Alsayednoor, J., Lennard, F. , Yu, W.R. and Harrison, P. (2017) Influence of specimen pre-shear and wrinkling on the accuracy of uniaxial bias extension test results. Composites Part A: Applied Science and Manufacturing, 101, pp. 81-97. (doi: 10.1016/j.compositesa.2017.06.006)
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Abstract
The influence of unintended specimen pre-shear and out-of-plane wrinkling on the accuracy of shear angle and axial force results, measured during a uniaxial bias extension (UBE) test on engineering fabrics, is examined. Three techniques of measuring test kinematics are investigated, including manual image analysis, 2-D and 3-D full-field analysis. Error introduced by specimen pre-shear is shown to influence test results in different ways, depending on analysis technique. Procedures to take specimen pre-shear error into account when interpreting results are demonstrated, though an important recommendation resulting from this investigation is to minimise pre-shear as much as possible. Out-of-plane wrinkling is shown to create significant errors in kinematic data when using 2-D analysis methods (up to 20% overestimates of measured shear angle). It is shown that wrinkle-error can be corrected if 3-D stereoscopic analysis methods are employed.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Harrison, Dr Philip and Lennard, Professor Frances and Alsayednoor, Dr Jafar |
| Authors: | Alsayednoor, J., Lennard, F., Yu, W.R., and Harrison, P. |
| College/School: | College of Arts & Humanities > School of Culture and Creative Arts > History of Art College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Composites Part A: Applied Science and Manufacturing |
| Publisher: | Elsevier |
| ISSN: | 1359-835X |
| ISSN (Online): | 1878-5840 |
| Published Online: | 10 June 2017 |
| Copyright Holders: | Copyright © 2017 Elsevier |
| First Published: | First published in Composites Part A: Applied Science and Manufacturing 101:81-97 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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