Micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements
Multi-step micromechanics-based models are developed to predict the overall effective elastic moduli of porous ceramic with randomly oriented carbon nanotube (CNT) reinforcements. The presence of porosity in the ceramic matrix that has been previously neglected in the literature is considered in pre...
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2015-09-01
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Online Access: | http://dx.doi.org/10.1063/1.4931453 |
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doaj-72fe6909d5db483fa2c9b5ae4fa33a112020-11-24T20:59:43ZengAIP Publishing LLCAIP Advances2158-32262015-09-0159097153097153-710.1063/1.4931453053509ADVMicromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcementsLeslie Poh0Christian Della1Shengjie Ying2Cindy Goh3Yun Li4Dou Yee Technologies Pte Ltd, 113 Defu Lane 10, Singapore 539227Dou Yee Technologies Pte Ltd, 113 Defu Lane 10, Singapore 539227Dou Yee Technologies Pte Ltd, 113 Defu Lane 10, Singapore 539227School of Engineering, University of Glasgow, Oakfield Avenue, Glasgow G12 8LT, U.K.School of Engineering, University of Glasgow, Oakfield Avenue, Glasgow G12 8LT, U.K.Multi-step micromechanics-based models are developed to predict the overall effective elastic moduli of porous ceramic with randomly oriented carbon nanotube (CNT) reinforcements. The presence of porosity in the ceramic matrix that has been previously neglected in the literature is considered in present analysis. The ceramic matrix with porosity is first homogenized using a classical Mori-Tanaka model. Then, the homogenized porous ceramic matrix with randomly oriented CNTs is analysed using two micromechanics models. The results predicted by the present models are compared with experimental and analytical results that have been reported in literature. The comparison shows that the discrepancies between the present analytical results and experimental data are about 10% for 4 wt% of CNTs and about 0.5% for 8 wt% CNTs, both substantially lower than the discrepancies currently reported in the literature.http://dx.doi.org/10.1063/1.4931453 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Leslie Poh Christian Della Shengjie Ying Cindy Goh Yun Li |
spellingShingle |
Leslie Poh Christian Della Shengjie Ying Cindy Goh Yun Li Micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements AIP Advances |
author_facet |
Leslie Poh Christian Della Shengjie Ying Cindy Goh Yun Li |
author_sort |
Leslie Poh |
title |
Micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements |
title_short |
Micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements |
title_full |
Micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements |
title_fullStr |
Micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements |
title_full_unstemmed |
Micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements |
title_sort |
micromechanics model for predicting effective elastic moduli of porous ceramic matrices with randomly oriented carbon nanotube reinforcements |
publisher |
AIP Publishing LLC |
series |
AIP Advances |
issn |
2158-3226 |
publishDate |
2015-09-01 |
description |
Multi-step micromechanics-based models are developed to predict the overall effective elastic moduli of porous ceramic with randomly oriented carbon nanotube (CNT) reinforcements. The presence of porosity in the ceramic matrix that has been previously neglected in the literature is considered in present analysis. The ceramic matrix with porosity is first homogenized using a classical Mori-Tanaka model. Then, the homogenized porous ceramic matrix with randomly oriented CNTs is analysed using two micromechanics models. The results predicted by the present models are compared with experimental and analytical results that have been reported in literature. The comparison shows that the discrepancies between the present analytical results and experimental data are about 10% for 4 wt% of CNTs and about 0.5% for 8 wt% CNTs, both substantially lower than the discrepancies currently reported in the literature. |
url |
http://dx.doi.org/10.1063/1.4931453 |
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