Inlämning av Examensarbete / Submission of Thesis

Abdulfeta Jemal; Rahul Reddy Katangoori BTH-AMT-EX--2011/D-10--SE, pp. 99. ING/School of Engineering, 2011.

The work

Författare / Author: Abdulfeta Jemal, Rahul Reddy Katangoori,
Titel / Title: Fracture Mechanics Applied in Thin Ductile Packaging Materials-Experiments with Simulations
Abstrakt Abstract:

Finding new or improving existing opening solutions for a package are important at Tetra Pak since the development of new polymers films influence the present package opening solutions. Knowing the general mechanical and fractural behavior of the package material is crucial for the understanding and prediction of the overall opening performance. This thesis presents a study of two different polymer materials, Polypropylene (BoPP) and Low-density polyethylene (LDPE). Single layer of BoPP, single layer of LDPE, BoPP with both sides laminated by LDPE with full adhesion(LDPE/BoPP/LDPE) and with no adhesion(LDPE//BoPP//LDPE) are analyzed under Mode I tensile loading. The study is based on physical test together with Finite Element analysis using computer software ABAQUS. The physical test and calibration is done for continuum and fractured (center crack) test specimen. Comparison of the physical test and the numerical analysis showed a convincing match between the two results for every test cases, continuum and fracture, both in machine and cross direction. Fracture toughness calculated using theory of linear elastic fracture mechanics (LEFM), Modified Strip yield model (MSYM) and Experimental test (using global force) and all compared together to determine the possible range of the fracture toughness of BoPP and LDPE.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\Structural Mechanics

Nyckelord / Keywords: Mode I tensile loading, Continuum, Fracture, Fracture toughness, LEFM, MSYM. ABAQUS, FEM.

Publication info

Dokument id / Document id: houn-8m6k7y
Program:/ Programme Masters Programme in Mechanical Engineering 120 ECTS
Registreringsdatum / Date of registration: 09/29/2011
Uppsatstyp / Type of thesis: Masterarbete/Master's Thesis (120 credits)


Handledare / Supervisor: Sharon Kao-Walter
Examinator / Examiner: Ansel Berghuvud
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: ING/School of Engineering

+46 455 38 50 00
I samarbete med / In co-operation with: Tetra Pak Packaging solutions AB
Anmärkningar / Comments:

Rahul Reddy Katangoori
Mobile: +46-(0)-734898260
Abdulfeta Jemal +46-(0)-73588546

Files & Access

Bifogad uppsats fil(er) / Files attached: bth2011jemal.pdf (3150 kB, öppnas i nytt fönster)