Bending strength analysis of micro WC-shaft manufactured by micro electro-discharge machining

被引：0
|
作者：
Yan, Biing Hwa [1 ]
Huang, Sheng Ho [1 ]
Huang, Fuang Yuan [1 ]
机构：
[1] Department of Mechanical Engineering, National Central University, Chung-Li, 32054, Taiwan
来源：
| 1600年 / Springer-Verlag London Ltd卷 / 29期
关键词：
Micro electro-discharge machining (micro-EDM) is a critical technology to fabricate high aspect ratio 3D micro-components. However; the surfaces of micro-components manufactured by micro-EDM will exhibit micro-cracks to produce notch effects; and lead to stress concentrate and reduction of fatigue strength. This paper performs micro-bending tests to investigate the influence of various roughness and size on the bending fracture strength of micro WC-shafts manufactured by micro-EDM. The experimental results indicate that the surface roughness; axial surface area; volume; and length of the specimen will affect its bending fracture strength. For specimens with the same size; the mean bending fracture strength decreases as the surface roughness increases; and the bending fracture probability of the specimens also increases (roughness effect). For specimens with the same roughness; reducing the length or axial surface area will increase the mean bending fracture strength; and reduces the bending fracture probability (size effect);
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页码：7 / 8
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