T800复合材料层压板损伤引入技术研究  

Study on Damage Introducing Technology for T800 Composite Laminates

作　　者：符景皓 FU Jinghao(Queen Mary University of London Engineering School,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学伦敦玛丽女王工程学院,西安710072

出　　处：《强度与环境》2024年第2期32-41,共10页Structure & Environment Engineering

基　　金：国家自然科学基金(52235003)。

摘　　要：本文针对国产T800级碳纤维增强复合材料开展多次低速冲击损伤与准静态压痕损伤及最终剩余强度对比研究,以提出一种高效的复合材料损伤引入方式。首先开展多次冲击及静压痕损伤引入试验,在达到目标凹坑深度时,通过目视观测及超声C扫分析不同损伤引入方式产生损伤的机理及损伤模式;其次,对达到目标凹坑深度的试验件进行压缩剩余强度测试,分析不同损伤引入方式、不同凹坑深度、不同损伤面积与剩余强度之间的关系;通过DIC(Digital Image Correlation)、声发射系统监测对剩余强度试验过程进行监测,确定不同损伤引入方式的试验件在压缩中的损伤演化过程及机理。通过以上研究,最终确定一种高效的损伤引入方式。This article conducts comparative studies on multiple low-velocity impact damage,quasi-static indentation damage,and final residual strength of T800 carbon fiber reinforced composite materials,in order to propose an efficient method for introducing damage to composite materials.Firstly,the damage was introduced by multiple impact,and static indentation damage introduction tests.When reaching the target pit depth,the mechanism and mode of damage caused by different damage introd ucing methods were analyzed through visual observation and ultrasonic C-scan analysis.Secondly,compressive residual strength testing was conducted on the specimen that had reached the target pit depth.Then the relationship between different damage introduction methods,different pit depths,different damage areas,and residual strength was analyzed.The residual strength testing process was monitored through DIC and acoustic emission systems to determine the damage evolution process and mechanism of specimens with different damage introducing methods during compression.Through the above research,and efficient damage introducing method has been obtained.

关 键 词：T800复合材料 低速冲击 准静态压痕 剩余强度 DIC 声发射 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程]