The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Micro-mechanisms of a laminated packaging material during fracture

På svenska

Author

Summary, in English

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.

Department/s

Publishing year

2014

Language

English

Pages

313-326

Publication/Series

Engineering Fracture Mechanics

Volume

127

Document type

Journal article

Publisher

Elsevier

Topic

  • Physical Sciences
  • Mathematics
  • Applied Mechanics

Keywords

  • Aluminium
  • Laminate
  • Polymer
  • SEM
  • Toughness

Status

Published

ISBN/ISSN/Other

  • ISSN: 1873-7315