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http://dx.doi.org/10.14346/JKOSOS.2014.29.5.015

The Strain Evaluation of the Notch tip Area for the CFRP/GFRP Hybrid Laminate Plate using the SENT Specimen  

Kang, Ji Woong (Faculty of Health Science, Daegu Haany University)
Publication Information
Journal of the Korean Society of Safety / v.29, no.5, 2014 , pp. 15-21 More about this Journal
Abstract
The aim of this work is conduct the study on light weight and structural performance improvement of the composite wind power blade. GFRP (Glass Fiber Reinforced Plastic) pre-empted by CFRP(Carbon Fiber Reinforced Plastic), the major material of wind power blade, was identified the superiority of mechanical performance through the tensile and fatigue test. SENT(Single Edge Notched Tension) specimen fracture test was conducted on the specimen that laminated together 2 ply CFRP with 4 ply GFRP through DIC(Digital Image Correlation) analysis. The SENT specimen thickness and $a_0/W$ ratio is 1.45 mm and 0.2, respectively. The fracture test accomplished with displacement control with 0.1 mm/min at the room temperature. The experimental apparatus used for the fracture test consisted of a 50kN universal dynamic tester and CCD camera connected to a personal computer (PC), which was used to record images of the specimen surface. Following data acquisition, the images and load-displacements were transferred to the PC, on which the DIC software was implement. The experiment and DIC analysis results show that CFRP/GFRP laminated composite exhibits improvement of the strength, compared with that of the existing blade material. This study shows the result that the strength of CFRP rotor blade of wind turbine satisfies through the experimental and DIC method.
Keywords
blade; CFRP(Carbon Fiber Reinforced Plastic); composite; digital image correlation (DIC); fatigue; GFRP(Glass Fiber Reinforced Plastic); hybrid; SENT(Single Edge Notched Tension); wind power;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 M. A. Sutton, W. J. Woltwr, W. H. Peters, W. F. Ranson and S. R. McNeil, "Determination of Displacement using an Improved Digital Image Correlation Method", Image Vision Computer, Vol. 1, No. 3, pp. 133-139, 1983.   DOI   ScienceOn
2 J.-W. Kang, O.-H. Kwon, T.-K. Kim and S.-J. Cho, "Evaluation of Material Properties about CFRP Composite Adapted for Wind Power Blade by using DIC Method", Journal of the Korean Society for Power System Engineering, Vol. 14, No. 5, pp. 17-23, 2010.   과학기술학회마을
3 R. Ambu, F. Aymerich and F. Bertolino, "Investigation of the Effect of Damage on the Strength of Notched Composite Laminates by Digital Image Correlation", J. Strain Analysis, Vol. 40, No. 5, 2005.
4 Jorge Abanto-Bueno and John Lambros, "Investigation of Crack Growth in Functionally Graded Materials using Digital Image Correlation", Engineering Fracture Mechancs, Vol. 69, pp. 1695-1711, 2002.   DOI
5 M. A. Sutton, Mingqi Cheng, W. H. Peters, Y. J. Chao and S. R. McNeill, "Application of an Optimized Digital Correlation Method to Planar Deformation Analysis", Image and Vision Computing, Vol. 4, No. 3, pp. 143-150, 1986.   DOI   ScienceOn
6 J. D. Helm, "Digital Image Correlation for Specimens with Multiple Growing Cracks", Society for Experimental Mechanics, 2007.
7 M. A. Sutton, J. H. Yan, V. Tiwari, H. W. Schreier and J. J. Orteu, "The Effect of Out-of-plane Motion on 2D and 3D Digital Image Correlation Measurement", Optics and Lasers in Engineering, Vol. 46, pp. 746-757, 2008.   DOI
8 S. U. Yoon, K. Suk, S. H. Jo and K. S. Kang, "Non-destructive Reliability Evaluation of Electronic Device by ESPI", Journal of the Korean Society for Nondestructive Testing, Vol 21, pp. 630-633. 2001.   과학기술학회마을
9 W. H. Peters, W. F. Ranson, M. A. Sutton, T. C. Chu and J. Anderson, "Application of Digital Image Methods to Rigid Body Mechanics", Opt. Eng., Vol. 22, No. 6, pp. 738-742, 1983.
10 Olivier De Almeida, Fabienne Lagattu and Jean Brillaud, "Analysis by a 3D DIC Technique of Volumetric Deformation Gradients : Application to Polypropylene/ EPR/Talc Composites", Composites : Part A(applied science and manufacturing), Vol. 39, pp. 1210-1217, 2007.
11 T.A. Berfield, J.K. Patel, R.G. Shimmin, P.V Braun, J. Lambros and N.R. Sottos, "Micro- and Nanoscale Deformation Measurement of Surface and Internal Planes via Digital Image Correlation", Society for Experimental Mechanics, 2007.
12 W. H. Peter and W. F. Panson, "Digital Image Techniques on Experimental Stress Analysis", Opt. Eng., Vol. 21, 1982.
13 M. A. Sutton, W. H. Wolter, W. F. Panson and S. R. McNeill, "Determination of Displacements using an Improved Digital Image Correlation Method", Image Vision Computer, 1983.
14 E. Verhulp, B.van Rietbergen and R Huiskes, "A Three-dimensional Digital Image Correlation Technique for Strain Measurements in Microstructures", Journal of Biomechanics, Vol. 37, pp. 1313-1320, 2004.   DOI
15 J. D. Helm, S. R. McNeill and M. A. Sutton, "Improved Three-dimensional Image Correlation for Surface Displacement Measurement", Opt. Eng. Vol. 35, No. 7, pp. 1911-1920, 1996.   DOI