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Permanent link (DOI): https://doi.org/10.7939/R3V59R

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Weibull analysis of loading rate effect on the toughening mechanisms of ABS Open Access

Descriptions

Other title
Subject/Keyword
Weibull statistics
toughening mechanisms
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Xu, Jie
Supervisor and department
Ben Jar, P.-Y. (Mechanical Engineering)
Examining committee member and department
Wang, Xiaodong (Mechanical Engineering)
Ben Jar, P.-Y. (Mechanical Engineering)
Martin, Derek (Civil Engineering)
Tang, Tian (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2009-07-27T22:08:04Z
Graduation date
2009-11
Degree
Master of Science
Degree level
Master's
Abstract
Rubber-toughened polymers have extensive applications due to excellent mechanical performances. However, the toughening mechanisms are not completely understood, as current study approaches are too localized for quantitative analysis and deviation from mechanical testing has rarely been taken into consideration. In this study, Weibull statistics is applied to quantify the involvement of crazing and shear yielding mechanisms in poly(acrylonitrile butadiene styrene) (ABS) under tensile loading. Different loading rates were used to vary the involvement of each mechanism. In monotonic loading tests, the dominant deformation mechanism switches from crazing to shear yielding with the increase of crosshead speed. Crazing-dominant toughness values show narrow data scattering while those for shear yielding a broad distribution. The involvement of the deformation mechanisms can be varied through multi-stage loading at different crosshead speeds. Results from the study suggested that the Weibull analysis has the potential for quantifying the roles of various mechanisms in the deformation process.
Language
English
DOI
doi:10.7939/R3V59R
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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