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Non-Destructive Thermography Analysis of Impact Damage on Large-Scale CFRP Automotive Parts

机译:大型CFRP汽车零件冲击损伤的无损热成像分析

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摘要

Laminated composites are increasingly used in aeronautics and the wind energy industry, as well as in the automotive industry. In these applications, the construction and processing need to fulfill the highest requirements regarding weight and mechanical properties. Environmental issues, like fuel consumption and CO2-footprint, set new challenges in producing lightweight parts that meet the highly monitored standards for these branches. In the automotive industry, one main aspect of construction is the impact behavior of structural parts. To verify the quality of parts made from composite materials with little effort, cost and time, non-destructive test methods are increasingly used. A highly recommended non-destructive testing method is thermography analysis. In this work, a prototype for a car’s base plate was produced by using vacuum infusion. For research work, testing specimens were produced with the same multi-layer build up as the prototypes. These specimens were charged with defined loads in impact tests to simulate the effect of stone chips. Afterwards, the impacted specimens were investigated with thermography analysis. The research results in that work will help to understand the possible fields of application and the usage of thermography analysis as the first quick and economic failure detection method for automotive parts.
机译:层压复合材料越来越多地用于航空,风能行业以及汽车行业。在这些应用中,构造和加工需要满足有关重量和机械性能的最高要求。诸如油耗和二氧化碳排放量之类的环境问题,在生产满足这些分支机构严格监控标准的轻质零件方面提出了新的挑战。在汽车工业中,建筑的一个主要方面是结构零件的冲击性能。为了用很少的努力,成本和时间来验证由复合材料制成的零件的质量,越来越多地使用无损检测方法。高度推荐的非破坏性测试方法是热成像分析。在这项工作中,使用真空灌注技术生产了汽车底板的原型。为了进行研究,生产了与原型具有相同多层结构的测试样品。这些样品在冲击试验中承受规定的载荷,以模拟碎石的影响。之后,用热像分析法分析了受影响的标本。这项工作的研究结果将有助于了解可能的应用领域和热成像分析作为汽车零件的第一种快速经济的故障检测方法。

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