Numerical investigation of thermomechanical behaviour of composite under local laser heating

被引：0
|
作者：
Li, Xiao [1 ]
Ni, Xiaowu [1 ]
Shen, Zhonghua [1 ]
Li, Zewen [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Coll Sci, Nanjing 210094, Jiangsu, Peoples R China
来源：
AOPC 2015: ADVANCES IN LASER TECHNOLOGY AND APPLICATIONS | 2015年 / 9671卷
关键词：
Laser heating; physico-chemical transformations; thermomechanical; composite; HIGH-TEMPERATURES; THERMAL RESPONSE; POLYMERIC MATERIALS; MASS-TRANSFER; MODEL;
D O I：
10.1117/12.2202944
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Thermomechanical behaviour of a glass/epoxy composite plate under local laser irradiation is investigated. Physico-chemical transformations and gas transport in a matrix and fibers are describe by Arrhenius and Darcy's law. The changes of material thermal properties are expressed in terms of the volume fractions of fiber, resin, gas and char. At the same time, we take into account the effects of pore pressure and elevating temperature on thermal stresses and strains. It is established that transverse stress, radius stress and interlayer shear caused by local heating and pore pressure are causes of delamination and cracking of composite plates under laser heating. And interlayer shear can lead failure of composite fast.
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页数：13
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