Study of Shear Dominant Delamination in Thin Brittle-High Ductile Interface

Islam, Md. Shafiqul; Zhang, Defeng; Mehmood, Nasir; Kao-Walter, Sharon

doi:10.1016/j.prostr.2016.06.020

Cited by 4 publications

(6 citation statements)

References 7 publications

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“…Studying the tearing of thin polymer laminates become involved as the films in the laminate respond differently under load compared to individual layer; this has been investigated by several authors (Bjerkén et al 2006;Andreasson et al 2014;Zhang et al 2016;Kao-Walter et al 2006, 2009, 2011Islam et al 2016). Kao-Walter et al (2011) investigated the LDPE-PET laminate under tearing and observed delamination in the interface which increased along with tear crack propagation.…”

Section: Introductionmentioning

confidence: 99%

Trouser tear testing of thin anisotropic polymer films and laminates

2019

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This research has investigated the essential work of fracture (EWF) from trouser tear test of polyethylene terephthalate (PET), low-density polyethylene (LDPE) films and their corresponding laminate using a convenient cyclic tear test method. Propagation of tear crack in these thermoplastics deflects from the initial crack path due to the material anisotropy. An improvement to a two-zone tear model for determining tear EWF was proposed for LDPE-like materials. Energy dissipation due to non-uniform bending of the trouser-legs was determined to be significant in EWF calculation of tearing and this was therefore considered in this study. To measure the tear EWF in laminates, contribution from delamination energy dissipation was accounted for.

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Section: Introductionmentioning

confidence: 99%

Trouser tear testing of thin anisotropic polymer films and laminates

2019

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“…This makes the study of adhesion between them very important in packaging applications and many previous works have addressed this phenomenon. [3,4,6,7,[34][35][36][37] Firstly, a simplified analytical beam theory model of this multi-layered packaging material was considered for the peel study in this work. This model is depicted in the left lower part of Figure 1.…”

Section: Models Of Laminatementioning

confidence: 99%

“…[1] Specifically, thin flexible laminates which are important in liquid food industry are experimentally and numerically studied by many authors. [2][3][4][5][6][7] To begin with, it is necessary to know material properties for constituents of laminate. Additionally, the cohesive properties of the interface between layers are important and it was the focus of the present study.…”

Section: Introductionmentioning

confidence: 99%

Peeling of metal foil from a compliant substrate

Islam

Alfredsson

2019

The Journal of Adhesion

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Large displacement peel was studied for cases where a compliant substrate leads to a large value of the root rotation. An existing simplified beam model to calculate the peel fracture energy was modified to allow for a kinematic hardening beam model of the foil. The steady-state peel force and the root rotation were used as input data to the resulting analytical beam model. Test results from the literature were analysed. A more elaborate finite element model was also studied, using cohesive elements for the interface layer between the foil and the substrate. The cohesive zone parameters used were the fracture energy, the cohesive strength and a shape parameter. An optimization scheme for the cohesive zone parameters was developed and optimized against experimental steady-state peel force and root rotation. The optimization scheme was effective to characterize the cohesive parameters. The method yields similar values of fracture energy for the two peel angles, with the one for 180 being slightly higher than for 90. The difference in fracture energies for different peel angles suggests that the fracture energy can be mode dependent.

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“…Looking at the packaging industry, data-driven simulations is well-established and supports the engineering team in the process of predicting the realistic behavior of the material structure (e.g., Islam et al 2016). However, existing approaches are not yet at the level to leverage aspects related to consumer value in the early stage decision-making process.…”

Section: Case Studymentioning

confidence: 99%

Data-driven value assessment of packaging solutions

Chowdhery

Bertoni

2018

IFAC-PapersOnLine

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Abstract:Research in Product Service Systems design increasingly focuses on how to develop 'capabilities' for assessing the value of solutions already in a design project fuzzy front end. A datadriven approach shall then guide engineers in the process of identifying what to develop, and not merely to verify if a solution meets (or not) performance requirements. This process of frontloading problem identification and solution generation activities with models is of high interest to raise quality and lower risk and cost for the development work. The objective of the paper is to explore the use of a data-driven approach to enable value prediction of packaging material configurations in early design. Its main objective is to present a methodological approach and a framework to connect high-level aspects of customer value with simulations and analysis conducted on the mechanical properties of packaging material.

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Study of Shear Dominant Delamination in Thin Brittle-High Ductile Interface

Cited by 4 publications

References 7 publications

Trouser tear testing of thin anisotropic polymer films and laminates

Trouser tear testing of thin anisotropic polymer films and laminates

Peeling of metal foil from a compliant substrate

Data-driven value assessment of packaging solutions

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