engleski

Comparison of different digital image registration techniques for damage analysis of fiber reinforced polymers

In this work, a comparison study between Digital Image Correlation and Digital Volume Correlation employed in the damage initiation and growth analysis of fiber-reinforced poylmer is presented. The experimental work was performed on 5.8 mm thick dogbone samples made of epoxy resin reinforced with glass fiber mat. The uniaxial tensile test was conducted in a displacement-controlled mode with a prescribed stroke rate of 2 mm/min. Global DIC was performed to measure displacement fields and calculate strain fields. The global material behavior was estimated during the test with a DIC gauge positioned over the region of interest. The gray level residual maps, corresponding to the gray level residuals at the convergence of the correlation procedure, were investigated to detect discontinuities and monitor damage growth on the specimen surface, as well as in the material bulk.

Digital Image Correlation ; Digital Volume Correlation ; Full-field measurement ; Gray level residuals ; Fiber reinforced polymer

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