文献类型：期刊文献

中文题名：基于发光量子点的金属裂纹实时监测方法

英文题名：Real-time Monitoring of Crack Propagation in Metals Based on Quantum Dots

作者：赵子铭[1];栾伟玲[1];尹少峰[1];涂善东[1]

机构：[1]华东理工大学承压系统与安全教育部重点实验室,上海200237

年份：2015

卷号：26

期号：17

起止页码：2374

中文期刊名：中国机械工程

外文期刊名：China Mechanical Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家自然科学基金资助项目(51172072;51475166);国家重点基础研究计划(973计划)资助项目(2013CB035505)

语种：中文

中文关键词：量子点;金属裂纹扩展;共聚焦显微镜;荧光强度;无损检测

外文关键词：quantum dot（QD）; metal crack propagation; confocal microscopy; fluorescence intensity; non-destructive testing

摘要：研究了基于量子点的荧光特性实时监测金属裂纹扩展的方法。标准金属试样上涂覆了添加量子点的环氧树脂膜,在试样加载拉伸过程中,出现金属裂纹的区域伴随明显亮线,光谱测试发现其荧光强度明显高于非裂纹区域。借助共聚焦显微镜可观测到裂纹宽度最小达7μm,比已知的其他无损检测方法的探测极限有了显著提高。
This paper reported the real-time monitoring method of crack propagation in metals with quantum dots.Experimental results show that the crack of epoxy resin mixing with quantum dot exhibits a bright line at crack,and its fluorescence intensity in the crack area is much higher than that of non-crack parts.With the help of confocal microscopy,the crack width can be detected as low as7μm,stating that the detection limitation is greatly improved comparing with other non-destructive testing methods.