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ISSN: 1023-5086


ISSN: 1023-5086

Scientific and technical

Opticheskii Zhurnal

A full-text English translation of the journal is published by Optica Publishing Group under the title “Journal of Optical Technology”

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DOI: 10.17586/1023-5086-2023-90-06-15-24

УДК: 621.791.78

Parameters optimization of silicate glass two-beam asymmetric laser splitting

For Russian citation (Opticheskii Zhurnal):

Никитюк Ю.В., Середа А.А., Сердюков А.Н., Шалупаев С.В., Аушев И.Ю. Оптимизация параметров двухлучевого ассиметричного лазерного раскалывания силикатного стекла // Оптический журнал. 2023. Т. 90. № 6. С. 15–24.


Nikityuk Yu.V., Sereda A.A., Serdyukov A.N., Shalupaev S.V., Aushev I.Yu. Parameters optimization of silicate glass two-beam asymmetric laser splitting [In Russian] // Opticheskii Zhurnal. 2023. V. 90. № 6. P. 15–24.

For citation (Journal of Optical Technology):

Yuri Nikitjuk, Andrey Sereda, Anatoly Serdyukov, Sergey Shalupaev, and Igor Aushev, "Parametric optimization of silicate-glass-based asymmetric two-beam laser splitting," Journal of Optical Technology. 90(6), 296-301 (2023)


Subject of study. Optimization of parameters of non­through oblique cracks in the process of two­beam laser asymmetric cracking of silicate glasses based on metamodeling. The purpose of the work. Development of models for the selection of optimal technological modes for applying inclined cracks during laser splitting of silicate glass with specified parameters, increasing the efficiency of the process of creating rounded edges during two­beam asymmetric laser splitting of glass products. Method. Multi­criteria search for optimal technological regimes of laser processing using the MOGA genetic algorithm for the formation of rounded edges with specified geometric parameters in glass products. Main results. The calculation of the geometric parameters of inclined cracks, temperatures and thermoelastic stresses was performed using the APDL programming language of the ANSYS program. For the numerical experiment, a face­centered version of the central compositional plan of the experiment was used. The experimental plan was formed for four factors (P1–P4): the laser radiation power of the YAG laser, the radiation wavelength of which is 1.06 µm; laser radiation power of a CO2 laser, the radiation wavelength of which is 10.6 µm; shifting the center of the YAG laser beam relative to the center of the CO2 laser beam in a direction perpendicular to the material processing line; the speed of movement of laser beams and coolant along the material processing line. The maximum values of temperature and thermoelastic stresses in the laser treatment zone, as well as the geometric parameters of the inclined crack induced by laser radiation, were used as responses. The influence of technological regimes of material processing (factors P1–P4) on the geometrical parameters of an inclined crack has been evaluated. The most significant technological parameters of glass products processing, which affect the maximum temperatures that occur in the material during laser thermal splitting, are the processing speed and the power of laser radiation with a wavelength of 10.6 µm. Significant parameters that affect the magnitude of thermoelastic stresses are the processing speed and the power of laser radiation with a wavelength of 1.06 µm. In this case, the geometric characteristics of inclined cracks depend significantly on the radiation power of the YAG laser and on the displacement of the center of the beam of this laser relative to the center of the CO2 laser beam. Using the TensorFlow package, an artificial neural network was created, the training and testing of which was carried out on samples formed when solving the corresponding problems by the finite element method in the ANSYS program. The results of determining the output parameters using a neural network model and a model created using the nonparametric regression method are compared. The following criteria were used to optimize asymmetric glass cracking: maximum tensile stresses and maximum processing speed for given values of the oblique crack parameters. The use of the genetic algorithm ensured the maximum relative error of the results, not exceeding 9% when determining temperatures and 12% when determining thermoelastic stresses. The relative error in determining the values of the geometric parameters of inclined cracks did not exceed 20%. Practical significance. The proposed technique makes it possible to determine the technological regimes for the formation of laser­induced non­through oblique cracks with specified geometric parameters.


laser splitting, glass plate, optimization, MOGA, ANSYS

OCIS codes: 350.3390


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