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New Techniques to Detect Layers Debonding with Infrared Imaging and Ground Penetrating Radar

机译:红外成像和探地雷达探测层剥离的新技术

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An efficient and objective method of detecting the occurrence of layer debonding has been developed. Normally "Hammer inspection method" is used to detect layer debonding in airports. In this method the surface of the runway is tapped with a hammer, and the occurrence of debonding is judged from the reflected sound. However this method has the problems that it requires much time and effort, and the inspection results are subjective and depend on the person doing the inspection. Therefore we tried to develop a nondestructive inspection method using infrared light, based on the effect of layer debonding on the temperature of the pavement surface. At the same time we verified the validity of the ground penetrating radar method using electromagnetic waves that is commonly used for inspecting for cavities in pavements. As a result of trials on site at an airport, it was confirmed that inspection using infrared light has the same high accuracy as the Hammer method for debonding in shallow locations within about 10 cm of the surface. It was also confirmed that inspection by the ground penetrating radar(GPR) method is effective for detecting layer debonding in deep locations. Based on these results, a rational method of inspection for layer debonding was developed and proposed using the characteristics of both infrared thermography and GPR.
机译:已经开发了一种有效且客观的检测层剥离的发生的方法。通常,“锤检查方法”用于检测机场中的层剥离。在这种方法中,用锤子敲击跑道表面,并根据反射声判断是否发生脱胶。但是,该方法存在需要花费大量时间和精力的问题,并且检查结果是主观的并且取决于进行检查的人员。因此,我们尝试根据层剥离对路面温度的影响,开发一种使用红外光的无损检测方法。同时,我们使用电磁波验证了探地雷达方法的有效性,该方法通常用于检查人行道中的空洞。作为在机场进行的现场试验的结果,证实了使用红外光进行的检查具有与用于在距表面约10厘米以内的浅层位置剥离的锤击方法相同的高精度。还证实了,通过探地雷达(GPR)方法进行的检查对于检测深处的层脱胶是有效的。基于这些结果,开发并提出了一种利用红外热成像和GPR的特性检查层剥离的合理方法。

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