Prediction model and experimental study of subsurface damage of optical glass

Table 1. Experimental conditions for diamond grit indentation
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Table 1. Experimental conditions for diamond grit indentation
实验参数数值
进给速度 V_f/(µm·min⁻¹) 20
预计压痕深度 l/µm 5~100
超声振幅 A/µm 6
超声振动频率 f/kHz 20

Table 2. Experimental conditions for ultrasonic vibration assisted grinding

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Table 2. Experimental conditions for ultrasonic vibration assisted grinding

实验参数	数值
砂轮宽 b/mm	30
砂轮半径 r_w/mm	150
砂轮转速 V_s/(m·s⁻¹)	25
进给速度 V_w/(µm·min⁻¹)	60
磨削深度 a/µm	5, 10, 15, 20

Table 3. Equivalent fracture toughness of K9 optical glass without ultrasonic vibration
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Table 3. Equivalent fracture toughness of K9 optical glass without ultrasonic vibration
等效特征半径 r/µm 等效断裂韧性 K_EIC/(MPa·m^−1/2)
67.956 0.570
108.972 0.613
130.186 1.150
195.295 1.103
341.345 0.582
平均值 0.819

Table 4. Equivalent fracture toughness of K9 optical glass under ultrasonic vibration condition
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Table 4. Equivalent fracture toughness of K9 optical glass under ultrasonic vibration condition
等效特征半径 r/µm 等效断裂韧性 K_EIC/(MPa·m^−1/2）
123.517 1.563
129.391 1.172
172.006 1.111
287.731 0.968
370.726 1.574
平均值 1.352

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Rui GAO, Chen JIANG, Guanghe YAN, Yongbin ZHANG. Prediction model and experimental study of subsurface damage of optical glass[J]. Optical Instruments, 2019, 41(5): 53

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Paper Information

Category: DESIGN AND RESEARCH

Received: Dec. 30, 2018

Accepted: --

Published Online: May. 19, 2020

The Author Email: Chen JIANG (jc_bati@163.com)

DOI:10.3969/j.issn.1005-5630.2019.05.008

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Experimental conditions for diamond grit indentation

Table 1. Experimental conditions for diamond grit indentation

Table 2. Experimental conditions for ultrasonic vibration assisted grinding

Table 2. Experimental conditions for ultrasonic vibration assisted grinding

Table 3. Equivalent fracture toughness of K9 optical glass without ultrasonic vibration

Table 3. Equivalent fracture toughness of K9 optical glass without ultrasonic vibration

Table 4. Equivalent fracture toughness of K9 optical glass under ultrasonic vibration condition

Table 4. Equivalent fracture toughness of K9 optical glass under ultrasonic vibration condition