Establishing the regression polynomials for the objective function that defines dimensional accuracy in the case of laser drilling

Ion David; Eugen F. Cicala

doi:10.1117/12.312770

2 July 1998 Establishing the regression polynomials for the objective function that defines dimensional accuracy in the case of laser drilling

Ion David, Eugen F. Cicala

Author Affiliations +

Proceedings Volume 3405, ROMOPTO '97: Fifth Conference on Optics; (1998) https://doi.org/10.1117/12.312770
Event: ROMOPTO '97: Fifth Conference on Optics, 1997, Bucharest, Romania

Abstract

The aim of the paper is to optimize the microholes machining, in the case of laser drilling. The laser used for experiments was a Neodim-15 laser. The material used for drilling was 41MoCr11 austenitic stainless steel with a 1,5 mm thickness. As parameters of the laser drilling process were considered: diaphragm diameter, focal point position, focal length of the lens and laser pulse power. The objective functions were the diameter of the microhole in the area of the laser beam entrance of material (Di), the diameter of the microhole in the area where the laser beam exit the material (De), respective their tolerances (Ti and Te). It was used on complete factorial experiment 2⁴. The established mathematical models are useful in finding the optimum values of the parameters in various combinations, such as the hole diameter to be closer to the required diameter.

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Ion David and Eugen F. Cicala "Establishing the regression polynomials for the objective function that defines dimensional accuracy in the case of laser drilling", Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); https://doi.org/10.1117/12.312770

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