3d printing of a continuous carbon fiber reinforced bronze-matrix composite using material extrusion

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2024-11-07 DOI:10.1016/j.compositesb.2024.111961

Mehrdad Mousapour, S Siddharth Kumar, Jouni Partanen, Mika Salmi

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Abstract

The main objective of this study is to investigate, for the first time, the feasibility of 3d printing a continuous carbon fiber (CCF) reinforced metal matrix composite using a cost-effective material extrusion (MEX) technology. Notably, this paper presents a detailed analysis of the microstructure and mechanical and physical properties of a bronze matrix composite reinforced with CCF. The results reveal that CCF significantly impedes the expected densification levels of the composite's structure, causing extensive gaps between the bronze particles. However, despite the high porosity level, the composite's electrical conductivity remains relatively high, demonstrating the limited negative impact of the CCF material on the composite's conductivity. Moreover, mechanical evaluations were performed through 3-point bending and tensile tests, highlighting the composite material's advantages and limitations. The results show that the composite material exhibits an improved yield stress of 76 %, increased ultimate tensile strength of 20 %, and an extended fracture strain of 30 %. However, the flexural strength decreases by 23 % due to the presence of massive gaps formed by CCF.

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利用材料挤压技术 3d 打印连续碳纤维增强青铜基复合材料

本研究的主要目的是首次研究利用经济有效的材料挤压（MEX）技术 3d 打印连续碳纤维（CCF）增强金属基复合材料的可行性。值得注意的是，本文详细分析了用 CCF 增强的青铜基复合材料的微观结构、机械性能和物理性能。结果表明，CCF 严重阻碍了复合材料结构的预期致密化水平，导致青铜颗粒之间出现大量空隙。然而，尽管孔隙率较高，复合材料的导电率仍然相对较高，这表明 CCF 材料对复合材料导电率的负面影响有限。此外，还通过三点弯曲和拉伸试验进行了机械评估，突出了复合材料的优势和局限性。结果显示，复合材料的屈服应力提高了 76%，极限拉伸强度提高了 20%，断裂应变提高了 30%。然而，由于 CCF 形成的巨大间隙的存在，抗弯强度降低了 23%。

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

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.