3D打印尼龙11-连续不锈钢纤维增强复合材料力学性能评价

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-04-24 DOI:10.1016/j.compositesb.2025.112484

Alison Clarke , Hui Zhang , Andrew Dickson , Budi Zhao , Ben L. Jones , Denis P. Dowling

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引用次数: 0

摘要

本文首次报道了连续不锈钢纤维束增强尼龙11 （PA11）复合材料的3D打印技术。采用短束剪切（SBS）试验评价复合材料的力学性能，层间剪切强度（τILSS），并进行Charpy冲击试验。对于这两项机械测试，检查了两个打印方向：平面，垂直于打印层加载，以及边缘，平行于打印层加载。PA11-SSF的Charpy冲击值在3d打印方向上和平面方向上分别高达83.9和73.1 kJ/m2。侧面SBS的τILSS值为24.9 MPa，高于平面取向的18.25 MPa。这种性能差异与纤维在横向和垂直（层）方向上的分布有关。因此，为了最大限度地提高复合材料的抗冲击性，在组件设计和打印过程中，需要考虑连续纤维方向（边缘或平面）与预期的冲击方向。研究使用安装在x射线计算机断层扫描系统内的SBS系统进行，便于监测复合材料在加载过程中的钢纤维变形。此外，PA11-SSF复合材料对MEX 3d打印尼龙11、尼龙与短碳纤维、短连续碳纤维复合材料进行了对比力学测试。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Evaluation of the mechanical properties of 3D printed Nylon 11-continuous stainless steel fibre reinforced composites

This paper reports for the first time, on the 3D printing of Nylon 11 (PA11) composites reinforced with continuous stainless steel fibre (SSF) bundles. The mechanical properties of the composites were evaluated by short beam shear (SBS) testing to evaluate the interlaminar shear strength (

τ

ILSS), along with Charpy impact testing. For both mechanical tests, two print orientations were examined: the flat, loaded perpendicularly to the printed layers, and the on-edge, loaded parallel to the printed layers. The PA11-SSF’s Charpy impact values were up to 83.9 and 73.1

kJ / m^{2}

for the on-edge and flat orientation 3D-printed orientations, respectively. The on-edge SBS testing also demonstrated higher

τ

ILSS of 24.9 MPa, compared with the 18.25 MPa obtained than the flat orientation. This difference in performance is associated with fibre distribution in the transverse versus the vertical (layer) directions. Thus demonstrating that to maximise the composite’s impact resistance, the continuous fibre orientation (on-edge or flat) needs to be considered in conjunction with the anticipated impact direction during a component design and printing. Studies carried out using an SBS system mounted inside an X-ray computed tomography system, facilitating the monitoring of the steel fibre deformation within the composite during loading. In addition, PA11-SSF composites, comparison mechanical testing was carried out on MEX 3D-printed Nylon 11, Nylon with short carbon fibre, and composites that combine short and continuous carbon.

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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.