Pulsed Laser Hole Punching in Ceramic Parts.

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%. [ABSTRACT FROM AUTHOR]