Investigation of the transferability of the fatigue behaviour of fibre-reinforced plastics from coupon samples to optimised higher-level components for the development of a design guideline

研究纤维增强塑料的疲劳行为从试样样品到优化的更高级别组件的可转移性，以制定设计指南

• 批准号: 508331526
• 负责人: Professor Dr.-Ing. Dieter Krause
• 金额: --
• 依托单位: Institut für Produktentwicklung und Konstruktionstechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/508331526?language=en
• 关键词: Investigation; transferability; fatigue; behaviour; fibre

Effective and reliable product development methods for fibre reinforced plastic composites (FRP) allow a high degree of exploitation of lightweight design potential, as safety factors can be reduced due to a better understanding of the interactions and a precise knowledge of the distribution of influencing factors. In the present research project, a method for the consideration of the fatigue behaviour of FRP in the design of high-level components is to be conceived, implemented and evaluated on two examples, which on the one hand considers the special features of optimised layer structures and on the other hand the influence of material and structural uncertainties on the fatigue behaviour. The method considers the scatter of the influencing factors and enables the product developer to create robust designs. It is based on detailed experimental investigations on different levels of the test pyramid, from which conclusions are drawn about suitable design limits for the determination of the FRP fatigue behaviour, and also quantifies occurring distributions of individual influencing parameters. Starting with coupon samples, the results are successively transferred to the semi-finished product level, considering any uncertainties that may occur. A further focus lies on the optimisation of the force introduction points. After comprehensive evaluation, the findings will be transferred to software tools, which should increase the acceptance of lightweight FKV construction methods among users. Finally, two different demonstrator concepts will be derived, manufactured and tested jointly by the two applicants based on the developed method and knowledge base. Based on these results, the method will be evaluated and further potentials will be shown.

纤维增强塑料复合材料（FRP）的有效和可靠的产品开发方法允许高度开发轻量化设计潜力，因为由于更好地理解相互作用和精确了解影响因素的分布，可以减少安全因素。在目前的研究项目中，一种在设计高级别部件时考虑FRP疲劳性能的方法将在两个实例上进行构思、实施和评估，一方面考虑优化层结构的特殊功能，另一方面考虑材料和结构不确定性对疲劳性能的影响。该方法考虑了影响因素的分散性，使产品开发人员能够创建稳健的设计。它是基于详细的实验调查不同层次的测试金字塔，从中得出的结论，适当的设计限制的FRP疲劳性能的测定，也量化发生的个别影响参数的分布。从试样样品开始，考虑到可能发生的任何不确定性，结果将连续转移到半成品水平。进一步的重点在于力引入点的优化。在综合评估之后，调查结果将被转移到软件工具中，这将增加用户对轻型FKV建造方法的接受度。最后，两个不同的演示方案将由两个申请人根据开发的方法和知识库共同推导、制造和测试。基于这些结果，该方法将进行评估，并进一步显示潜力。