BibTeX:

@article{IJIRSTV5I1029,
     title={Characterisation of Continuous GFRP Composites using Digital Image Correlation (DIC) Technique},
     author={L. Lakshmi Aparna, Dr. G. Chaitanya and Dr. K. Srinivas},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={5},
     number={1},
     pages={118--125},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV5I1029.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

The usage of Glass Fiber Reinforced Plastic (GFRP) composites has drastically increased in today’s world starting from aerospace to sporting goods due to very high strength to weight ratio. GFRP composites have high significance in structural applications. This paper discuses about the material characterization of polymer based Glass Fiber Reinforced composite laminate using whole field non-contact Digital Image Correlation (DIC) technique. DIC is a unique exploring full field optical method used to measure accurate displacement, surface strains of the testing specimens by using speckle pattern on the free surface of material undergoing motion and deformation. It uses high speed, high resolution and accurate Charge-Coupled Device (CCD) cameras for measuring displacement components on the surface. Images and deformation data are captured at the time of testing at every stress cycle and these deformed patterns are correlated with subsets of the reference pattern across the selected Region of Interest (ROI). It was proved that subset size is a sensitive factor that has more effect on DIC because smaller the subset size greater the correlation with expense computational time. It also makes smoothing effect, eliminating noise from strain fields while maintaining the details of the data without altering their natural trend. However the increase in subset size significantly reduces the strain data due to discontinuity in correlation. Because of fast data acquisition this technique is well suited for characterization of material properties. The properties evaluated based on full field data are obtained from DIC measurements by performing series of tests as per American Society for Testing and Materials (ASTM) standards.

Glass Fiber Reinforced Plastic (GFRP), Digital Image Correlation (DIC), Charge-Coupled Device (CCD), Region of Interest (ROI), Subset size, Step size