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Optical Engineering

Effect of inclusion matrix model on temperature and thermal stress fields of K9-glass damaged by long-pulse laser
Author(s): Yunxiang Pan; Bin Wang; Zhonghua Shen; Jian Lu; Xiaowu Ni
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Paper 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.

Paper Details

Date Published: 12 April 2013
PDF: 8 pages
Opt. Eng. 52(4) 044302 doi: 10.1117/1.OE.52.4.044302
Published in: Optical Engineering Volume 52, Issue 4
Show Author Affiliations
Yunxiang Pan, Nanjing Univ. of Science and Technology (China)
Bin Wang, Nanjing Univ. of Science and Technology (China)
Zhonghua Shen, Nanjing Univ. of Science and Technology (China)
Jian Lu, Nanjing Univ. of Science and Technology (China)
Xiaowu Ni, Nanjing Univ. of Science and Technology (China)


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