Numerical investigation on machining glass with CO<sub>2</sub> lasers

doi:10.1007/s12200-009-0014-z

Front Optoelec Chin

2009, Vol. 2

Issue (3) : 334-338 https://doi.org/10.1007/s12200-009-0014-z

RESEARCH ARTICLE

Numerical investigation on machining glass with CO₂ lasers

Junke JIAO^1,2, Xinbing WANG¹(

)

1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China; 2. Institute of Industry Technology, Guangzhou and Chinese Academy of Sciences, Guangzhou 511458, China

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Abstract

When a glass substrate was irradiated by three different temporal shapes of laser sources, namely, line-time-shape laser, triangle-time-shape laser, and parabola-time-shape laser, the mathematical models were proposed, and the temperature distribution and the resulting thermal stress were calculated by the finite-element-method (FEM) software ANSYS. With these three types of lasers having the same output laser energy, the resulting thermal stress induced in the glass substrate was analyzed. The results showed that, with the same output laser energy, the thermal stress produced in glass heated by line-time-shape laser is higher than that produced in glass heated by the other two shapes of lasers.

Keywords laser machining soda-lime glass finite-element-method (FEM) ANSYS

Corresponding Author(s): WANG Xinbing,Email:xbwang@mail.hust.edu.cn

Issue Date: 05 September 2009

Cite this article:

Junke JIAO,Xinbing WANG. Numerical investigation on machining glass with CO₂ lasers[J]. Front Optoelec Chin, 2009, 2(3): 334-338.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-009-0014-z
https://academic.hep.com.cn/foe/EN/Y2009/V2/I3/334

Fig.1 Diagram of glass laser heating and grid structure of glass substrate

Fig.2 Time history of power for line-time-shape, triangle-time-shape, and parabola-time-shape lasers

Tab.1 Physical properties of soda-lime glass

Fig.3 Temperature history in laser heating zone

Fig.4 Thermal stress history in laser heating zone

Fig.5 Temperature distribution on heating surface at time step =10 s

Fig.6 Thermal stress on heating surface at different time for line-time-shape laser

Fig.7 Thermal stress on heating surface at different time for triangle-time-shape laser

Fig.8 Thermal stress on heating surface at different time for parabola-time-shape laser

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