thermomechanical material testing machine

材料热机械试验机

• 批准号: 468811222
• 金额: --
• 依托单位: Rheinisch-Westfälische Technische Hochschule Aachen
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2022
• 资助国家: 德国
• 起止时间: 2021-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/468811222?language=en
• 关键词: thermomechanical; material; testing; machine

The main focus of the Institute for Material Applications in Mechanical Engineering (IWM) is the research of the relationships between the manufacturing process, the material microstructure and the macroscopically measurable manufacturing and usage properties of materials, material composites and components. A main focus of interest is powder based primary forming processes, in particular innovative processes of additive manufacturing technology, as well as the heat treatment of metallic materials. In terms of properties, the IWM is particularly concerned with material fatigue at ambient and high temperatures and with fracture mechanics. The IWM has built up special competence with the multi-scale, numerical simulation of processes and failure sequences. It has proven to be particularly advantageous that the model parameters for the deformation and damage models developed or used can largely be determined experimentally in our own laboratory and that the simulation results can be verified experimentally.The device applied for is best classified as a thermomechanical material testing machine. The principle of combining a hydraulic material testing machine with direct heating of the sample by conducting electricity through it is unique and known simply as "Gleeble" in professional circles. This enables simultaneous, independent and precise control of temperature and mechanical parameters such as mechanical stress or strain. The resistive heating enables very high heating rates (up to 10,000 K/s) with a very homogeneous temperature distribution over the cross section. With hollow specimens cooled from the inside, high cooling rates are also possible. Measurements into the molten state are possible. Together, they give the device enormous flexibility.The device applied for would fill an important gap and enable thermomechanical material characterization in areas that were previously not possible to reach, but need to be covered for future research questions. With extremely high heating and cooling rates while ensuring a homogeneous temperature distribution, processes such as inductive hardening, grinding and welding as well as some additive manufacturing processes can be simulated and mechanical parameters can be determined. The device applied for will be used both for the determination of basic mechanical parameters for simulations and for the experimental verification of the results of the simulations. The ICME methodology is used to develop digital twins and digital shadows for processes, materials and components. As a result, the entire process chain is described virtually and the material and component properties are determined in great detail (digital twin). For additive manufacturing of metals, we hope to gain extensive knowledge about microstructure formation and damage mechanisms during the process.

机械工程材料应用研究所（IWM）的主要重点是对制造过程，材料微观结构与宏观可测量的制造和使用材料，材料复合材料和组件的使用属性之间的关系的研究。感兴趣的主要重点是基于粉末的主要成型过程，特别是添加剂制造技术的创新过程，以及金属材料的热处理。在性质方面，IWM特别关注环境和高温以及断裂力学的材料疲劳。 IWM通过对过程和故障序列的多尺度，数值模拟进行了特殊能力。事实证明，在我们自己的实验室中可以通过实验确定变形和损坏模型的模型参数，并且可以通过实验验证模拟结果。该设备最佳地分类为热力学材料测试机。通过通过它进行电力将液压材料测试机与样品直接加热相结合的原理是独特的，在专业圈子中仅被称为“ gleble”。这可以同时对温度和机械参数（例如机械应力或应变）的同时，独立和精确控制。电阻加热使得非常高的加热速率（高达10,000 k/s）在横截面上具有非常均匀的温度分布。由于从内部冷却的空心样品，也可以进行高冷却速率。可以进入熔融状态的测量。它们共同使设备具有巨大的灵活性。应用的设备将填补一个重要的空白，并在以前无法触及但需要覆盖以后的研究问题的区域中实现热力学材料表征。通过极高的加热和冷却速率，可以在确保温度分布的同时，可以模拟电感硬化，研磨和焊接以及某些添加剂制造过程之类的过程，并可以确定机械参数。应用的设备将既用于确定模拟的基本机械参数，也将用于对模拟结果的实验​​验证。 ICME方法用于开发用于过程，材料和组件的数字双胞胎和数字阴影。结果，实际上描述了整个过程链，并详细确定了材料和组件属性（数字双胞胎）。对于金属的增材制造，我们希望能在此过程中获得有关微结构形成和损害机制的广泛知识。