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Measuring the compressive modulus of elasticity of pith-filled plant stems
BACKGROUND: The compressional modulus of elasticity is an important mechanical property for understanding stalk lodging, but this property is rarely available for thin-walled plant stems such as maize and sorghum because excised tissue samples from these plants are highly susceptible to buckling. Th...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5680773/ https://www.ncbi.nlm.nih.gov/pubmed/29151845 http://dx.doi.org/10.1186/s13007-017-0250-y |
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author | Al-Zube, Loay A. Robertson, Daniel J. Edwards, Jean N. Sun, Wenhuan Cook, Douglas D. |
author_facet | Al-Zube, Loay A. Robertson, Daniel J. Edwards, Jean N. Sun, Wenhuan Cook, Douglas D. |
author_sort | Al-Zube, Loay A. |
collection | PubMed |
description | BACKGROUND: The compressional modulus of elasticity is an important mechanical property for understanding stalk lodging, but this property is rarely available for thin-walled plant stems such as maize and sorghum because excised tissue samples from these plants are highly susceptible to buckling. The purpose of this study was to develop a testing protocol that provides accurate and reliable measurements of the compressive modulus of elasticity of the rind of pith-filled plant stems. The general approach was to relying upon standard methods and practices as much as possible, while developing new techniques as necessary. RESULTS: Two methods were developed for measuring the compressional modulus of elasticity of pith-filled node–node specimens. Both methods had an average repeatability of ± 4%. The use of natural plant morphology and architecture was used to avoid buckling failure. Both methods relied up on spherical compression platens to accommodate inaccuracies in sample preparation. The effect of sample position within the test fixture was quantified to ensure that sample placement did not introduce systematic errors. CONCLUSIONS: Reliable measurements of the compressive modulus of elasticity of pith-filled plant stems can be performed using the testing protocols presented in this study. Recommendations for future studies were also provided. |
format | Online Article Text |
id | pubmed-5680773 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-56807732017-11-17 Measuring the compressive modulus of elasticity of pith-filled plant stems Al-Zube, Loay A. Robertson, Daniel J. Edwards, Jean N. Sun, Wenhuan Cook, Douglas D. Plant Methods Methodology BACKGROUND: The compressional modulus of elasticity is an important mechanical property for understanding stalk lodging, but this property is rarely available for thin-walled plant stems such as maize and sorghum because excised tissue samples from these plants are highly susceptible to buckling. The purpose of this study was to develop a testing protocol that provides accurate and reliable measurements of the compressive modulus of elasticity of the rind of pith-filled plant stems. The general approach was to relying upon standard methods and practices as much as possible, while developing new techniques as necessary. RESULTS: Two methods were developed for measuring the compressional modulus of elasticity of pith-filled node–node specimens. Both methods had an average repeatability of ± 4%. The use of natural plant morphology and architecture was used to avoid buckling failure. Both methods relied up on spherical compression platens to accommodate inaccuracies in sample preparation. The effect of sample position within the test fixture was quantified to ensure that sample placement did not introduce systematic errors. CONCLUSIONS: Reliable measurements of the compressive modulus of elasticity of pith-filled plant stems can be performed using the testing protocols presented in this study. Recommendations for future studies were also provided. BioMed Central 2017-11-09 /pmc/articles/PMC5680773/ /pubmed/29151845 http://dx.doi.org/10.1186/s13007-017-0250-y Text en © The Author(s) 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Methodology Al-Zube, Loay A. Robertson, Daniel J. Edwards, Jean N. Sun, Wenhuan Cook, Douglas D. Measuring the compressive modulus of elasticity of pith-filled plant stems |
title | Measuring the compressive modulus of elasticity of pith-filled plant stems |
title_full | Measuring the compressive modulus of elasticity of pith-filled plant stems |
title_fullStr | Measuring the compressive modulus of elasticity of pith-filled plant stems |
title_full_unstemmed | Measuring the compressive modulus of elasticity of pith-filled plant stems |
title_short | Measuring the compressive modulus of elasticity of pith-filled plant stems |
title_sort | measuring the compressive modulus of elasticity of pith-filled plant stems |
topic | Methodology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5680773/ https://www.ncbi.nlm.nih.gov/pubmed/29151845 http://dx.doi.org/10.1186/s13007-017-0250-y |
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