CO2 laser cleavage of chemically strengthened glass

Furumoto, Tatsuaki; Ogi, Hisashi; Kawabe, Tomoya; Yamaguchi, Mitsugu; Koyano, Tomohiro; Hosokawa, Akira

doi:10.1016/j.jmatprotec.2020.116961

Cited by 9 publications

(2 citation statements)

References 23 publications

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“…Float glass has excellent physical and chemical properties such as optical transparency, smooth surface, and anti-corrosion [ 1 ]. Various laser processing methods have been applied to machining of float glass to meet different needs [ 2 , 3 ]. For example, laser scribing on float glass is an effective method for forming microfluidics in biomedicine [ 4 ], and laser cutting is used to make holes in double glass modules of solar panels [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Revealing the interaction mechanism of pulsed laser processing with the application of acoustic emission

Liu

Rong

Yang

et al. 2023

Front. Optoelectron.

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The mechanisms of interaction between pulsed laser and materials are complex and indistinct, severely influencing the stability and quality of laser processing. This paper proposes an intelligent method based on the acoustic emission (AE) technique to monitor laser processing and explore the interaction mechanisms. The validation experiment is designed to perform nanosecond laser dotting on float glass. Processing parameters are set differently to generate various outcomes: ablated pits and irregular-shaped cracks. In the signal processing stage, we divide the AE signals into two bands, main and tail bands, according to the laser processing duration, to study the laser ablation and crack behavior, respectively. Characteristic parameters extracted by a method that combines framework and frame energy calculation of AE signals can effectively reveal the mechanisms of pulsed laser processing. The main band features evaluate the degree of laser ablation from the time and intensity scales, and the tail band characteristics demonstrate that the cracks occur after laser dotting. In addition, from the analysis of the parameters of the tail band very large cracks can be efficiently distinguished. The intelligent AE monitoring method was successfully applied in exploring the interaction mechanism of nanosecond laser dotting float glass and can be used in other pulsed laser processing fields. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Revealing the interaction mechanism of pulsed laser processing with the application of acoustic emission

Liu

Rong

Yang

et al. 2023

Front. Optoelectron.

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“…It can achieve high splitting efficiency (its splitting speed can reach more than 10 mm/s) and good fracture quality (its arithmetic mean deviation of contour (Ra) can reach less than 10 nm) [3]. Therefore, the TCFM has obvious advantages compared with conventional cutting techniques such as abrasive wheel cutting, diamond saw cutting, abrasive water jet machining, ultrashort pulse laser beam ablation methods and other processing method [1,[4][5][6][7], and Crystals 2022, 12, 801 2 of 18 has become a promising machining method, attracting the interest of many researchers in the field of brittle material processing [8][9][10][11][12]. The thermal stress used to split material in the TCFM is produced by a heat source on the surface or in the body of the workpiece (as shown in Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Splitting Opaque, Brittle Materials with Dual-Sided Thermal Stress Using Thermal-Controlled Fracture Method by Microwave

Cheng

Wang

et al. 2022

Crystals

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The thermal-controlled fracture method has been increasingly focused upon in the high-quality splitting of advanced brittle materials due to its excellent characteristics related to the fact that it does not remove material. For opaque, brittle materials, their poor fracture quality and low machining capacity resulting from their single-sided heat mode is a bottleneck problem at present. This work proposed the use of dual-sided thermal stress induced by microwave to split opaque, brittle materials. The experimental results indicate that the machining capacity of this method is more than twice that of the single-sided heat mode, and the fracture quality in splitting opaque, brittle materials was significantly improved by dual-sided thermal stress. A microwave cutting experiment was carried out to investigate the distribution characteristic of fracture quality by using different workpiece thicknesses and processing parameters. A dual-sided thermal stress cutting model was established to calculate the temperature field and thermal stress field and was used to simulate the crack propagation behaviors. The accuracy of the simulation model was verified using temperature measurement experiments. The improvement mechanism of the machining capacity and fracture quality of this method was revealed using the fracture mechanics theory based on calculation results from a simulation. This study provides an innovative and feasible method for cutting opaque, brittle materials with promising fracture quality and machining capacity for industrial application.

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Superhydrophobic graphene/ceramic templates for the preparation of particulate drugs

Tseng

Yang

2022

Ceramics International

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CO2 laser cleavage of chemically strengthened glass

Cited by 9 publications

References 23 publications

Revealing the interaction mechanism of pulsed laser processing with the application of acoustic emission

Revealing the interaction mechanism of pulsed laser processing with the application of acoustic emission

Splitting Opaque, Brittle Materials with Dual-Sided Thermal Stress Using Thermal-Controlled Fracture Method by Microwave

Superhydrophobic graphene/ceramic templates for the preparation of particulate drugs

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