Comparison of infrared thermography, ground-penetrating radar and ultrasonic pulse echo for detecting delaminations in concrete bridges
Comparison of infrared thermography, ground-penetrating radar and ultrasonic pulse echo for detecting delaminations in concrete bridges
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DOI：
10.1016/j.conbuildmat.2019.07.320
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发表时间：
2019-11-20
影响因子：
7.4
通讯作者：
Stryk, Josef
中科院分区：
文献类型：
--
作者：
Janku, Michal;Cikrle, Petr;Stryk, Josef
建筑物，桥梁，道路和其他结构需要定期维护，如果他们是持久的。一般来说，如果早期检测到缺陷，其修复的成本通常比允许结构降解数月或数年要低得多。定位隐藏缺陷的关键手段是无损检测方法。本文描述了三种非破坏性方法的测量比较应用于混凝土桥梁和实验室样品的人工缺陷来模拟空腔。采用红外热像仪、探地雷达和超声脉冲回波三种方法测量混凝土面板中空洞的深度和尺寸。此外，测量是使用来自同一制造商的两种不同品牌的雷达和两种不同的热像仪进行的。最后，在准确性、测试实用性和成本方面比较了无损检测方法的一般性能标准。(C) 2019 Elsevier Ltd.版权所有。
Buildings, bridges, roads, and other structures need to be regularly maintained if they are to last. In general, if a defect is detected early, the cost of its remediation is typically much lower than if the structure is allowed to degrade for months or years. A key means of locating hidden defects are non-destructive testing methods. This paper describes measurements that compare three non-destructive methods applied to a concrete bridge and a laboratory specimen with artificial defects to simulate cavities. Three methods (infrared thermography, ground-penetrating radar and ultrasonic pulse echo) were used to measure the depth and size of cavities in the concrete panel. Furthermore, the measurements were made using two different brands of radar and two different thermal imaging cameras from the same manufacturer. Lastly, the NDT methods were compared across general performance criteria in terms of accuracy, testing practicality, and costs. (C) 2019 Elsevier Ltd. All rights reserved.