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Micro-mechanisms of a laminated packaging material during fracture

Andreasson, Eskil; Kao-Walter, Sharon and Ståhle, Per LU (2014) In Engineering Fracture Mechanics 127. p.313-326
Abstract
The micro-mechanisms of fracture in a laminate composed of an aluminium foil and a polymer film are considered in this study. The laminates as well as the individual layers, with and without premade centre-cracks, were tensile tested. Visual inspection of the broken cross-sections shows that failure occurs through localised plasticity. This leads to a decreasing and eventually vanishing cross-section ahead of the crack tip for both the laminate and their single constituent layers. Experimental results are examined and analysed using a slip-line theory to derive the work of failure. An accurate prediction was made for the aluminium foil and for the laminate but not for the freestanding polymer film. The reason seems to be that the polymer... (More)
The micro-mechanisms of fracture in a laminate composed of an aluminium foil and a polymer film are considered in this study. The laminates as well as the individual layers, with and without premade centre-cracks, were tensile tested. Visual inspection of the broken cross-sections shows that failure occurs through localised plasticity. This leads to a decreasing and eventually vanishing cross-section ahead of the crack tip for both the laminate and their single constituent layers. Experimental results are examined and analysed using a slip-line theory to derive the work of failure. An accurate prediction was made for the aluminium foil and for the laminate but not for the freestanding polymer film. The reason seems to be that the polymer material switches to non-localised plastic deformation with significant strain-hardening. (C) 2014 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Aluminium, Laminate, Polymer, SEM, Toughness
in
Engineering Fracture Mechanics
volume
127
pages
313 - 326
publisher
Elsevier
external identifiers
  • wos:000341551700023
  • scopus:84906077865
ISSN
1873-7315
DOI
10.1016/j.engfracmech.2014.04.017
language
English
LU publication?
yes
id
775d3790-df8d-4da2-bd12-50c3d7bdcc70 (old id 4709841)
date added to LUP
2014-10-24 08:09:24
date last changed
2017-10-22 04:21:18
@article{775d3790-df8d-4da2-bd12-50c3d7bdcc70,
  abstract     = {The micro-mechanisms of fracture in a laminate composed of an aluminium foil and a polymer film are considered in this study. The laminates as well as the individual layers, with and without premade centre-cracks, were tensile tested. Visual inspection of the broken cross-sections shows that failure occurs through localised plasticity. This leads to a decreasing and eventually vanishing cross-section ahead of the crack tip for both the laminate and their single constituent layers. Experimental results are examined and analysed using a slip-line theory to derive the work of failure. An accurate prediction was made for the aluminium foil and for the laminate but not for the freestanding polymer film. The reason seems to be that the polymer material switches to non-localised plastic deformation with significant strain-hardening. (C) 2014 Elsevier Ltd. All rights reserved.},
  author       = {Andreasson, Eskil and Kao-Walter, Sharon and Ståhle, Per},
  issn         = {1873-7315},
  keyword      = {Aluminium,Laminate,Polymer,SEM,Toughness},
  language     = {eng},
  pages        = {313--326},
  publisher    = {Elsevier},
  series       = {Engineering Fracture Mechanics},
  title        = {Micro-mechanisms of a laminated packaging material during fracture},
  url          = {http://dx.doi.org/10.1016/j.engfracmech.2014.04.017},
  volume       = {127},
  year         = {2014},
}