testing of a new compressive amplifier structure for piezoelectric harvester
publisher IOP Publishing
publishDate 2021
url http://eprints.um.edu.my/26410/
_version_ 1735409409084882944
score 13.211869

Similar Items