碳纤维增强3d打印聚合物的拉伸性能：打印参数的影响

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-04-03 DOI:10.1016/j.engfailanal.2025.109577

Clare Burnett , Georg Graninger , Zana Eren , Brian G. Falzon , Zafer Kazancı

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引用次数: 0

摘要

纤维增强3d打印复合材料的机械性能高度依赖于切片和加工参数，但对这些影响的系统理解仍然有限。本研究旨在系统评估填充模式、填充密度、床层取向和层厚对Markforged 3D打印机制备的短碳纤维增强尼龙（Onyx）和非增强尼龙拉伸性能的影响。拉伸测试通过不同的切片参数来评估拉伸模量、极限拉伸强度、断裂伸长率和泊松比。不同的栅格角度（相对于x轴0°、90°、45°和- 45°）、三种填充模式（矩形、三角形、六边形）和多种密度（17% - 92%）进行了测试，以评估它们对机械行为的影响。采用扫描电镜（SEM）和纤维体积分数点火测试等方法定量表征了玛瑙复合材料的孔隙含量和纤维分布。此外，应用混合规则（ROM）并证明与实验结果非常吻合，为不同填充密度的拉伸性能提供了预测框架。这项研究的结果通过确定增强机械性能的关键参数，有助于优化纤维增强增材制造，支持航空航天、汽车和轻型工程系统中的结构应用。

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Tensile performance of carbon fibre-reinforced 3D-printed polymers: Effect of printing parameters

The mechanical performance of fibre-reinforced 3D-printed composites is highly dependent on slicing and processing parameters, yet a systematic understanding of these effects remains limited. This study aims to systematically evaluate the influence of infill pattern, infill density, bed orientation, and layer thickness on the tensile properties of short carbon fibre-reinforced Nylon (Onyx) and unreinforced Nylon fabricated using Markforged 3D printers. Tensile testing was conducted to assess tensile modulus, ultimate tensile strength, elongation at break, and Poisson’s ratio across varying slicing parameters. Various raster angles (0°, 90°, 45° and −45° relative to the x-axis), three infill patterns (rectangular, triangular, hexagonal), and multiple densities (17 %–92 %) were examined to assess their influence on mechanical behaviour. Scanning electron microscopy (SEM) and fibre volume fraction ignition testing were used to quantify void content and fibre distribution in Onyx composites. Furthermore, the Rule of Mixtures (ROM) was applied and demonstrated strong agreement with experimental results, providing a predictive framework for tensile performance across different infill densities. The findings of this study contribute to the optimisation of fibre-reinforced additive manufacturing by identifying key parameters that enhance mechanical properties, supporting structural applications in aerospace, automotive, and lightweight engineering systems.

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.