Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Lee, Jae-Hoon, Lee, Sang-Soo, Chang, Jun-Dong, Thompson, Mark S., Kang, Dong-Joong, Park, Sungchan, Park, Seonghun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2013
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
_version_ 1782269912214929408
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
work_keys_str_mv AT leejaehoon anovelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT leesangsoo anovelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT changjundong anovelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT thompsonmarks anovelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT kangdongjoong anovelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT parksungchan anovelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT parkseonghun anovelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT leejaehoon novelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT leesangsoo novelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT changjundong novelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT thompsonmarks novelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT kangdongjoong novelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT parksungchan novelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials
AT parkseonghun novelmethodfortheaccurateevaluationofpoissonsratioofsoftpolymermaterials