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Investigation of Polymer packaging films behavior subjected to tension and tearing
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

 The course of polymer film functioning has been a crucial concern in the advent of packaging technology. The thesis project aims towards obtaining an understanding of mechanical properties for a class of these materials, namely LDPE and PET. A constitutive understanding of this behavior in the case of LDPE is acquired through incorporating a plastic stress strain relationship in an iterative approach with focus put on the sensitivity of a few parameters by following a simple linear curve-fit technique in a way that the global as well as the local response are predictable. FE-models also developed in this way are validated with experimental data. An inverse analysis testing validity or usefulness of DIC technique in identifying a material model is done and some discussions are drawn towards this area. A relative numerical study with respect to experimentally obtained global response for tearing of these polymers is done through use of a similar material model developed from tensile tests and the challenges faced in this area have been addressed. 

Place, publisher, year, edition, pages
2017. , 107 p.
Keyword [en]
DIC (Digital image correlation), Finite Element (FE) Model, LDPE (Low-Density Polyethylene), Material model, PET (Polyethylene Tetra phthalate)
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:bth-15002OAI: oai:DiVA.org:bth-15002DiVA: diva2:1131609
Subject / course
MT2525 Masters Thesis (120 credits) in Mechanical Engineering with emphasis on Structural Engineering
Educational program
MTAMT Master of Science Programme in Mechanical Engineering with emphasis on Structural Mechanics
Supervisors
Examiners
Available from: 2017-08-15 Created: 2017-08-15 Last updated: 2017-08-30Bibliographically approved

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BTH2017Maddala(8013 kB)11 downloads
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Type fulltextMimetype application/pdf

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf