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性能及其微观结构、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，在实验室中很难再现构件在真实的条件下存在的复杂应力状态。多轴应力条件出现在各种应用领域中，例如在医疗技术中（例如，髋关节假体）、能量技术（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。这一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理解。因此，部件没有得到最佳设计，并且必须应用高安全系数。因此，在许多应用领域中，目前无法实现更可持续和资源高效的组件设计以及一致的轻量化结构。拟议的测试装置将弥补这一差距，并将加强研究活动。申请的大型研究设备将能够在静态和动态循环载荷下对试样和部件进行多轴测试，力高达10 kN，扭矩高达100 Nm。集成的热成像摄像机能够检测材料的初始损坏，并可以进行自适应频率控制，从而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，将电动动态试验机连接到材料开发的连续、可追溯的过程链，可以实现连续、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，可以将工艺数据、配方和材料属性联系起来，并使用数字方法识别复杂的关系。这考虑到了目前材料配方日益复杂的趋势（例如，使用回收和生物基材料）、新的制造技术、更短的开发周期和更长的产品寿命。