中国物理B ›› 2024, Vol. 33 ›› Issue (3): 36101-036101.doi: 10.1088/1674-1056/acf447

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Residual stress modeling of mitigated fused silica damage sites with CO2 laser annealing

Chuanchao Zhang(张传超), Wei Liao(廖威), Lijuan Zhang(张丽娟), Xiaolong Jiang(蒋晓龙), Zhenhua Fang(方振华), and Xiaodong Jiang(蒋晓东)   

  1. Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2023-05-07 修回日期:2023-08-09 接受日期:2023-08-28 出版日期:2024-02-22 发布日期:2024-02-29
  • 通讯作者: Chuanchao Zhang E-mail:zhchch@caep.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 62275235).

Residual stress modeling of mitigated fused silica damage sites with CO2 laser annealing

Chuanchao Zhang(张传超), Wei Liao(廖威), Lijuan Zhang(张丽娟), Xiaolong Jiang(蒋晓龙), Zhenhua Fang(方振华), and Xiaodong Jiang(蒋晓东)   

  1. Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2023-05-07 Revised:2023-08-09 Accepted:2023-08-28 Online:2024-02-22 Published:2024-02-29
  • Contact: Chuanchao Zhang E-mail:zhchch@caep.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 62275235).

摘要: A numerical model based on measured fictive temperature distributions is explored to evaluate the residual stress fields of CO2 laser-annealed mitigated fused silica damage sites. The proposed model extracts the residual strain from the differences in thermoelastic contraction of fused silica with different fictive temperatures from the initial frozen-in temperatures to ambient temperature. The residual stress fields of mitigated damage sites for the CO2 laser-annealed case are obtained by a finite element analysis of equilibrium equations and constitutive equations. The simulated results indicate that the proposed model can accurately evaluate the residual stress fields of laser-annealed mitigated damage sites with a complex thermal history. The calculated maximum hoop stress is in good agreement with the reported experimental result. The estimated optical retardance profiles from the calculated radial and hoop stress fields are consistent with the photoelastic measurements. These results provide sufficient evidence to demonstrate the suitability of the proposed model for describing the residual stresses of mitigated fused silica damage sites after CO2 laser annealing.

关键词: fused silica, damage mitigation, residual stress, laser annealing

Abstract: A numerical model based on measured fictive temperature distributions is explored to evaluate the residual stress fields of CO2 laser-annealed mitigated fused silica damage sites. The proposed model extracts the residual strain from the differences in thermoelastic contraction of fused silica with different fictive temperatures from the initial frozen-in temperatures to ambient temperature. The residual stress fields of mitigated damage sites for the CO2 laser-annealed case are obtained by a finite element analysis of equilibrium equations and constitutive equations. The simulated results indicate that the proposed model can accurately evaluate the residual stress fields of laser-annealed mitigated damage sites with a complex thermal history. The calculated maximum hoop stress is in good agreement with the reported experimental result. The estimated optical retardance profiles from the calculated radial and hoop stress fields are consistent with the photoelastic measurements. These results provide sufficient evidence to demonstrate the suitability of the proposed model for describing the residual stresses of mitigated fused silica damage sites after CO2 laser annealing.

Key words: fused silica, damage mitigation, residual stress, laser annealing

中图分类号:  (Ultraviolet, visible, and infrared radiation effects (including laser radiation))

  • 61.80.Ba
63.50.Lm (Glasses and amorphous solids) 42.70.Ce (Glasses, quartz) 78.20.-e (Optical properties of bulk materials and thin films)