12 April 2013 Effect of inclusion matrix model on temperature and thermal stress fields of K9-glass damaged by long-pulse laser
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Abstract
A model containing an inclusion matrix heated by a millisecond laser is proposed to calculate temperature and thermal stress fields of K9-glass using a finite element method. First, the evolution of temperature and thermal stress fields is analyzed. Results show that both the upper and lower surfaces are damaged. K9-glass is primarily damaged by the combination of radial and axial stresses. Calculated damage morphology is mainly determined by radial stress. Then damage morphology evolution with the increase of the incident laser energy is investigated, which shows that damage area spreads inward from both the front and rear surfaces. Finally, experimental results of long-pulse laser damage of K9-glass are analyzed. The comparison of numerical results with experimental observations shows a good correlation in damage morphology, which indicates that the built inclusion matrix model is applicable to long-pulse laser damage in K9-glass.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yunxiang Pan, Yunxiang Pan, Bin Wang, Bin Wang, Zhonghua Shen, Zhonghua Shen, Jian Lu, Jian Lu, Xiaowu Ni, Xiaowu Ni, } "Effect of inclusion matrix model on temperature and thermal stress fields of K9-glass damaged by long-pulse laser," Optical Engineering 52(4), 044302 (12 April 2013). https://doi.org/10.1117/1.OE.52.4.044302 . Submission:
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