Dynamic observation of crack generation during wheel scribing from lateral and back sides using a high-speed camera
Dynamic observation of crack generation during wheel scribing from lateral and back sides using a high-speed camera
复制标题
利用高速相机从侧面和背面动态观察车轮划线过程中裂纹的产生
DOI：
10.1016/j.precisioneng.2019.06.013
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Morita Noboru
中科院分区：
文献类型：
--
作者：
Imai Kentaro;Saito Masahiro;Matsusaka Souta;Matsumoto Yuichiro;Hidai Hirofumi;Chiba Akira;Morita Noboru
轮划线是一种广泛用于分割玻璃基板的技术。然而，划线条件和工具几何形状的优化取决于经验规则，因为裂纹产生和断裂表面形成的主导因素还没有完全了解。本研究采用高速成像可视化划线轮和玻璃基板之间的接触区域中的裂纹产生/传播行为。当轮与玻璃接触时，轮下出现中间裂纹，裂纹位于单个平面上。断口形貌取决于中间裂纹是否相互连通。我们讨论的基础上的裂纹产生/扩展行为的观察断裂表面的形成机制。
Wheel scribing is a technique widely used in dividing glass substrates. However, the optimization of scribing conditions and tool geometry depends on empirical rules because the dominant factors of crack generation and fracture surface formation are not fully understood. The present study visualizes the crack generation/propagation behavior in the contact area between the scribing wheel and glass substrate employing high-speed imaging. Median cracks appeared under the wheel when the wheel came into contact with the glass, with the cracks being located on a single plane. The fracture surface morphology depended on whether the median cracks were connected with each other. We discuss the formation mechanism of the fracture surface on the basis of the observations of crack generation/propagation behavior.