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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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초록· 키워드
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A digital image correlation(DIC) method is a whole-field measurement technique that acquires surface displacements and strains from images information which characterized a random speckle as intensity grey levels. Recently years, this DIC method is being developed and used increasingly in various research. In this study, we tried to apply to aluminum alloy(Al 6061-T6) using DIC method and strain gauge. DIC results demonstrated the usefulness and ability to determine a strain. The test specimen used in this study was an aluminum alloy(Al 6061-T6, thickness 1 mm). For a strain measurement, a strain gauge was attached at the center of a specimen. A specimen was lightly sprayed with a white paint and a black dot pattern was sprayed on its fully dried white surface to obtain a random speckle. The experimental apparatus used to perform the tensile test consisted of universal dynamic tester(5 kN; T.O. Co.) under displacement speed of 0.5, 1.0 and 3.0 mm/min. A Model 5100 B Scanner(V. Co.) used to obtain a strain. A CCD camera connected to a PC uses to record the images of the specimen surface. After acquisition, the images were transferred to PC where the DIC software was implemented. An acquired image was evaluated by the DIC program. DIC method for displacement and strain was suggests and it results show a good consistent remarkably. DIC results demonstrated the usefulness and ability to determine surface strain was better than by using classical measurements. The strain field measurement using a DIC is so useful that it can be applied to map strain distributions at a full area. DIC method can evaluate a strain change so it can predict a location of fracture. The findings of the investigation suggest that the DIC method is an efficient and reliable tool for full-field monitoring and detailed damage characterization of materials.
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참고문헌 (15)
참고문헌 신청
J. S. Hwang / 1991 / Photoelasticity Experimental Method of the Composite Stress Analysis / Journal of the Korean Society of Mechanical Engineers 31(3):276~292
S. U. Yoon / 2001 / Non-destructive Reliability Evaluation of Electronic Device by ESPI / Journal of the Korean Society for Nondestructive Testing 21:630~633
W. H. Peters / 1983 / Application of Digital Image Methods to Rigid Body Mechanics / Opt. Eng 22(6):738~742
M. A. Sutton / 1983 / Determination of Displacement using an Improved Digital Image Correlation Method / Image vision Computer 1(3):133~139
O. D. Almeida / 2007 / Analysis by a 3D DIC Technique of Volumetric Deformation Gradients: Application to Polypropylene/EPR/talc Composites / Composites : Part A(applied science and manufacturing) 39:1210~1217
S. U. Yoon / 2001 / Non-destructive Reliability Evaluation of Electronic Device by ESPI / Journal of the Korean Society for Nondestructive Testing 21:630~633
W. H. Peters / 1983 / Application of Digital Image Methods to Rigid Body Mechanics / Opt. Eng 22(6):738~742
M. A. Sutton / 1983 / Determination of Displacement using an Improved Digital Image Correlation Method / Image vision Computer 1(3):133~139
O. D. Almeida / 2007 / Analysis by a 3D DIC Technique of Volumetric Deformation Gradients: Application to Polypropylene/EPR/talc Composites / Composites : Part A(applied science and manufacturing) 39:1210~1217
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