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High-frequency fatigue testing system

高频疲劳测试系统

基本信息

批准号：
424760282
负责人：
金额：
--
依托单位：
Technische Universität Dortmund
依托单位国家：
德国
项目类别：
Major Research Instrumentation
财政年份：
2019
资助国家：
德国
起止时间：
2018-12-31 至无数据
项目状态：
未结题

来源：
https://gepris.dfg.de/gepris/projekt/424760282?language=en
关键词：
frequency fatigue testing system

项目摘要

With the high-frequency fatigue testing system, the possibilities of cyclic material and component testing in the Faculty of Mechanical Engineering of the TU Dortmund University in the very high cycle fatigue (VHCF) regime are significantly extended. This systemic expansion allows characterizing metals and plastics in the VHCF regime up to a maximum force of 50 kN under various stress ratios and temperatures. The high-frequency fatigue testing system will be used in ongoing and planned research projects as well as in experimental student works and experimental laboratories to investigate fatigue behaviour at high and very high number of cycles. Due to the variability in the clamping of flat and round specimens as well as complex component-like specimens, e.g., additively manufactured cellular structures or hybrid laminates, it will enable the load- and cycle-dependent determination of cyclic deformation and damage mechanisms and thus (first) to provide comprehensive design parameters for these materials and structures in the VHCF regime. In addition, the influence of production processes, e.g., by examining components, manufactured at the Institute of Machining Technology (ISF), can be investigated with regard to their VHCF properties for feedback them to institutes of production engineering for the further development of processes. The focus lies on a better understanding of the process-structure-property relationships, which enable a property-optimized production of components, which are loaded in the VHCF regime during operation.

借助高频疲劳测试系统，多特蒙德大学机械工程学院在超高周疲劳（VHCF）制度下进行循环材料和部件测试的可能性得到了显著扩展。这种系统膨胀允许在各种应力比和温度下，在高达50 kN的最大力下表征VHCF体系中的金属和塑料。高频疲劳测试系统将用于正在进行的和计划中的研究项目，以及实验学生作品和实验室，以研究高和非常高的循环次数下的疲劳行为。由于平面和圆形试样以及复杂的组件状试样的夹持可变性，增材制造的蜂窝结构或混合层压板，它将使负载和周期依赖的循环变形和损伤机制的确定，从而（第一）提供全面的设计参数，这些材料和结构在VHCF制度。此外，生产过程的影响，例如，通过检查在机械加工技术研究所（ISF）制造的部件，可以研究它们的VHCF特性，以将它们反馈给生产工程研究所，用于进一步开发工艺。重点在于更好地理解过程-结构-性质的关系，这使得能够在操作期间加载在VHCF制度中的组件的性质优化的生产。