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Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers

We compared the results of various microscale indentation creep (microcreep) measurements with macroscale tensile creep (macrocreep) measurements of three common polymers: high-density polyethylene (PE), polypropylene (PP), and polystyrene (PS). The main objective was to verify if the short-term mic...

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Autores principales: Slouf, Miroslav, Steinhart, Milos, Nemecek, Pavel, Gajdosova, Veronika, Hodan, Jiri
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9866530/
https://www.ncbi.nlm.nih.gov/pubmed/36676572
http://dx.doi.org/10.3390/ma16020834
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author Slouf, Miroslav
Steinhart, Milos
Nemecek, Pavel
Gajdosova, Veronika
Hodan, Jiri
author_facet Slouf, Miroslav
Steinhart, Milos
Nemecek, Pavel
Gajdosova, Veronika
Hodan, Jiri
author_sort Slouf, Miroslav
collection PubMed
description We compared the results of various microscale indentation creep (microcreep) measurements with macroscale tensile creep (macrocreep) measurements of three common polymers: high-density polyethylene (PE), polypropylene (PP), and polystyrene (PS). The main objective was to verify if the short-term microcreep experiments could predict long-term macrocreep behavior of the selected polymers, whose properties ranged from very soft and ductile (PE) to very hard and brittle (PS). The second objective was to compare several creep predictive schemes: the empirical power law model (PL) and several types of phenomenological elasto-visco-plastic models (EVP). In order to facilitate this task, we developed a universal program package named MCREEP, which fits PL and EVP models to both tensile and indentation creep data. All experimental results and theoretical predictions documented that: (i) regardless of the creep experiment type, both micro- and macrocreep resistance increased in the following order: PE < PP < PS, (ii) the short-term microcreep experiments could be used to predict qualitatively the long-term macrocreep behavior, and (iii) the simple empirical power law model yielded better predictions of long-term creep behavior than the more sophisticated elasto-visco-plastic models.
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spelling pubmed-98665302023-01-22 Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers Slouf, Miroslav Steinhart, Milos Nemecek, Pavel Gajdosova, Veronika Hodan, Jiri Materials (Basel) Article We compared the results of various microscale indentation creep (microcreep) measurements with macroscale tensile creep (macrocreep) measurements of three common polymers: high-density polyethylene (PE), polypropylene (PP), and polystyrene (PS). The main objective was to verify if the short-term microcreep experiments could predict long-term macrocreep behavior of the selected polymers, whose properties ranged from very soft and ductile (PE) to very hard and brittle (PS). The second objective was to compare several creep predictive schemes: the empirical power law model (PL) and several types of phenomenological elasto-visco-plastic models (EVP). In order to facilitate this task, we developed a universal program package named MCREEP, which fits PL and EVP models to both tensile and indentation creep data. All experimental results and theoretical predictions documented that: (i) regardless of the creep experiment type, both micro- and macrocreep resistance increased in the following order: PE < PP < PS, (ii) the short-term microcreep experiments could be used to predict qualitatively the long-term macrocreep behavior, and (iii) the simple empirical power law model yielded better predictions of long-term creep behavior than the more sophisticated elasto-visco-plastic models. MDPI 2023-01-15 /pmc/articles/PMC9866530/ /pubmed/36676572 http://dx.doi.org/10.3390/ma16020834 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Slouf, Miroslav
Steinhart, Milos
Nemecek, Pavel
Gajdosova, Veronika
Hodan, Jiri
Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers
title Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers
title_full Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers
title_fullStr Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers
title_full_unstemmed Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers
title_short Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers
title_sort correlations between microscale indentation creep and macroscale tensile creep of polymers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9866530/
https://www.ncbi.nlm.nih.gov/pubmed/36676572
http://dx.doi.org/10.3390/ma16020834
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