中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2015年
17期
2374-2377
,共4页
赵子铭%栾伟玲%尹少峰%涂善东
趙子銘%欒偉玲%尹少峰%塗善東
조자명%란위령%윤소봉%도선동
量子点%金属裂纹扩展%共聚焦显微镜%荧光强度%无损检测
量子點%金屬裂紋擴展%共聚焦顯微鏡%熒光彊度%無損檢測
양자점%금속렬문확전%공취초현미경%형광강도%무손검측
quantum dot(QD)%metal crack propagation%confocal microscopy%fluorescence inten-sity%non-destructive testing
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。
研究瞭基于量子點的熒光特性實時鑑測金屬裂紋擴展的方法。標準金屬試樣上塗覆瞭添加量子點的環氧樹脂膜,在試樣加載拉伸過程中,齣現金屬裂紋的區域伴隨明顯亮線,光譜測試髮現其熒光彊度明顯高于非裂紋區域。藉助共聚焦顯微鏡可觀測到裂紋寬度最小達7μm,比已知的其他無損檢測方法的探測極限有瞭顯著提高。
연구료기우양자점적형광특성실시감측금속렬문확전적방법。표준금속시양상도복료첨가양자점적배양수지막,재시양가재랍신과정중,출현금속렬문적구역반수명현량선,광보측시발현기형광강도명현고우비렬문구역。차조공취초현미경가관측도렬문관도최소체7μm,비이지적기타무손검측방법적탐측겁한유료현저제고。
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 as 7 μm,stating that the detection limitation is greatly improved comparing with other non-destructive testing methods.
