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Permanent link (DOI): https://doi.org/10.7939/R31K69

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Examination of Braided Composite Geometric Factors Using Three Dimensional Digital Image Correlation Measurement Techniques Open Access

Descriptions

Other title
Subject/Keyword
braided
digital image correlation
composite
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Leung, Cheequn
Supervisor and department
Nobes, D. S (Mechanical Engineering)
Carey, J. P (Mechanical Engineering)
Examining committee member and department
Nobes, D. S (Mechanical Engineering)
Carey, J. P (Mechanical Engineering)
Adeeb, S. (Civil Engineering)
Ayranci, C. (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2012-08-27T15:27:11Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
The objective of this thesis is to develop and validate an optical measurement tool for composite braided structures and use this tool to examine important variables, braid radius and angle, under tensile loading and to perform initial studies. Current deformation measurement techniques used on composite braids were reviewed. Techniques were compared to one another in terms of their ability to address difficulties specific to braided composites. A digital image correlation based optical measurement system was used. Three tests were performed to determine the accuracy of the system. These include a rigid body motion test, a strain test, and a surface reconstruction test. Main sources of error of the optical measurement system are evaluated and discussed. The braid radius and angle of tubular braided composites under tensile loading was assessed. The effects of braid radius and angle change on calculation of stress and elastic moduli are highlighted.
Language
English
DOI
doi:10.7939/R31K69
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.
Citation for previous publication
Leung, C. K., Melenka, G., Nobes, D. S., and Carey, J. P., “Validation of DIC as an Effective Tool for Composite Tubular Braid Characterization,” CSME International Congress 2012, pp. 1-6, 2012.

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