Inspection Method of Cracks in Concrete by Using Infrared Camera

红外热像仪检测混凝土裂缝的方法

• 批准号: 03452202
• 负责人: IDEMITSU Takashi
• 金额: $ 3.65万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03452202/
• 关键词: Infrared Camera; Inspection Method; Crack; Heat Conduction; Remote control; Reflection Method; Infrared Heater; Infrared Camera; Inspection Method; Crack; Heat Conduction; Remote control; Reflection Method; Infrared Heater

It is very immportant to establish the inspection method of cracks in concrete structure. In order to investigate the inspection method by remote control, the following study was carried out in this paper.(1) A small part of the concrete specimen was heated with an improved soldering copper and by using the infrared camera the heat conduction behavior was recorded. the position of cracks could be found by checking up the disturbance of heat distribution.(2) Infrared rays were applied to the specimen with the infrared heater and the reflected rays from the crack sueface were measured by the infrared cameta. The cracks can be seen in the heat distribution photograph, since the infrared rays do not reflect at the cracks. As the result of the tests, the small cracks 0.2mm in width could be recorded, under the condition when the distance from the infrared camera to the specimen was 6.0-10m

在混凝土结构中建立裂纹的检查方法非常不可能。为了通过遥控器调查检查方法，本文进行了以下研究。（1）混凝土标本的一小部分用改进的焊接铜加热，并使用红外摄像机记录了热传导行为。可以通过检查热分布的干扰来找到裂纹的位置。（2）红外射线使用红外加热器应用于样品，并通过红外凸轮测量了裂纹提取物的反射射线。在热分配照片中可以看到裂缝，因为红外线不会在裂缝处反射。由于测试的结果，在从红外摄像头到样品的距离为6.0-10m时，可以记录宽度0.2mm的小裂纹。