Experimental investigation of fatigue in a cantilever energy harvesting beam

Over the last decade, cantilever energy harvesters gained immense popularity owing to the simplicity of the design and piezoelectric energy harvesting (PEH) using the cantilever design has undergone considerable evolution. The major drawback of a vibrating cantilever beam is its vulnerability to fat...

Full description

Saved in:
Bibliographic Details
Main Authors: Avvari, Panduranga Vittal, Yang, Yaowen, Liu, Peiwen, Soh, Chee Kiong
Other Authors: Meyendorf, Norbert G.
Format: Conference or Workshop Item
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/88618
http://hdl.handle.net/10220/46954
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-88618
record_format dspace
spelling sg-ntu-dr.10356-886182020-03-07T11:43:28Z Experimental investigation of fatigue in a cantilever energy harvesting beam Avvari, Panduranga Vittal Yang, Yaowen Liu, Peiwen Soh, Chee Kiong Meyendorf, Norbert G. School of Civil and Environmental Engineering Proceedings of SPIE - Smart Materials and Nondestructive Evaluation for Energy Systems 2015 Fatigue DRNTU::Engineering::Civil engineering Energy Harvesting Over the last decade, cantilever energy harvesters gained immense popularity owing to the simplicity of the design and piezoelectric energy harvesting (PEH) using the cantilever design has undergone considerable evolution. The major drawback of a vibrating cantilever beam is its vulnerability to fatigue over a period of time. This article brings forth an experimental investigation into the phenomenon of fatigue of a PEH cantilever beam. As there has been very little literature reported in this area, an effort has been made to scrutinize the damage due to fatigue in a linear vibrating cantilever PEH beam consisting of an aluminum substrate with a piezoelectric macro-fiber composite (MFC) patch attached near the root of the beam and a tip mass attached to the beam. The beam was subjected to transverse vibrations and the behavior of the open circuit voltage was recorded with passing time. Moreover, electro-mechanical admittance readings were obtained periodically using the same MFC patch as a Structural health monitoring (SHM) sensor to assess the health of the PEH beam. The results show that with passing time the PEH beam underwent fatigue in both the substrate and MFC, which is observed in a complimentary trend in the voltage and admittance readings. The claim is further supported using the variation of root mean square deviation (RMSD) of the real part of admittance (conductance) readings. Thus, this study concludes that the fatigue issue should be addressed in the design of PEH for long term vibration energy harvesting. Published version 2018-12-13T08:41:28Z 2019-12-06T17:07:23Z 2018-12-13T08:41:28Z 2019-12-06T17:07:23Z 2015 Conference Paper Avvari, P. V., Yang, Y., Liu, P., & Soh, C. K. (2015). Experimental investigation of fatigue in a cantilever energy harvesting beam. Proceedings of SPIE - Smart Materials and Nondestructive Evaluation for Energy Systems 2015, 9439, 94390U-. doi:10.1117/12.2083841 https://hdl.handle.net/10356/88618 http://hdl.handle.net/10220/46954 10.1117/12.2083841 en © 2015 Society of Photo-optical Instrumentation Engineers (SPIE). This paper was published in Proceedings of SPIE - Smart Materials and Nondestructive Evaluation for Energy Systems 2015 and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers (SPIE). The published version is available at: [http://dx.doi.org/10.1117/12.2083841]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 11 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Fatigue
DRNTU::Engineering::Civil engineering
Energy Harvesting
spellingShingle Fatigue
DRNTU::Engineering::Civil engineering
Energy Harvesting
Avvari, Panduranga Vittal
Yang, Yaowen
Liu, Peiwen
Soh, Chee Kiong
Experimental investigation of fatigue in a cantilever energy harvesting beam
description Over the last decade, cantilever energy harvesters gained immense popularity owing to the simplicity of the design and piezoelectric energy harvesting (PEH) using the cantilever design has undergone considerable evolution. The major drawback of a vibrating cantilever beam is its vulnerability to fatigue over a period of time. This article brings forth an experimental investigation into the phenomenon of fatigue of a PEH cantilever beam. As there has been very little literature reported in this area, an effort has been made to scrutinize the damage due to fatigue in a linear vibrating cantilever PEH beam consisting of an aluminum substrate with a piezoelectric macro-fiber composite (MFC) patch attached near the root of the beam and a tip mass attached to the beam. The beam was subjected to transverse vibrations and the behavior of the open circuit voltage was recorded with passing time. Moreover, electro-mechanical admittance readings were obtained periodically using the same MFC patch as a Structural health monitoring (SHM) sensor to assess the health of the PEH beam. The results show that with passing time the PEH beam underwent fatigue in both the substrate and MFC, which is observed in a complimentary trend in the voltage and admittance readings. The claim is further supported using the variation of root mean square deviation (RMSD) of the real part of admittance (conductance) readings. Thus, this study concludes that the fatigue issue should be addressed in the design of PEH for long term vibration energy harvesting.
author2 Meyendorf, Norbert G.
author_facet Meyendorf, Norbert G.
Avvari, Panduranga Vittal
Yang, Yaowen
Liu, Peiwen
Soh, Chee Kiong
format Conference or Workshop Item
author Avvari, Panduranga Vittal
Yang, Yaowen
Liu, Peiwen
Soh, Chee Kiong
author_sort Avvari, Panduranga Vittal
title Experimental investigation of fatigue in a cantilever energy harvesting beam
title_short Experimental investigation of fatigue in a cantilever energy harvesting beam
title_full Experimental investigation of fatigue in a cantilever energy harvesting beam
title_fullStr Experimental investigation of fatigue in a cantilever energy harvesting beam
title_full_unstemmed Experimental investigation of fatigue in a cantilever energy harvesting beam
title_sort experimental investigation of fatigue in a cantilever energy harvesting beam
publishDate 2018
url https://hdl.handle.net/10356/88618
http://hdl.handle.net/10220/46954
_version_ 1681047946284498944