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Experimental and numerical assessment of the work of fracture in injection-moulded low-density polyethylene

Kroon, Martin; Andreasson, Eskil; Petersson, Viktor and Olsson, Pär LU (2018) In Engineering Fracture Mechanics 192. p.1-11
Abstract
The fracture mechanics properties of injection-moulded low-density polyethylene (LDPE) sheets were investigated both experimentally and numerically. The total work of fracture was determined experimentally, by means of fracture mechanics testing of sheets of injection-moulded LDPE with side cracks of different lengths. A multi-specimen method, proposed by Kim and Joe (1987), was employed. The total work of fracture was estimated to 13 kJ/m2. The experiments were simulated numerically using the finite element method. Crack growth was enabled by inclusion of a cohesive zone, and the constitutive response of this zone was governed by a traction-separation law. The local (or essential) work of fracture was estimated through numerical analyses,... (More)
The fracture mechanics properties of injection-moulded low-density polyethylene (LDPE) sheets were investigated both experimentally and numerically. The total work of fracture was determined experimentally, by means of fracture mechanics testing of sheets of injection-moulded LDPE with side cracks of different lengths. A multi-specimen method, proposed by Kim and Joe (1987), was employed. The total work of fracture was estimated to 13 kJ/m2. The experiments were simulated numerically using the finite element method. Crack growth was enabled by inclusion of a cohesive zone, and the constitutive response of this zone was governed by a traction-separation law. The local (or essential) work of fracture was estimated through numerical analyses, where the initiation of crack growth was simulated and the outcome was compared to the experimental results. The local (i.e. essential) work of fracture was estimated to 1.7 kJ/m2, which is consistent with previous experimental measurements for the material in question. The total work of fracture, retrieved from the present experiments, agreed well with the far field values of the J-integral in the numerical analyses. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
keywords
Polyethylene, Low-density , Fracture Energy , Cohesive , Injection-moulding , Abaqus, FEM, Polyethylene, Low-density, Fracture, Energy, Cohesive, Injection-moulding, Abaqus, FEM
in
Engineering Fracture Mechanics
volume
192
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:85042193889
ISSN
1873-7315
DOI
10.1016/j.engfracmech.2018.02.004
language
English
LU publication?
yes
id
23bc2601-1271-42fd-b676-0f0b966e0da5
date added to LUP
2018-03-01 07:57:04
date last changed
2018-05-29 11:05:30
@article{23bc2601-1271-42fd-b676-0f0b966e0da5,
  abstract     = {The fracture mechanics properties of injection-moulded low-density polyethylene (LDPE) sheets were investigated both experimentally and numerically. The total work of fracture was determined experimentally, by means of fracture mechanics testing of sheets of injection-moulded LDPE with side cracks of different lengths. A multi-specimen method, proposed by Kim and Joe (1987), was employed. The total work of fracture was estimated to 13 kJ/m2. The experiments were simulated numerically using the finite element method. Crack growth was enabled by inclusion of a cohesive zone, and the constitutive response of this zone was governed by a traction-separation law. The local (or essential) work of fracture was estimated through numerical analyses, where the initiation of crack growth was simulated and the outcome was compared to the experimental results. The local (i.e. essential) work of fracture was estimated to 1.7 kJ/m2, which is consistent with previous experimental measurements for the material in question. The total work of fracture, retrieved from the present experiments, agreed well with the far field values of the J-integral in the numerical analyses.},
  author       = {Kroon, Martin and Andreasson, Eskil and Petersson, Viktor and Olsson, Pär},
  issn         = {1873-7315},
  keyword      = {Polyethylene, Low-density ,Fracture Energy ,Cohesive ,Injection-moulding ,Abaqus, FEM,Polyethylene,Low-density,Fracture,Energy,Cohesive,Injection-moulding,Abaqus,FEM},
  language     = {eng},
  pages        = {1--11},
  publisher    = {Elsevier},
  series       = {Engineering Fracture Mechanics},
  title        = {Experimental and numerical assessment of the work of fracture in injection-moulded low-density polyethylene},
  url          = {http://dx.doi.org/10.1016/j.engfracmech.2018.02.004},
  volume       = {192},
  year         = {2018},
}