Energy-efficient manufacturing and mechanism-based characterization of the corrosion fatigue behavior of laser-structured hybrid composites

激光结构混合复合材料的节能制造和基于机理的腐蚀疲劳行为表征

• 批准号: 426499947
• 负责人: Dr. Jan Haubrich
• 金额: --
• 依托单位: Lehrstuhl für Leichtbau im Automobil (LiA)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/426499947?language=en
• 关键词: Energy; efficient; manufacturing; mechanism; based

The aim of the research project by addressing the mobility sector is the development and characterization of intrinsic bonded and corrosion-resistant CFRP/Al 6082-hybrid composites for the application in higher loaded car body parts. Modern cars are multimaterial designs nowadays, although the manufacturing of hybrid composites requires a lot of mostly manual work steps and high standards concerning methodology, autoclave processing and prevention of contamination during processing, resulting in high costs. Furthermore, internal stresses in the structural element and the electrochemical isolation of the individual components to avoid contact corrosion between carbon fibers and metal (e.g. CARALL) must be considered. In the research project, besides this applicationoriented efficiency enhancement through lightweight construction, the manufacturing process of the hybrid components as well as thecharacterization will be designed energy-efficiently. Therefore, the intrinsic material bond between fiber-reinforced plastic and metallic components as well as forming of the final structural element will be realized in one work step, to reduce needed process steps and time. Concerning fatigue and corrosion behavior, the effectiveness of laser structuring of the metallic joining surfaces will be investigated over instrumented corrosion fatigue tests. With the help of mechanismbased characterization of the deformation behavior, basic knowledge about aging and damage processes will be build up. On the basis of cooperative pre-work the combination of the alloy Al 6082-T6 with carbon fibers (fiber type: SGL C30 T050 342 EPY) and epoxy resin E201 (SGL Group) was chosen as model system. The project structure implicates the expertise and research of the three Project partners concerning manufacturing of hybrid composites (LiA), joining processes and interface analysis (DLR) as well as measurement and test methodology with regard to the corrosion fatigue behavior (WPT). The aim of the project can only be realized by the interdisciplinary exchange of results and data.

该研究项目的目的是解决机动性领域的问题，开发和表征内在结合和耐腐蚀的CFRP/Al 6082混合复合材料，用于更高载荷的车身部件。现代汽车现在是多材料设计，尽管混合复合材料的制造需要大量主要是手工的工作步骤和关于方法、高压釜处理和处理期间防止污染的高标准，导致高成本。此外，必须考虑结构元件中的内部应力和各个部件的电化学隔离，以避免碳纤维和金属（例如CARALL）之间的接触腐蚀。在该研究项目中，除了通过轻量化结构提高应用效率外，混合动力部件的制造过程以及特性将以节能方式设计。因此，纤维增强塑料和金属部件之间的固有材料结合以及最终结构元件的形成将在一个工作步骤中实现，以减少所需的工艺步骤和时间。关于疲劳和腐蚀行为，金属连接表面的激光结构化的有效性将通过仪器化腐蚀疲劳试验进行研究。借助基于力学的变形行为表征，将建立有关老化和损伤过程的基本知识。在前期协同工作的基础上，选择铝合金6082-T6与碳纤维（纤维类型：SGL C30 T050 342 EPY）和环氧树脂E201（SGL Group）的组合作为模型系统。该项目结构涉及三个项目合作伙伴的专业知识和研究，涉及混合复合材料（LiA）的制造，连接工艺和界面分析（DLR）以及腐蚀疲劳行为（WPT）的测量和测试方法。该项目的目标只能通过跨学科的成果和数据交流来实现。