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Non-Destructive Testing of CFRP in the Design Process - a Generic Approach to Describe and Optimize Non-Destructive Testing

机译：设计过程中CFRP的非破坏性测试 - 一种描述和优化非破坏性测试的通用方法

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In the field of product development and production of Carbon Fiber Reinforced Plastic (CFRP) components, Non-Destructive Testing (NDT) is one of the key values. A product is build and optimized on different requirements and within a set of multiple constraints. NDT is an important process to ensure, that these requirements are satisfied and product quality is within given parameters. Testability is one design constraints as well, that has to be fulfilled or, even better, minimized. It is mandatory to take the needs of NDT into account during the design phase of a product. To do so, these requirements have to be methodically evaluated, standardized and then added to the design process as an additional degree of freedom. Therefore, all possibilities but also all limitations of NDT have to be available for a designer in a distinct and plain description. A systematical correlation between product requirements, acceptable deviation and its traceability in context of geometry, material and NDT method, has to be shown. The basis for that are a distinct description of an anomaly (deviation), the part geometry and the NDT method. Based on this mathematical language, the relation between these three entities is shown. This gives the possibility to describe arbitrary geometries with arbitrary anomalies and predict its testability with different NDT methods. This leads to an estimation of the testability of a complex part and also to an estimation of the necessary effort to accomplish the test. In the next step, there is the optimization to reduce this test effort but also to improve parts due better use of NDT possibilities. This work demonstrates how to combine the early design process with the needs of Non-Destructive Testing and Quality Management.
机译：在产品开发和生产领域的碳纤维增强塑料（CFRP）组件，无损检测（NDT）是关键值之一。在不同的要求和一组多个约束中，构建并优化产品。 NDT是确保的重要过程，满足这些要求，产品质量在给定参数内。可测试性是一种设计约束，必须满足或更好地实现，最小化。在产品的设计阶段期间，必须考虑NDT的需求是必要的。为此，必须有条理地评估这些要求，标准化，然后将其作为额外的自由度添加到设计过程中。因此，所有可能性，但也必须在不同且清晰的描述中为设计者提供所有NDT的所有限制。必须显示产品要求，可接受的偏差及其在几何形状，材料和NDT方法中的可追溯性之间的系统相关性。这是对异常（偏差），部分几何和NDT方法的不同描述。基于此数学语言，显示了这三个实体之间的关系。这使得能够描述具有任意异常的任意几何形状，并以不同的NDT方法预测其可测试性。这导致估计复杂部分的可测试性以及估计需要完成测试的必要努力。在下一步中，有优化来减少该测试工作，而且还可以提高零件，更好地利用NDT可能性。这项工作展示了如何将早期设计过程与非破坏性测试和质量管理的需求相结合。

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