Branched natural fibrous composites for improved technical components

用于改进技术组件的支化天然纤维复合材料

• 批准号: 128716029
• 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: Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/128716029?language=en
• 关键词: Branched; natural; fibrous; composites; improved

The major goal of this project is the development of structurally optimized, branched fibrous compound structures for technical use as lightweight construction elements with a high load-bearing capacity inspired by hierarchically organized, branched plant structures. The biological role models for these elements are the ramifications of selected plant species with a pronounced fibre-matrix-structure, optimised in the course of biological evolution under various kinds of static and dynamic loads. It could be shown in the project phases 1 and 2 that stem-branch attachments in Dragon trees (Dracaena spp.) and different Freycinetia-species (both arborescent monocotyledons) and branched columnar cacti possess a high potential for transfer into technical adaptation. Further analysis of the hierarchical composition at the branching regions (structuring and multiscale mechanics of branching regions on various hierarchical levels, arrangement and orientation of fibre-/wood-bundles and fibres, internal structure of the wood fibres) and evaluation of the mechanical significance of the specific arrangement of fibre-/wood-bundles and fibres by means of modern state-of-the-art material testing and simulation techniques, allowed to adjust and modify the customised manufacturing processes developed in phase 1 and 2, and to further develop the manufacture of innovative fibrous compound structures inspired by biological models.

该项目的主要目标是开发结构优化的支化纤维复合结构，其技术用途是作为具有高承载能力的轻质建筑元件，其灵感来自分层组织的支化植物结构。这些元素的生物角色模型是具有明显纤维基质结构的选定植物物种的分支，在各种静态和动态负载下的生物进化过程中得到优化。项目第一阶段和第二阶段可以表明，龙血树（Dracaena spp.）和不同的Freycinetia物种（均为树状单子叶植物）和分枝柱状仙人掌的茎枝附着物具有转化为技术适应的巨大潜力。进一步分析分支区域的层次组成（不同层次上分支区域的结构和多尺度力学、纤维/木束和纤维的排列和方向、木纤维的内部结构）并评估分支区域的力学意义通过现代最先进的材料测试和模拟技术对纤维/木束和纤维进行具体排列，允许调整和修改第一阶段和第二阶段开发的定制制造工艺，并进一步开发生产受生物模型启发的创新纤维复合结构。