A novel way of real-time crack monitoring based on quantum dots

被引：5
|
作者：
Yao, Zihao [1 ]
Yin, Shaofeng [1 ]
Luan, Weiling [1 ]
Zhong, Qixin [1 ]
Zhang, Shaofu [1 ]
机构：
[1] East China Univ Sci & Technol, Key Lab Pressure Syst & Safety MOE, Sch Mech & Power Engn, Shanghai 200237, Peoples R China
来源：
8TH INTERNATIONAL CONFERENCE ON APPLIED ENERGY (ICAE2016) | 2017年 / 105卷
关键词：
quantum dots; crack detection; real-time monitoring; photoluminescence; OPTICAL-RESPONSE; NANOCRYSTALS;
D O I：
10.1016/j.egypro.2017.03.1023
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Recent discoveries have found that pressure dependence in quantum dots (QDs) doped in epoxy resin will have an obvious influence on the intensity of its photoluminescence (PL). Therefore, it is possible for us to monitor cracks due to the concentration of stress near the cracks when the force is loaded and the residual stress alongside the cracks after the force is unloaded. The measurement of the crack length has a wide range which can vary from dozens of microns to several centimetres. Further experiments were carried out to validate that it is the combination of both the abrupt change of stress in substrate and the interaction between the matrix and QDs that realizes the PL enhancement region near the cracks. (C) 2017 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：5061 / 5066
页数：6
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