Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure

As one of the most renewable and sustainable resources on Earth, bamboo with its high flexibility has been used in the fabrication of a wide variety of composite structures due to its properties. A bamboo-based winding composite (BWC) is an innovative bamboo product which has revolutionized pipe str...

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Autores principales: Wei, Xin, Zhou, Haiying, Chen, Fuming, Wang, Ge
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631585/
https://www.ncbi.nlm.nih.gov/pubmed/31234566
http://dx.doi.org/10.3390/ma12122007
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author Wei, Xin
Zhou, Haiying
Chen, Fuming
Wang, Ge
author_facet Wei, Xin
Zhou, Haiying
Chen, Fuming
Wang, Ge
author_sort Wei, Xin
collection PubMed
description As one of the most renewable and sustainable resources on Earth, bamboo with its high flexibility has been used in the fabrication of a wide variety of composite structures due to its properties. A bamboo-based winding composite (BWC) is an innovative bamboo product which has revolutionized pipe structures and their applications throughout China as well as improving their impact on the environment. However, as a natural functionally graded composite, the flexibility mechanism of bamboo has not yet been fully understood. Here, the bending stiffness method based on the cantilever beam principle was used to investigate the gradient and directional bending flexibility of bamboo (Phyllostachys edulis) slivers under different loading Types during elastic stages. Results showed that the graded distribution and gradient variation of cell size of the fibers embedded in the parenchyma cells along the thickness of the bamboo culm was mainly responsible for the exhibited gradient bending flexibility of bamboo slivers, whereas the shape and size difference of the vascular bundles from inner to outer layers played a critical role in directional bending flexibility. A validated rule of mixture was used to fit the bending stiffness under different loading Types as a function of fiber volume fraction. This work provides insights to the bionic preparation and optimization of high-performance BWC pipes.
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spelling pubmed-66315852019-08-19 Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure Wei, Xin Zhou, Haiying Chen, Fuming Wang, Ge Materials (Basel) Article As one of the most renewable and sustainable resources on Earth, bamboo with its high flexibility has been used in the fabrication of a wide variety of composite structures due to its properties. A bamboo-based winding composite (BWC) is an innovative bamboo product which has revolutionized pipe structures and their applications throughout China as well as improving their impact on the environment. However, as a natural functionally graded composite, the flexibility mechanism of bamboo has not yet been fully understood. Here, the bending stiffness method based on the cantilever beam principle was used to investigate the gradient and directional bending flexibility of bamboo (Phyllostachys edulis) slivers under different loading Types during elastic stages. Results showed that the graded distribution and gradient variation of cell size of the fibers embedded in the parenchyma cells along the thickness of the bamboo culm was mainly responsible for the exhibited gradient bending flexibility of bamboo slivers, whereas the shape and size difference of the vascular bundles from inner to outer layers played a critical role in directional bending flexibility. A validated rule of mixture was used to fit the bending stiffness under different loading Types as a function of fiber volume fraction. This work provides insights to the bionic preparation and optimization of high-performance BWC pipes. MDPI 2019-06-23 /pmc/articles/PMC6631585/ /pubmed/31234566 http://dx.doi.org/10.3390/ma12122007 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wei, Xin
Zhou, Haiying
Chen, Fuming
Wang, Ge
Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure
title Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure
title_full Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure
title_fullStr Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure
title_full_unstemmed Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure
title_short Bending Flexibility of Moso Bamboo (Phyllostachys Edulis) with Functionally Graded Structure
title_sort bending flexibility of moso bamboo (phyllostachys edulis) with functionally graded structure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631585/
https://www.ncbi.nlm.nih.gov/pubmed/31234566
http://dx.doi.org/10.3390/ma12122007
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