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A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials
A new method with a simple algorithm was developed to accurately measure Poisson's ratio of soft materials such as polyvinyl alcohol hydrogel (PVA-H) with a custom experimental apparatus consisting of a tension device, a micro X-Y stage, an optical microscope, and a charge-coupled device camera...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3655649/ https://www.ncbi.nlm.nih.gov/pubmed/23737733 http://dx.doi.org/10.1155/2013/930798 |
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author | Lee, Jae-Hoon Lee, Sang-Soo Chang, Jun-Dong Thompson, Mark S. Kang, Dong-Joong Park, Sungchan Park, Seonghun |
author_facet | Lee, Jae-Hoon Lee, Sang-Soo Chang, Jun-Dong Thompson, Mark S. Kang, Dong-Joong Park, Sungchan Park, Seonghun |
author_sort | Lee, Jae-Hoon |
collection | PubMed |
description | A new method with a simple algorithm was developed to accurately measure Poisson's ratio of soft materials such as polyvinyl alcohol hydrogel (PVA-H) with a custom experimental apparatus consisting of a tension device, a micro X-Y stage, an optical microscope, and a charge-coupled device camera. In the proposed method, the initial positions of the four vertices of an arbitrarily selected quadrilateral from the sample surface were first measured to generate a 2D 1st-order 4-node quadrilateral element for finite element numerical analysis. Next, minimum and maximum principal strains were calculated from differences between the initial and deformed shapes of the quadrilateral under tension. Finally, Poisson's ratio of PVA-H was determined by the ratio of minimum principal strain to maximum principal strain. This novel method has an advantage in the accurate evaluation of Poisson's ratio despite misalignment between specimens and experimental devices. In this study, Poisson's ratio of PVA-H was 0.44 ± 0.025 (n = 6) for 2.6–47.0% elongations with a tendency to decrease with increasing elongation. The current evaluation method of Poisson's ratio with a simple measurement system can be employed to a real-time automated vision-tracking system which is used to accurately evaluate the material properties of various soft materials. |
format | Online Article Text |
id | pubmed-3655649 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-36556492013-06-04 A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials Lee, Jae-Hoon Lee, Sang-Soo Chang, Jun-Dong Thompson, Mark S. Kang, Dong-Joong Park, Sungchan Park, Seonghun ScientificWorldJournal Research Article A new method with a simple algorithm was developed to accurately measure Poisson's ratio of soft materials such as polyvinyl alcohol hydrogel (PVA-H) with a custom experimental apparatus consisting of a tension device, a micro X-Y stage, an optical microscope, and a charge-coupled device camera. In the proposed method, the initial positions of the four vertices of an arbitrarily selected quadrilateral from the sample surface were first measured to generate a 2D 1st-order 4-node quadrilateral element for finite element numerical analysis. Next, minimum and maximum principal strains were calculated from differences between the initial and deformed shapes of the quadrilateral under tension. Finally, Poisson's ratio of PVA-H was determined by the ratio of minimum principal strain to maximum principal strain. This novel method has an advantage in the accurate evaluation of Poisson's ratio despite misalignment between specimens and experimental devices. In this study, Poisson's ratio of PVA-H was 0.44 ± 0.025 (n = 6) for 2.6–47.0% elongations with a tendency to decrease with increasing elongation. The current evaluation method of Poisson's ratio with a simple measurement system can be employed to a real-time automated vision-tracking system which is used to accurately evaluate the material properties of various soft materials. Hindawi Publishing Corporation 2013-04-23 /pmc/articles/PMC3655649/ /pubmed/23737733 http://dx.doi.org/10.1155/2013/930798 Text en Copyright © 2013 Jae-Hoon Lee et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Lee, Jae-Hoon Lee, Sang-Soo Chang, Jun-Dong Thompson, Mark S. Kang, Dong-Joong Park, Sungchan Park, Seonghun A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials |
title | A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials |
title_full | A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials |
title_fullStr | A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials |
title_full_unstemmed | A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials |
title_short | A Novel Method for the Accurate Evaluation of Poisson's Ratio of Soft Polymer Materials |
title_sort | novel method for the accurate evaluation of poisson's ratio of soft polymer materials |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3655649/ https://www.ncbi.nlm.nih.gov/pubmed/23737733 http://dx.doi.org/10.1155/2013/930798 |
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