考虑热解损伤的碳纤维复合材料层合板温度场研究

IF 5 2区 工程技术 Q1 ENGINEERING, MECHANICAL
Guotao Chen , Ling Liu , Yunhe Yu , Zhiyuan Mei , Shaosong Min
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引用次数: 0

摘要

为解决纤维增强树脂基复合材料在高温下的热解问题,对碳纤维增强复合材料(T700/350)在不同温度下的传热特性进行了实验研究。利用红外热成像技术检测复合材料未暴露表面的温度场和内部分层情况。在此基础上,基于ABAQUS软件的UMATHT子程序,构建了复合材料层合板的热响应模型,同时考虑了层合板面内和厚度方向的传热。研究结果表明:单侧加热条件下,碳纤维复合材料层合板受热区温度沿面内方向和厚度方向逐渐变化;当炉温从350°C上升到400°C时,暴露表面发生热反应,层压板由于热应力而发生内部分层。随着炉温的升高,物料在裸露表面的热解反应加剧,直至发生炭化,并沿厚度方向扩展。所采用的红外热成像设备不仅可以准确测量层压板未暴露表面的温度场,而且可以有效地检测层压板内部的分层。仿真结果表明,所建立的热解响应模型不仅能有效模拟单侧加热条件下复合材料层合板温度场及初始热分解温度的变化特征,还能模拟材料的热解反应温度、热解密度变化及炭化规律。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on the temperature field of carbon fiber composite laminates considering pyrolysis damage
To overcome the pyrolysis problem of fiber-reinforced resin matrix composites at high temperature, the heat transfer characteristics of carbon fiber-reinforced composites (T700/350) were experimentally studied at different temperatures. Infrared thermal imaging was used to detect the temperature field and internal delamination of the unexposed surface of the composites. Furthermore, based on the UMATHT subroutine of the ABAQUS software, a thermal response model for the composite laminates was constructed, which considered heat transfer in both the in-plane and thickness directions. The research results show that the temperature of the heated zone of the carbon fiber composite laminates varies gradually along the in-plane and thickness directions under unilateral heating conditions. As the furnace temperature rises from 350 °C to 400 °C, a thermal reaction occurs on the exposed surface, and the laminates undergo internal delamination due to thermal stress. With the increase in furnace temperature, the pyrolysis reaction of the material on the exposed surface intensifies until carbonization occurs, and it expands along the thickness direction. The infrared thermal imaging equipment used could not only accurately measure the temperature field of the unexposed surface of the laminates but also effectively detect the internal delamination of the laminates. The simulation results show that the established pyrolysis response model can not only effectively simulate the variation characteristics of the temperature field and the initial thermal decomposition temperature of the composite laminates under unilateral heating conditions, but also simulate the pyrolysis reaction temperature, pyrolysis density change and carbonization law of the material.
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来源期刊
International Journal of Thermal Sciences
International Journal of Thermal Sciences 工程技术-工程:机械
CiteScore
8.10
自引率
11.10%
发文量
531
审稿时长
55 days
期刊介绍: The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.
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