Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 91, Issue -, Pages 448-460Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2016.03.026
Keywords
Digital image correlation; Virtual fields method; Simulated experiments; Test optimization
Funding
- China Scholarship Council (CSC)
- Royal Society
- Wolfson Foundation through a Royal Society Wolfson Research Merit Award
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This paper presents a step towards the design of a novel test for simultaneous identification of all the stiffness components of orthotropic composite materials. A simulator was adopted to numerically simulate the whole identification process. Synthetic images were generated and then processed by Digital Image Correlation (DIC) to calculate the strain fields. The Virtual Fields Method (VFM) was used to identify the material stiffness parameters and error functions were finally defined to evaluate the identification error. Two steps of optimization were applied to obtain the best design variables of different specimens and the optimal DIC processing parameters. Four types of test configuration were simulated including short off-axis tensile test, short off-axis open-hole tensile test, off-axis Brazilian disc and off-axis unnotched losipescu test and the most promising configuration was identified. (C) 2016 Elsevier Ltd. All rights reserved.
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