加载速率、黏度和粘结剂活化对渗透UD-NCF弯曲响应的影响

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-10-06 DOI:10.1016/j.compositesa.2025.109347

Renan Miranda Portela , Bastian Schäfer , Luise Kärger , Alfredo Rocha de Faria , John Montesano

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引用次数: 0

摘要

浸润增强织物的弯曲响应在湿压缩成型（WCM）中至关重要，因为它影响宏观起皱。粘合剂稳定织物可用于WCM，以提高可处理性和减少缺陷，因此需要对其进行表征。本研究考察了渗透粘结剂稳定碳纤维单向无卷曲织物（UD-NCF）的弯曲行为，重点研究了粘度、加载率和粘结剂预活化的影响。与干燥织物相比，由于润滑和较低的拖线摩擦，渗透降低了弯曲刚度，而更高的加载率增加了所有考虑条件下的弯曲刚度。此外，粘合剂预活化通过增强双针粘合和摩擦来增加织物的刚度。作为对渗透粘合剂稳定UD-NCF弯曲的首次研究，这项工作促进了对复杂弯曲响应的理解。

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Effect of loading rate, viscosity, and binder activation on the bending response of an infiltrated UD-NCF

Assessing the bending response of infiltrated reinforcement fabrics is crucial in wet compression molding (WCM) as it affects macroscopic wrinkling. Binder-stabilized fabrics may be used in WCM to improve handleability and reduce defects, necessitating their characterization. This study examines the bending behavior of an infiltrated binder-stabilized carbon fiber unidirectional non-crimp fabric (UD-NCF), focusing on the effects of viscosity, loading rate, and binder pre-activation. Infiltration reduces bending stiffness compared to dry fabric owing to lubrication and lower tow-stitch friction, while higher loading rates increase bending stiffness for all considered conditions. Moreover, binder pre-activation increases fabric stiffness by enhancing tow-stitch cohesion and friction. As the first investigation on infiltrated binder-stabilized UD-NCF bending, this work advances understanding of the complex bending response.

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.