Effect of Surface Roughness and Fiber-Volume Fraction Variation on Strain Measurements
Variability in material properties is a well-known difficulty encountered when dealing with carbon fiber reinforced polymer (CFRP) composites and is of interest to the Fertig Research Group. Digital image correlation (DIC) is used by the group in order to measure 2-D strain fields on the surface of CFRP specimens. In the course of testing, strain bands, areas with higher or lower strain than expected, were observed. This project focused on possible explanations for this observation. Two possible causes were analyzed using finite element analysis (FEA) techniques. The effect of both thickness ...
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