Development of a new method for manufacturing hollow fibre-reinforced plastic structures for aeronautical applications using structural CFRP cores

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Plastics, Rubber and Composites Pub Date : 2022-09-04 DOI:10.1080/14658011.2022.2117120

Thomas Rief, Nicole Motsch-Eichmann, D. May, J. Hausmann

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引用次数: 0

Abstract

ABSTRACT Currently applied manufacturing technologies for hollow composite structures impose design restrictions, such as limited integration potential, whereas differential designs are limited regarding lightweight design and load transfer due to the need of joints. This paper introduces the patented concept of structural carbon fibre-reinforced polymer (CFRP) cores, intending to overcome limitations allowing for integral, yet complex designs. The hollow cores are initially manufactured and partially cured via resin transfer moulding (RTM) with inflatable rubber core. These cores are then integrated in a dry textile-based preform which is impregnated in another RTM process. Here, the cores stabilize the preform during injection and afterwards remain in the component as load-carrying elements. Thereby the partial degree of cure of the cores before the second RTM process is optmised to balance dimensional stability and bonding strength. The process route using structural CFRP cores was successfully applied to a generic structure and proven by structural testing.

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开发了一种利用CFRP结构芯制造航空用中空纤维增强塑料结构的新方法

摘要:目前应用的中空复合材料结构制造技术存在设计限制，例如集成潜力有限，而差分设计由于需要连接而在轻量化设计和载荷传递方面受到限制。本文介绍了结构碳纤维增强聚合物(CFRP)核心的专利概念，旨在克服限制，允许整体，但复杂的设计。空心芯最初是通过树脂转移模塑(RTM)与充气橡胶芯进行部分固化的。然后将这些芯集成在干燥的基于纺织品的预制件中，该预制件浸渍在另一种RTM工艺中。在这里，芯在注入过程中稳定预成型，然后作为承载元件留在组件中。因此，优化了第二次RTM工艺前芯的局部固化程度，以平衡尺寸稳定性和结合强度。采用CFRP结构芯的工艺路线成功地应用于一个通用结构，并通过结构测试得到了验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plastics, Rubber and Composites 工程技术-材料科学：复合

CiteScore

4.10

自引率

0.00%

发文量

审稿时长

4 months

期刊介绍： Plastics, Rubber and Composites: Macromolecular Engineering provides an international forum for the publication of original, peer-reviewed research on the macromolecular engineering of polymeric and related materials and polymer matrix composites. Modern polymer processing is increasingly focused on macromolecular engineering: the manipulation of structure at the molecular scale to control properties and fitness for purpose of the final component. Intimately linked to this are the objectives of predicting properties in the context of an optimised design and of establishing robust processing routes and process control systems allowing the desired properties to be achieved reliably.