Change search
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
Study of Shear Dominant Delamination in Thin Brittle-High Ductile Interface
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. (Tetra Pak)ORCID iD: 0000-0002-1162-7023
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. (Tetra Pak)
2015 (English)In: National Agency for Finite Element Methods and Standards (NAFEMS), 2015Conference paper, (Other (popular science, discussion, etc.))
Abstract [en]

Thin laminates of Aluminum (Al) and Low Density Polyethylene (LDPE) is an essential constituent of food packages where these two substrates are bonded together with a thin layer of LDPE acting as adhesive. Noticeably, Al is a low ductile/quasi brittle material whereas, LDPE is highly ductile.  The mechanism of delamination and strength of bond between the interfaces dictates the continuum and damage behaviour of this composite. However, measuring the shear delamination is challenging as conventional test methods have limitations when the substrates are very thin. This study explains a method that uses uniaxial tensile testing on the pre-cracked specimen of this composite to find energy dissipation due to shear delamination and successfully use it in Finite Element Simulation in Abaqus. The delamination was observed in a narrow strip region close to fracture surfaces and measured with special visualization aid. Similar response was found in FEM simulation. Scanning Electron Microscopic (SEM) study of delaminated interface confirms the domination of shearing. In a cohesive zone modelling in Finite Element Simulation software, the shear delamination energy was used as input parameter along with an arbitrary bi-linear cohesive law. The substrates’ constitutive response was modelled considering non linear plasticity and softening. Finally proposed delamination energy separation method was validated with comparison between the physical tests and FEM simulations.

Place, publisher, year, edition, pages
2015.
Keyword [en]
Shear Dlamination, Thin Packaging Material, Composites, Cohesive Zone Modelling, Finite Element Simulation, Tensile Testing
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:bth-11607OAI: oai:DiVA.org:bth-11607DiVA: diva2:900613
Conference
NORDIC Seminar: Simulating Composite Materials and Structures, Stockholm
Available from: 2016-02-04 Created: 2016-02-04 Last updated: 2016-02-05Bibliographically approved

Open Access in DiVA

fulltext(178 kB)108 downloads
File information
File name FULLTEXT01.pdfFile size 178 kBChecksum SHA-512
ec5f604bdd1c50b961ef6c0cba32ecf287ec40d6e49c7181b0705da79de603cd3a20008d36571ba08dcbd00d847814beeedb3f1047aa027ac22d626ca93b2007
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Islam, Md. Shafiqul IslamZhang, DefengMehmood, NasirKao-Walter, Sharon
By organisation
Department of Mechanical Engineering
Applied Mechanics

Search outside of DiVA

GoogleGoogle Scholar
Total: 108 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 246 hits
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