Automated non-destructive evaluation of composites and additive manufacturing

复合材料和增材制造的自动化无损评估

• 批准号: 2597260
• 金额: --
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2597260
• 关键词: Automated; non; destructive; evaluation; composites

Aeroplane wing and fuselage panels, with a span of several meters long, are subjected to cyclic loads during take-off, landing, and taxiing. These components which are majorly manufactured from Carbon Fiber Reinforces Polymer (CFRP) composites are subjected to fatigue cracking and impact damages causing matrix cracking, ply delamination, fiber rapture, and indentations due to the loading conditions during the service or manufacturing faults.Accordingly, the components should be inspected I) at the point of manufacturing for any fabrication flaws to be rectified before entering the service, and II) periodically during the service using Non-Destructive Testing (NDT) methods to ensure their safe operation during their expected service life. Traditionally, an inspector with handheld Eddy currents/ultrasonic testing probes scans the surface of such components inch by inch for potential defects that may have been developed during the service. The inspection by the manual Eddy currents/ultrasound scanning method is a very time-consuming process, which can sometimes last for days. Furthermore, the inspection results could be adversely impacted by the tiredness of the inspector, time of the day, and the working environment. To alleviate these problems which could introduce variation in the test results or even lead to missing defect indications, which could have disastrous consequences, newer automated inspection methods are desired by the aerospace companies and airlines.The project initially targets the assessment of the efficiency of different electromagnetic NDT methods alongside ultrasonic testing for inspection of composite materials, and then, it aims at automation of the Eddy currents/ultrasound inspection process with the help of industrial robots. To this end, firstly, the inspection path should be programmed for the robot controller, so the robot manipulates the eddy currents/ultrasound sensor on a flat surface along the desired inspection path. Secondly, the robot should be interfaced with the Eddy currents/ultrasound controller to communicate effectively during the acquisition process, and this is to ensure that the inspection data collected is tagged with the correct positional data from the robot controller. This is essential for locating the defects when the inspection results are reviewed.The students during this multidisciplinary project will simulate, design, and build electromagnetic/ultrasonic sensors, integrate them in automated system, and evaluate the performance of each inspection system for aeroplane composite wing panels

飞机机翼和机身壁板跨度长达几米，在起飞、着陆和滑行过程中承受循环载荷。这些部件主要由碳纤维增强聚合物（CFRP）复合材料制成，在使用过程中或制造故障时，这些部件会受到疲劳裂纹和冲击损伤，导致基体开裂、层板分层、纤维断裂和压痕。因此，部件应在I）制造时进行检查，以确定是否存在任何制造缺陷，并在投入使用前进行纠正，以及II）在服务期间定期使用非破坏性测试（NDT）方法，以确保其在预期使用寿命期间的安全操作。传统上，检查员使用手持式涡流/超声波检测探头逐英寸扫描这些部件的表面，以检查在维修过程中可能出现的潜在缺陷。通过手动涡流/超声波扫描方法进行检查是一个非常耗时的过程，有时可能持续数天。此外，检查结果可能会受到检查员的疲劳、一天中的时间和工作环境的不利影响。这些问题可能会导致测试结果的变化，甚至导致缺陷指示的缺失，这可能会产生灾难性的后果，为了缓解这些问题，航空航天公司和航空公司需要更新的自动化检测方法。该项目最初的目标是评估不同的电磁无损检测方法和超声波检测方法在复合材料检测中的效率，然后，其目的是在工业机器人的帮助下实现涡流/超声波检测过程的自动化。为此，首先，应该为机器人控制器编程检测路径，以便机器人沿着期望的检测路径在平坦表面上操纵涡流/超声传感器。其次，机器人应该与涡流/超声控制器接口，以便在采集过程中有效地通信，这是为了确保所收集的检查数据被标记有来自机器人控制器的正确位置数据。在这个多学科项目中，学生将模拟、设计和建造电磁/超声传感器，将它们集成到自动化系统中，并评估飞机复合材料机翼壁板每个检测系统的性能