D1: Characterization and modelling of the thermomechanical material behavior of 3D textilereinforced aluminium matrix composites (3D DF/Al-MMC)

D1：3D 织物增强铝基复合材料 (3D DF/Al-MMC) 热机械材料行为的表征和建模

• 批准号: 57157254
• 负责人: Professor Dr.-Ing. Werner Hufenbach
• 金额: --
• 依托单位: Institut für Leichtbau und Kunststofftechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/57157254?language=en
• 关键词: D1; Characterization; modelling; thermomechanical; material

In order to exploit the lightweight potential of 3D textile-reinforced carbon-fibre aluminium composites (3D CF/Al-MMC) for thermomechanical loadings, both robust manufacturing technologies and reliable methods for structural and failure analyses are requested. Goal of the project is the development of a modified gas pressure infiltration (mGPI) technology suitable for prototype and small-batch production as a complement to die-casting technology for large-batch production. For a novel mGPI unit, a refined process control, enabling reduced temperature exposures, adapted fibre preform preheating and higher cooling rates, is developed to ensure a reproducible high-quality manufacture of CF/Al-MMC on the basis of specially coated textile preforms (non-crimp knitted fabrics) and modified Alalloys. For a future structural analysis and proof of strength of CF/Al-MMC lightweight components, the development and experimental validation of material and structural models as well as failure criteria on a mesoscopic and macroscopic scale, taking into account the heterogeneous and anisotropic material characteristic, are aimed at. Material properties and model parameters required for the material and failure models are determined in single and multi-axial stress experiments using in-situ tomography on planar and tubular specimens at different temperatures.

为了开发3D织物增强碳纤维铝复合材料（3D CF/Al-MMC）的轻量化潜力，需要稳健的制造技术和可靠的结构和失效分析方法。该项目的目标是开发适合原型和小批量生产的改良气体压力渗透（mGPI）技术，作为大批量生产压铸技术的补充。对于一个新的mGPI单元，一个完善的过程控制，使降低温度暴露，适应纤维预成型件预热和更高的冷却速率，开发，以确保可重复的高品质的CF/铝MMC的生产的基础上，特殊涂层的纺织品预成型件（非卷曲针织面料）和改性铝合金。为了将来的结构分析和CF/Al-MMC轻质部件的强度证明，材料和结构模型的开发和实验验证以及在细观和宏观尺度上的失效准则，考虑到非均质和各向异性材料的特性，旨在。材料和故障模型所需的材料特性和模型参数确定在单轴和多轴应力实验中使用在不同温度下的平面和管状试样上的原位层析成像。