Nondestructive debonding detection of fiber reinforced plastics strengthened concrete structure based on infrared thermal imaging with laser thermal excitation

被引：0
|
作者：
Xu Y. [1 ]
Wang Q. [1 ]
Luo C. [1 ]
Zheng Q. [1 ]
机构：
[1] Shenzhen Key Lab of Urban & Civil Engineering Disaster Prevention & Reduction, Harbin Institute of Technology (Shenzhen), Shenzhen
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 02期
关键词：
Fiber reinforced plastics (FRP); Finite element analysis; Infrared imaging(IRT); Laser excitation; Nondestructive testing;
D O I：
10.13801/j.cnki.fhclxb.20190428.001
中图分类号：
学科分类号：
摘要：
The infrared thermal imaging(IRT) detection technology is often utilized for the debonding detection of concrete reinforced by fiber reinforced plastics (FRP) sheets. However, the traditional heat source excitation IRT method is affected by factors such as short heating distance, low thermal sensitivity and high power consumption. In order to solve these problems, the debonding detection of FRP-reinforced concrete structures based on optical excitation line laser heat source IRT method was proposed. The IRT method based on optical excitation line laser heat source was proposed to detect the debonding of FRP reinforced concrete. The surface local heat distribution anomalies caused by debonding in the structure could be measured by an infrared camera. Based on the numerical and experimental results, it is proved that the method has the advantages of debonding detection in FRP-reinforced concrete structure. This method has advantages: the feasibility of using laser scanning thermal imaging technology to detect the debonding damage in FRP reinforced concrete structure; FRP reinforcement long-distance, high thermal sensitivity and low power consumption damage detection of FRP reinforced concrete structures. © 2020, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
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页码：472 / 481
页数：9
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