Numerical investigation of thermo-mechanical behaviour of composite under local laser heating

Xiao Li; Xiaowu Ni; Zhonghua Shen; Zewen Li

doi:10.1117/12.2202944

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15 October 2015 Numerical investigation of thermo-mechanical behaviour of composite under local laser heating

Xiao Li, Xiaowu Ni, Zhonghua Shen, Zewen Li

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Proceedings Volume 9671, AOPC 2015: Advances in Laser Technology and Applications; 96711X (2015) https://doi.org/10.1117/12.2202944
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

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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Xiao Li, Xiaowu Ni, Zhonghua Shen, and Zewen Li "Numerical investigation of thermo-mechanical behaviour of composite under local laser heating", Proc. SPIE 9671, AOPC 2015: Advances in Laser Technology and Applications, 96711X (15 October 2015); https://doi.org/10.1117/12.2202944

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