Experimental study on the elastic modulus of WC/Cu composite material with different WC content

YU Hai; GUO Rong-xin; XIA Hai-ting; YAN Feng; ZHANG Yu-bo

doi:10.7510/jgjs.issn.1001-3806.2013.02.001

LASER TECHNOLOGY > 2013 > 37(2): 139-142. > DOI: 10.7510/jgjs.issn.1001-3806.2013.02.001

YU Hai, GUO Rong-xin, XIA Hai-ting, YAN Feng, ZHANG Yu-bo. Experimental study on the elastic modulus of WC/Cu composite material with different WC content[J]. LASER TECHNOLOGY, 2013, 37(2): 139-142. DOI: 10.7510/jgjs.issn.1001-3806.2013.02.001

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Experimental study on the elastic modulus of WC/Cu composite material with different WC content

1.
Department of Engineering Mechanics, Kunming University of Science and Technology, Kunming 650500, China;
2.
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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Received Date: June 06, 2012
Revised Date: July 08, 2012
Published Date: March 24, 2013

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Abstract

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.
- laser technique,
- image processing,
- elastic modulus,
- digital image correlation,
- WC/Cu composites,
- gradient method

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