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Effect of molecular structures on dynamic compression properties of polyethylene

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Main Authors: Mohd Firdaus, Omar, Hazizan, Md Akil, Zainal Arifin, Ahmad
Other Authors: lendew_firdaus@yahoo.com
Format: Article
Language:English
Published: Elsevier B.V. 2013
Subjects:
Mechanical characterization
Hardening
Polymers
Thermomechanical processing
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/30909
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spelling my.unimap-309092017-11-29T04:57:56Z Effect of molecular structures on dynamic compression properties of polyethylene Mohd Firdaus, Omar Hazizan, Md Akil Zainal Arifin, Ahmad lendew_firdaus@yahoo.com hazizan@eng.usm.my zainal@eng.usm.my Mechanical characterization Hardening Polymers Thermomechanical processing Link to publisher's homepage at http://www.elsevier.com/ The properties of polymers are strongly affected by their molecular structures. Therefore, three different types of polyethylene; low density, low-linear density and high density polyethylene were used in this study to experimentally investigate the dependency and attractive effect of molecular structures towards compressive properties of polyethylene over a wide range of strain rate studied. For the mechanical tests, an experimental technique based on the compression split Hopkinson pressure bar was introduced to perform high strain rate testing whereas a conventional universal testing machine was used to perform static compression testing. Additionally, two constitutive equations were employed to validate the yield behaviour of all tested polyethylene specimens under different levels of strain rates. Results indicated that the molecular structure of polyethylene did affect its mechanical properties in terms of yield behaviour, stiffness, strength, rate sensitivity, activation volume and absorbed energy, respectively. Meanwhile, the levels of strain rates also played as secondary roles that influenced the mechanical properties of the polyethylene specimens. Of the three types of polyethylene specimens, high density polyethylene recorded an excellent performance in terms of yield behaviour, absorbed energy, stiffness, and strength properties than that of other polyethylene specimens. However, low linear polyethylene showed greater rate sensitivity than that of other polyethylene specimens under both static and dynamic regions. Interestingly, both constitutive models almost agreed with the experimental results. 2013-12-30T08:35:20Z 2013-12-30T08:35:20Z 2012-03 Article Materials Science and Engineering A, vol. 538, 2012, pages 125-134 0921-5093 http://www.sciencedirect.com/science/article/pii/S092150931200038X http://hdl.handle.net/123456789/30909 en Elsevier B.V.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Mechanical characterization
Hardening
Polymers
Thermomechanical processing
spellingShingle Mechanical characterization
Hardening
Polymers
Thermomechanical processing
Mohd Firdaus, Omar
Hazizan, Md Akil
Zainal Arifin, Ahmad
Effect of molecular structures on dynamic compression properties of polyethylene
description Link to publisher's homepage at http://www.elsevier.com/
author2 lendew_firdaus@yahoo.com
author_facet lendew_firdaus@yahoo.com
Mohd Firdaus, Omar
Hazizan, Md Akil
Zainal Arifin, Ahmad
format Article
author Mohd Firdaus, Omar
Hazizan, Md Akil
Zainal Arifin, Ahmad
author_sort Mohd Firdaus, Omar
title Effect of molecular structures on dynamic compression properties of polyethylene
title_short Effect of molecular structures on dynamic compression properties of polyethylene
title_full Effect of molecular structures on dynamic compression properties of polyethylene
title_fullStr Effect of molecular structures on dynamic compression properties of polyethylene
title_full_unstemmed Effect of molecular structures on dynamic compression properties of polyethylene
title_sort effect of molecular structures on dynamic compression properties of polyethylene
publisher Elsevier B.V.
publishDate 2013
url http://dspace.unimap.edu.my/xmlui/handle/123456789/30909
_version_ 1643802744003231744
score 13.214268

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