摘要
针对复合材料在湿-热-载荷作用下的加速老化与自然老化问题,综述了国内外纤维增强树脂基复合材料在加速老化环境(高温环境、湿热环境、湿-热-载荷耦合)和自然老化条件下的微观老化机制(化学性能、表面裂纹)、宏观力学性能(拉伸、剪切、弯曲)的变化规律,总结了耐久性预测方法的一般流程及其应用进展,提出了复合材料老化失效研究的未来发展趋势。研究结果表明:复合材料受湿-热-载荷影响,在微观性能上主要表现为基体、基体与纤维界面、纤维在物质成分或者组织形态损伤等方面的变化,在宏观上主要表现为拉伸、压缩、剪切、弯曲等力学性能的变化;复合材料老化失效预测方法主要包括选择老化性度量参量、建立耐久性预测模型(线性回归、强度中值老化方程、阿伦尼乌斯模型、人工智能模型)、确定加速老化与自然老化等效关系等环节;未来应深入研究复合材料在老化环境中的微观老化机制和宏观老化性能的内在联系、不同老化环境下老化规律的相关性和定量性分析,进一步揭示复合材料在复杂环境下的老化失效机制;在此基础上,积累各种类型复合材料的加速老化和自然老化失效试验数据,建立更为精准的加速老化与自然老化等效关系,从而实现复合材料的耐久性预测。
For the accelerated aging and natural aging of composites under wet-heat-load conditions,the change laws of micro aging mechanism(chemical properties and surface cracks)and macroscopic mechanical properties(tensile,shear,and bending)of fiber reinforced resin matrix composites in China and abroad under accelerated aging environments(high temperature environment,hygrothermal environment,and wet-heat-load coupling)and natural aging conditions were reviewed.The general process of durability prediction methods and their application progress were summarized,and the future development trends of aging failure studies of composites were pointed out.Research results show that composites are affected by wet-heat-loading,which is mainly manifested as the changes of matrix,matrix/fiber interface,fiber in terms of material composition or tissue morphology damage in microscopic properties,as well as the changes in mechanical properties such as tensile,compression,shear,and bending in macroscopic properties.The aging failure prediction methods of composites mainly involve the selection of aging metric parameters,the establishment of durability prediction models(linear regression,median strength aging equation,Arrhenius model,and artificial intelligence model),and the determination of an equivalent relationship between accelerated aging and natural aging.In the future,in-depth research should be carried out on the intrinsic connection between the microscopic aging mechanism and macroscopic aging performance of composites in aging environments and the correlation and quantitative analysis of aging laws in different aging environments,so as to further reveal the aging failure mechanism of composites in complex environments.On this basis,accelerated aging and natural aging failure test data of various types of composites can be accumulated,and a more accurate equivalent relationship between accelerated aging and natural aging can be established,so as to realize the prediction of durability of composites.11 tabs,122 refs.
作者
秦国锋
秦旺招
糜沛纹
李铭
范秋寒
QIN Guo-feng;QIN Wang-zhao;MI Pei-wen;LI Ming;FAN Qiu-han(Teachers College for Vocational and Technical Education,Guangxi Normal University,Guilin 541004,Guangxi,China;School of Vehicle and Energy,Yanshan University,Qinhuangdao 066004,Hebei,China)
出处
《交通运输工程学报》
EI
CSCD
北大核心
2024年第5期173-194,共22页
Journal of Traffic and Transportation Engineering
基金
国家自然科学基金项目(52102473)
广西科技计划项目(桂科AD22035023)。
关键词
汽车工程
汽车轻量化
纤维增强树脂基复合材料
加速老化
自然老化
老化机制
力学性能
预测模型
automobile engineering
lightweight of automobile
fiber reinforced resin matrix composite
accelerated aging
natural aging
aging mechanism
mechanical property
prediction model
