Microstructural characteristics and mechanical properties of 3D printed Kevlar fibre reinforced Onyx composite

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2024-08-09 DOI:10.1515/mt-2024-0138

Alagar Vaithiyanathan, Hameed Farhan, Dhanigaivel Elil Raja, Sundar Prathap Singh, Tushar Sonar

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Abstract

The main objective of this study is to develop the Kevlar fibre reinforced Onyx composite (KFRO) material by employing the 3D printing technology and examine the effect of Kevlar fibre reinforcement percentage on microstructural characteristics and mechanical properties of developed composite material. The methodology of continuous fibre reinforced composites (CFRC) was followed and the Kevlar fibre reinforcement % was varied as 10 %, 20 % and 30 % in the composite material fabrication. Results disclosed that the KFRO composite 3D printed using 30 % Kevlar fibre reinforcement in Onyx matrix yielded greater tensile strength of 124 MPa, flexural strength of 105 MPa, impact toughness of 2.4 J and shore hardness of 76 D. The mechanical properties of KFRO composite were significantly improved at 20 % of Kevlar fibre reinforcement compared to 10 % of Kevlar fibre reinforcement. Further increase in Kevlar fibre reinforcement up to 30 % showed slight enhancement in mechanical properties of KFRO composite when compared to 20 % of Kevlar fibre reinforcement. The overall strength improvement is a result of the increased reinforcement, precise alignment of fibres in the loading direction, and the uniform distribution of fibres within the onyx.

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三维打印凯夫拉纤维增强缟玛瑙复合材料的微结构特性和机械性能

本研究的主要目的是利用三维打印技术开发凯夫拉纤维增强缟玛瑙复合材料（KFRO），并研究凯夫拉纤维增强比例对所开发复合材料的微观结构特征和机械性能的影响。该研究采用连续纤维增强复合材料（CFRC）的方法，在复合材料制造过程中，Kevlar 纤维的增强比例分别为 10%、20% 和 30%。结果表明，在缟玛瑙基体中使用 30% Kevlar 纤维增强材料三维打印的 KFRO 复合材料的拉伸强度达到 124 兆帕，弯曲强度达到 105 兆帕，冲击韧性达到 2.4 J，邵氏硬度达到 76 D。与 20% 的 Kevlar 纤维增强相比，KFRO 复合材料的机械性能略有提高。整体强度的提高得益于增强、纤维在加载方向上的精确排列以及纤维在缟玛瑙中的均匀分布。

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来源期刊

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.

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