Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites

By using an aligned multi-walled carbon nanotube (MWCNT) reinforced epoxy composite, an electrothermal bimorph actuator was fabricated and its load and deformation capacities were investigated. The composite has a negative coefficient of thermal expansion (CTE) as well as large Young’s modulus. To e...

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Autores principales:	Keiichi SHIRASU, Akihiro NAKAMURA, Go YAMAMOTO, Toshio OGASAWARA, Yoshinobu SHIMAMURA, Yoku INOUE, Toshiyuki HASHIDA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	carbon nanotube composite young's modulus coefficient of thermal expansion actuator Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/1ea96fb194294fb09a60cc1fa47caccc
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spelling	oai:doaj.org-article:1ea96fb194294fb09a60cc1fa47caccc2021-11-26T06:53:45ZPreparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites2187-974510.1299/mej.15-00607https://doaj.org/article/1ea96fb194294fb09a60cc1fa47caccc2016-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/4/3_15-00607/_pdf/-char/enhttps://doaj.org/toc/2187-9745By using an aligned multi-walled carbon nanotube (MWCNT) reinforced epoxy composite, an electrothermal bimorph actuator was fabricated and its load and deformation capacities were investigated. The composite has a negative coefficient of thermal expansion (CTE) as well as large Young’s modulus. To evaluate the actuator property, a composite/aluminum laminate was prepared and a U-shaped actuator was formed by cutting off the middle part of the composite/aluminum laminate. The Young’s modulus of the composites increased linearly with increasing MWCNT volume fraction, and that of the composite containing 27 vol.% MWCNTs reached 56.8 ± 3.9 GPa. We also demonstrated that the actuator showed a large bending displacement and force output under low voltage stimulation. The bending displacement and force output of the actuator with the free length of 16 mm reached 7.6 mm and 9.0 mN under a DC voltage of 5.2 V, respectively. Furthermore, the actuator fabricated in this study showed higher values of work output per unit volume compared to the actuators reported in previous studies within the frequency between 0.05 Hz and 0.5 Hz. The enhanced performance was attributable mainly to the high Young’s modulus of both composite and aluminum layers and the huge mismatch of the coefficient of thermal expansion in the composite/aluminum laminate.Keiichi SHIRASUAkihiro NAKAMURAGo YAMAMOTOToshio OGASAWARAYoshinobu SHIMAMURAYoku INOUEToshiyuki HASHIDAThe Japan Society of Mechanical Engineersarticlecarbon nanotubecompositeyoung's moduluscoefficient of thermal expansionactuatorMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 4, Pp 15-00607-15-00607 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbon nanotube composite young's modulus coefficient of thermal expansion actuator Mechanical engineering and machinery TJ1-1570
spellingShingle	carbon nanotube composite young's modulus coefficient of thermal expansion actuator Mechanical engineering and machinery TJ1-1570 Keiichi SHIRASU Akihiro NAKAMURA Go YAMAMOTO Toshio OGASAWARA Yoshinobu SHIMAMURA Yoku INOUE Toshiyuki HASHIDA Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites
description	By using an aligned multi-walled carbon nanotube (MWCNT) reinforced epoxy composite, an electrothermal bimorph actuator was fabricated and its load and deformation capacities were investigated. The composite has a negative coefficient of thermal expansion (CTE) as well as large Young’s modulus. To evaluate the actuator property, a composite/aluminum laminate was prepared and a U-shaped actuator was formed by cutting off the middle part of the composite/aluminum laminate. The Young’s modulus of the composites increased linearly with increasing MWCNT volume fraction, and that of the composite containing 27 vol.% MWCNTs reached 56.8 ± 3.9 GPa. We also demonstrated that the actuator showed a large bending displacement and force output under low voltage stimulation. The bending displacement and force output of the actuator with the free length of 16 mm reached 7.6 mm and 9.0 mN under a DC voltage of 5.2 V, respectively. Furthermore, the actuator fabricated in this study showed higher values of work output per unit volume compared to the actuators reported in previous studies within the frequency between 0.05 Hz and 0.5 Hz. The enhanced performance was attributable mainly to the high Young’s modulus of both composite and aluminum layers and the huge mismatch of the coefficient of thermal expansion in the composite/aluminum laminate.
format	article
author	Keiichi SHIRASU Akihiro NAKAMURA Go YAMAMOTO Toshio OGASAWARA Yoshinobu SHIMAMURA Yoku INOUE Toshiyuki HASHIDA
author_facet	Keiichi SHIRASU Akihiro NAKAMURA Go YAMAMOTO Toshio OGASAWARA Yoshinobu SHIMAMURA Yoku INOUE Toshiyuki HASHIDA
author_sort	Keiichi SHIRASU
title	Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites
title_short	Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites
title_full	Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites
title_fullStr	Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites
title_full_unstemmed	Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites
title_sort	preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/1ea96fb194294fb09a60cc1fa47caccc
work_keys_str_mv	AT keiichishirasu preparationandperformanceevaluationofelectrothermalactuatorsusingalignedcarbonnanotubereinforcedepoxycomposites AT akihironakamura preparationandperformanceevaluationofelectrothermalactuatorsusingalignedcarbonnanotubereinforcedepoxycomposites AT goyamamoto preparationandperformanceevaluationofelectrothermalactuatorsusingalignedcarbonnanotubereinforcedepoxycomposites AT toshioogasawara preparationandperformanceevaluationofelectrothermalactuatorsusingalignedcarbonnanotubereinforcedepoxycomposites AT yoshinobushimamura preparationandperformanceevaluationofelectrothermalactuatorsusingalignedcarbonnanotubereinforcedepoxycomposites AT yokuinoue preparationandperformanceevaluationofelectrothermalactuatorsusingalignedcarbonnanotubereinforcedepoxycomposites AT toshiyukihashida preparationandperformanceevaluationofelectrothermalactuatorsusingalignedcarbonnanotubereinforcedepoxycomposites
_version_	1718409704648998912

Preparation and performance evaluation of electrothermal actuators using aligned carbon nanotube reinforced epoxy composites

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