Electrodynamic Linear torsion testing machine

电动直线扭转试验机

• 批准号: 524805243
• 金额: --
• 依托单位: Universität Bayreuth
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2023
• 资助国家: 德国
• 起止时间: 2022-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/524805243?language=en
• 关键词: Electrodynamic; Linear; torsion; testing; machine

The fatigue behavior of a material is generally composed of the material properties and its microstructure, the manufacturing parameters, and the applied loading conditions. Dynamic stresses are often the cause of component failure. However, it is difficult to reproduce the complex stress state that exists under real conditions on the component in the laboratory. Multi-axial stress conditions occur in various application areas, for example in medical technology (e.g., hip prostheses), energy technology (e.g,. wind turbine blades), aviation (e.g., empennage) and the sports industry (e.g., running shoes) Due to a lack of testing technology, uniaxial loading conditions are often investigated and the behavior under multi-axial loading is derived from this. This procedure is usually based on highly simplified assumptions that rarely correspond to reality. In addition to the actual testing technique, there is also a lack of understanding of the damage processes that occur under multi-axial loading and the corresponding material modeling. As a result, components are not optimally designed, and high safety factors must be applied. A more sustainable and resource-efficient component design as well as consistent lightweight construction can thus currently not be implemented in numerous application areas. This gap is to be closed by the proposed testing device and it will enhance the research activities. The large-scale research equipment applied for will enable multi-axial testing of specimens and components under static and dynamic cyclic loading with forces of up to 10 kN and torsional moments of up to 100 Nm. The integrated thermographic camera enables the detection of initial material damage as well as the possibility of adaptive frequency control to expand the scientific interpretation possibilities and ensure more efficient and faster material testing. In addition, the connection of the electrical dynamic testing machine to a continuous, traceable process chain of material development enables continuous, standardized data access. This creates new (research) opportunities for faster and higher-quality evaluation of new materials and processes. For example, process data, formulations and material properties can be linked, and complex relationships identified using digital methods. This takes into account the current trends towards increasingly complex material formulations (e.g., the use of recycled and bio-based materials), new manufacturing technologies, ever shorter development cycles and longer product lifetimes.

材料的疲劳行为通常由材料特性及其微观结构、制造参数和施加的载荷条件组成。动态应力通常是部件失效的原因。然而，在实验室中很难重现真实条件下部件上存在的复杂应力状态。多轴应力条件出现在各种应用领域，例如医疗技术（例如髋关节假肢）、能源技术（例如风力涡轮机叶片）、航空（例如尾翼）和体育产业（例如跑鞋）由于缺乏测试技术，通常研究单轴加载条件，并由此推导出多轴加载下的行为。该过程通常基于高度简化的假设，很少符合现实。除了实际的测试技术之外，还缺乏对多轴载荷下发生的损伤过程和相应的材料建模的了解。因此，组件的设计不是最佳的，并且必须采用高安全系数。因此，目前无法在许多应用领域实施更具可持续性和资源效率的组件设计以及一致的轻质结构。这一差距将通过拟议的测试设备来弥补，并将加强研究活动。所申请的大型研究设备将能够在静态和动态循环载荷下对样本和部件进行多轴测试，力高达10 kN，扭矩高达100 Nm。集成热成像相机能够检测初始材料损坏以及自适应频率控制的可能性，以扩大科学解释的可能性并确保更高效、更快速的材料测试。此外，电气动态测试机与连续、可追溯的材料开发流程链的连接可实现连续、标准化的数据访问。这为更快、更高质量地评估新材料和工艺创造了新的（研究）机会。例如，可以链接过程数据、配方和材料属性，并使用数字方法识别复杂的关系。这考虑到了当前材料配方日益复杂（例如，使用回收材料和生物基材料）、新制造技术、更短的开发周期和更长的产品寿命的趋势。