Tearing and Delaminating of a Polymer Laminate

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Full text:
Author(s): Sharon Kao-Walter, Mats Walter, A Dasari, Armando Leon
Title: Tearing and Delaminating of a Polymer Laminate
Translated title:
Journal: Key Engineering Materials
Year: 2011
Volume: 465
Pagination: 169-174
ISSN: 1013-9826
Publisher: @scientific.net
URI/DOI: 4doi:10.028/www.scientific.net/KEM.454
ISI number: 000291704700036
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för ingenjörsvetenskap - avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona, School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
Language: English
Abstract: The fracture behaviour of laminated materials was studied in this work. The materials used in this work were low-density polyethylene (LDPE) laminated on polyethylene (PET). The thickness of the LDPE was 27 μm and the PET was 100 μm. Experiments were performed by using a 2-leg trousers specimen to analyse the tearing behaviour of the laminate in relation to the delamination. A clear delamination zone was observed during the crack propagation by tearing. Furthermore, a finite element calculation was performed to simulate the behavior around the crack tip during the tearing.
A correlation between adhesion and crack propagation was discussed. Finally, the theory of Essential Work of Fracture (EWF) was used for predicting the specific total work of fracture along the tear path across the plastic zones.
Subject: Mechanical Engineering\General
Keywords: Tearing, laminate, delaminate, Essential Work of Fracture, 2-leg trousers.