2008, Volume 10, Issue 7
Strategic Study of CAE >> 2008, Volume 10, Issue 7
Experimental studies on the mechanical properties of A95ceramic film by the digital speckle correlation method
Department of Mechanics and Mechanical Engineering, University of Science and Technology of China, Hefei 230027, China
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Abstract
The ceramic materials have a series of excellent physical and mechanical properties.These properties make ceramic materials possess irreplaceable ascendancies in the area of anti-impact and anti-penetration when they act as armors and parts of the engines. And their superhard and superfragile characters will bring many new challenges to researchers, especially in the measurement of strain.The digital speckle correlation technique is introduced in this paper to study the distortion process of ceramic materials under the static loading. The methods of the sub-pixels search and bilinear interpolation are used in the digital image processing. As the digital speckle correlation method (DSCM) can't be directly used in measuring deformation, an improved multilevel DSCM is proposed. The mechanical properties of the A95 ceramic material is measured in the experiments. The results of the experiments are satisfied.
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References
[ 1 ] 杜忠华,赵国志,杨玉林.陶瓷桙玻璃纤维桙钢板复合靶板抗弹性能的研究[J].兵工学报,2003,24(2):219-221 link1
[ 2 ] 李英雷,胡时胜,李英华.A95陶瓷材料的动态压缩测试研究[J].爆炸与冲击,2004,24(3):233-239 link1
[ 3 ] Tong W , Tao H , Zhang N , et al . Time - resolved strain mapping measurements of individual Portevin-Le Chatelier deformation bands [J] . Scripta Materialia , 2005 , 53 : 87 - 92 link1
[ 4 ] Zhou Peng , Goodson K E . Subpixel displacement and deformation gradient measurement using digital image/speckle correlation(DISC) [J] . Opt Eng , 2001 , 40(8) : 1613 - 1620 link1
[ 5 ] 刘颢文,张青川,项国富,等.白光散斑相关法多尺度分析Portevin-Le Chatelier 变形带变形[J].实验力学,2005,20(4):487-493 link1
[ 6 ] 刘颢文,张青川,卢俊勇,等.Al-Cu合金中PLC剪切带成核过程三维变形的实验研究[J].金属学报,2006,42(9):925-930 link1
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