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首页> 外文会议>Fourth International Conference on Repair, Rehabilitation, and Maintenance of Concrete Structures, and Innovations in Design and Construction Seoul, Korea, September 2000 >Detection of Interfacial Flaws between Steel Plates and Concrete Members Using Thermographic Technique
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Detection of Interfacial Flaws between Steel Plates and Concrete Members Using Thermographic Technique

机译：利用热成像技术检测钢板与混凝土构件之间的界面缺陷

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摘要

This paper describes a nondestructive method to evaluate two-dimensional size and depth of interfacial flaws between concrete members and the enclosing steel plate by the infrared thermographic technique. In this procedure, in order to investigate the influence of a defect in a thermography, liquid nitrogen was used to cool the surface of the steel plate. Its thermal distribution was measured. From these measurements, it was possible to estimate the diameter of circular defects from the calculated inflection points in the thermal distribution curve. The process to evaluate the depth of the flaws by using the relation between the volume of the flaws and proposed thermal parameters is also presented.
机译：本文介绍了一种通过红外热成像技术评估混凝土构件与封闭钢板之间的二维缺陷的二维尺寸和深度的无损方法。在该过程中，为了研究热成像中缺陷的影响，使用液氮来冷却钢板表面。测量其热分布。通过这些测量，可以从热分布曲线中计算出的拐点估算出圆形缺陷的直径。还提出了利用缺陷体积与拟议的热学参数之间的关系评估缺陷深度的过程。

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