Manufacture by forming and characterization of actuator profiles based on Shape-Memory-Alloys

基于形状记忆合金的执行器轮廓的成型和表征制造

• 批准号: 239663515
• 负责人: Professor Dr.-Ing. A. Erman Tekkaya
• 金额: --
• 依托单位: Institut für Umformtechnik und Leichtbau (IUL)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/239663515?language=en
• 关键词: Manufacture; forming; characterization; actuator; profiles; Manufacture; forming; characterization; actuator; profiles

Composite extrusion with modified porthole dies is a suitable manufacturing process for unidirectionally reinforced metal matrix composites. During the extrusion process, specific reinforcing elements in the form of wires or ribbons are fed into the welding chamber of the die. Previous investigations regarding the embedding of reinforcing elements and also of functional elements by means of the composite extrusion process have been performed within SFB / TR 10. In order to expand the innovative potential of composite materials, so called shape-memory-alloys should be integrated into structural profiles. By means of a thermally induced reaction of the shape memory elements integrated in the profile, an active actuator function of the structure can be achieved. A reversible function by means of a two-way-shape-memory-effect can be achieved due to a thermomechanical treatment subsequently to the profile production. For the production of actuators with graded properties, the thermomechanical treatment is to be carried out over the entire profile length as well as locally. In this regard, the deformation limits of the composite material are determined. The profiles produced are to be tested by materials science investigations regarding their mechanical properties, the damage behaviour and the functionality of the actuator in order to determine and deepen the understanding of the material in the field of shape-memory-alloy-metal-matrix-composites (SMA-MMC).In the first phase of the project, the developed actuator concept was validated and the potential for increased mechanical properties was demonstrated. In the second phase of the project, the focus is on the numerical simulation of the actuator behaviour. The gained knowledge is then to be used for the design of actuators and profiles with improved mechanical properties.

带有改良舷窗模具的复合挤出是单向增强金属基质复合材料的合适制造过程。在挤出过程中，将电线或丝带形式形式的特定加固元素送入模具的焊接室。先前在SFB / TR 10中进行了有关通过复合挤出过程嵌入增强元件以及功能元件的研究。为了扩大复合材料的创新潜力，应将所谓的形状 - 内存合金的创新潜力整合到结构曲线中。通过集成在轮廓中的形状记忆元件的热诱导反应，可以实现结构的主动执行器函数。由于剖面生产的热力学处理，可以通过双向内存效应的可逆函数来实现。对于具有分级特性的执行器的生产，将在整个轮廓长度和本地进行热机械处理。在这方面，确定复合材料的变形极限。生产的概况应通过材料科学研究对其机械性能，损伤行为和致命器的功能进行测试，以确定和加深对形状 - 内洛伊 - 金属 - 金属 - 金属材料（SMA-MMC）材料领域中材料的理解。在项目的第一阶段中，开发的Actuator概念是有效的。在项目的第二阶段中，重点放在执行器行为的数值模拟上。然后，获得的知识将用于执行器的设计和具有改善的机械性能的轮廓。