Experimental study on the elastic modulus of WC/Cu composite material with different WC content
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Department of Engineering Mechanics, Kunming University of Science and Technology, Kunming 650500, China;
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Key Laboratory of Yunnan Higher Education Institutes for Mechanical Behavior and Microstructure Design of Advanced Materials, Kunming University of Science and Technology, Kunming 650500, China
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Corresponding author:
GUO Rong-xin, guorx@kmust.edu.cn
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Received Date:
2012-06-07
Accepted Date:
2012-07-09
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Abstract
In order to study the accuracy of determination for elastic modulus of WC/Cu composites by digital image correlation method, WC/Cu composites with different WC content were prepared by powder metallurgy method. On the surface of specimens speckles were made by white paint with carbon powder. The tensile tests of these specimens were made in the universal material testing machine. Meanwhile the speckle figures were recorded by CCD camera. Correlation calculation was performed for the recorded speckle figures. And the calculation results were corrected according to the distortion correction theory. Then the stress-strain curve and elastic modulus of WC/Cu composites under small strain were given. The experimental results are in accordance with the results got by traditional electrical measurement. That means the measurement of elastic modulus of WC/Cu composites by digital image correlation applied to the small samples is correct and reliable.
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References
|
[1]
|
PENG J C,GUO R X,XIA H T. Effect of Cu／WC functionally graded materials microstructure on its properties[J].Science Technology and Engineering,2010,10(12):1-2(in Chinese). |
|
[2]
|
WANG M J,LOU Y,ZHANG H, et al.A study of aluminium oxide dispersion strengthened copper electrodes [J].Mining and Metallurgical Engineering,2001,22(4):48-51(in Chinese). |
|
[3]
|
HU B,HE L F,ZHANG R. Digital image correlation method for rubber elastic modulus measurement [J].Journal of Experimental Mechanics,2011,26(2):3(in Chinese). |
|
[4]
|
ZHANG R,HE L F. Elastic modulus measurement of strand wi-re using digital image correlation [J].Journal of North University of China(Natural Science Edition),2010,31(4):409-413(in Chinese). |
|
[5]
|
PAN B,XU B Q,LI K J. Performance of gradient operators in al-gorithm of gradient-based subpixel registration[J].Optical Techniq-ue,2005,31(1):26-31(in Chinese). |
|
[6]
|
PAN B,XIE H M,DAI F L. An investigation of sub-pixel displa-cements registration algorithms in digital image correlation [J].Chinese Journal of Theoretical and Applied Mechanics,2007,39(2):245-252(in Chinese). |
|
[7]
|
GUO R X, CAI G C,MA K,et al. A comparative study on the subpixel displacement calculation methods used in digital speckle measurement [J].Laser Journal,2005,25(5):2-3(in Chinese). |
|
[8]
|
WU W P. Sub-pixel displacement algorithm and the experimental research of image correlation technology. Wuhan: Huazhong University of Science and Technology,2009:24-28(in Chinese). |
|
[9]
|
PU Z L,CHU J C,MAO X P. Summarization on preparation for particle reinforced metal matrix composites [J].Modern Electric Power,2002,19(6):2-4(in Chinese). |
|
[10]
|
LUO P F,CHAO Y J,SUTTON M A, et al. Accurate measurement of three-dimensional displacement in deformable bodies using computer vision[J].Experimental Mechanics,1993,33(2):123-132. |
|
[11]
|
PAN B,XIE H M CHEN P W, et al. Assessment and correction of lens distortion for digital image correlation [J].Acta Metrologica Sinca,2009,30(1):62-67(in Chinese). |
|
[12]
|
SU X H,ZHAO J G,ZHANG H X. Research on distortion of CCD camera[J].Physics Experimentation,2003,23(9):39-41(in Chinese). |
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