Due to its flexibility for use in various applications active thermography is of interest for non-destructive evaluation of defects in various materials. In particular, active thermography allows for identification of imperfections inside glue joints like delaminations, air pockets or inclusions of foreign particles. The contribution of this work is the development and validation of a small and portable device that can inspect large glue joints of fiber composites components like aircraft fuselages and wind turbine blades. The thermography device consists of a heat source and an infrared camera mounted to a mobile industrial robot system that guides the device along a trajectory above the inspection object. At the same time, images are acquired by the infrared camera and the current position of the device is monitored. The images are processed via LabVIEW to automatically detect irregularities and save the coordinates and an image of the defect in a log. This enables tracking, closer analysis and eventual repairs. Compared to previous thermography procedures this method allows downsizing of the heat source and flexible adjustments to the size and contour of the test component. As a result, it is possible to reduce testing times and divide the complete surface into small areas which allows detection of sub-millimeter defects during the manufacturing process and for example inspection of wind turbines already in operation. Therefore, this device is a powerful tool for quality management in the industry 4.0.

中文翻译：

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一种用于通过主动热成像检测胶接点的机器人化无损质量设备

由于其在各种应用中使用的灵活性，主动热成像对于各种材料中的缺陷的非破坏性评估很受关注。特别是，主动热成像允许识别胶接缝内的缺陷，如分层、气穴或异物夹杂物。这项工作的贡献是开发和验证了一种小型便携式设备，该设备可以检查飞机机身和风力涡轮机叶片等纤维复合材料部件的大胶接缝。热成像设备由一个热源和一个安装在移动工业机器人系统上的红外摄像头组成，该系统引导设备沿着检测对象上方的轨迹移动。同时通过红外摄像头采集图像，监控设备当前位置。图像通过LabVIEW进行处理以自动检测不规则性并将坐标和缺陷图像保存在日志中。这使得跟踪、更密切的分析和最终修复成为可能。与以前的热成像程序相比，这种方法允许缩小热源的尺寸并灵活调整测试部件的尺寸和轮廓。因此，可以减少测试时间并将整个表面划分为小区域，从而允许在制造过程中检测亚毫米缺陷，例如检查已经运行的风力涡轮机。因此，该设备是工业4.0质量管理的有力工具。仔细分析并最终修复。与以前的热成像程序相比，这种方法允许缩小热源的尺寸并灵活调整测试部件的尺寸和轮廓。因此，可以减少测试时间并将整个表面划分为小区域，从而允许在制造过程中检测亚毫米缺陷，例如检查已经运行的风力涡轮机。因此，该设备是工业4.0质量管理的有力工具。仔细分析并最终修复。与以前的热成像程序相比，这种方法允许缩小热源的尺寸并灵活调整测试部件的尺寸和轮廓。因此，可以减少测试时间并将整个表面划分为小区域，从而允许在制造过程中检测亚毫米缺陷，例如检查已经运行的风力涡轮机。因此，该设备是工业4.0质量管理的有力工具。可以减少测试时间并将整个表面分成小区域，从而可以在制造过程中检测亚毫米缺陷，例如检查已经运行的风力涡轮机。因此，该设备是工业4.0质量管理的有力工具。可以减少测试时间并将整个表面分成小区域，从而可以在制造过程中检测亚毫米缺陷，例如检查已经运行的风力涡轮机。因此，该设备是工业4.0质量管理的有力工具。