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Pulsed Laser Hole Punching in Ceramic Parts
Glass and Ceramics ( IF 0.6 ) Pub Date : 2021-09-16 , DOI: 10.1007/s10717-021-00388-8
A. F. Kovalenko 1
Affiliation  

The problem of determining the strength of cylindrical ceramic parts on punching holes in them is examined within the framework of the theory of developed evaporation of matter by laser radiation. Analytical relations are obtained for calculating the power density of laser radiation, leading to the destruction of the lateral surface of parts by the pressure of gaseous products as a function of the ratio of the hole radius to the part radius, the ratio of the part radius to the radius of the hole in the part, and the thickness of the lateral surface of the part as a function of the power density of the acting laser radiation. The applicability of the results obtained for determining the strength of cylindrical parts is shown for the example of P-25 technical ceramics based on magnesium oxide. When the ratio of the hole radius to the part radius is less than 0.3, the part can be considered as an infinite body. In this case the computational error will not exceed 10%.



中文翻译:

陶瓷零件中的脉冲激光打孔

在通过激光辐射发展的物质蒸发理论的框架内,研究了确定圆柱形陶瓷部件在其上打孔的强度的问题。获得了用于计算激光辐射功率密度的解析关系,作为孔半径与零件半径之比的函数,导致零件侧面被气态产品的压力破坏,零件半径的比值零件中孔的半径和零件侧面的厚度作为作用激光辐射的功率密度的函数。以基于氧化镁的 P-25 技术陶瓷为例,显示了用于确定圆柱部件强度的结果的适用性。当孔半径与零件半径之比小于 0.3 时,零件可视为无限体。在这种情况下,计算误差不会超过 10%。

更新日期:2021-09-17
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