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Increasing the efficiency of laser-controlled thermal splitting of silicate glasses using the photoelasticity method

Authors: Sereda, A. A.; Nikitiuk, Yu. V.; Serdiukov, A. N.; Shershnev, E. B.; Sokolov, S. I.;

Increasing the efficiency of laser-controlled thermal splitting of silicate glasses using the photoelasticity method

Abstract

A method for monitoring the development of a separating crack in the process of laser-controlled thermal splitting of silicate glasses is proposed. This method is based on the polarization-optical method (photoelasticity method). The method was developed on the basis of numerical modeling and experimental studies of the process using a polarized light source and a video camera with an analyzer. During the cutting process, a source of polarized light creates a stream, which, passing through silicate glass, enters a video camera with an analyzer. Analysis of the parameters of polarized light in the area of material processing allows us to drawa conclusion about the stable development or absence of the formation of a separating microcrack. Based on the information obtained, it is necessary to dynamically make corrections to the technological parameters of the laser thermal splitting process for separating silicate glasses to maintain the value of thermoelastic stresses necessary for the formation of a microcrack, or transmit a command to interrupt the process. Предложен метод контроля развития разделяющей трещины в процессе лазерного управляемого термораскалывания силикатных стекол, в основе которого лежит поляризационно-оптический метод (метод фотоупругости). Метод разработан на базе численного моделирования и экспериментальных исследований процесса с использованием источника поляризованного света и видеокамеры с анализатором. Во время процесса резки источник поляризованного света создает поток, который, проходя через силикатное стекло, попадает в видеокамеру с анализатором. Анализ параметров поляризованного света в области обработки материала позволяет сделать вывод об устойчивом развитии или отсутствии образования разделяющей микротрещины. По полученной информации необходимо динамически вносить коррекцию в технологические параметры процесса лазерного термораскалывания разделения силикатных стекол для поддержания значения термоупругих напряжений, необходимых для формирования микротрещины, либо передавать команду прерывания процесса.

Keywords

Численное моделирование, Laser thermal splitting, Photoelasticity, Термоупругие напряжения, Фотоупругость, Лазерное термораскалывание, Numerical modeling, Thermoelastic stresses

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green