Bere Paul, Neamtu Calin, Udroiu Razvan
Department of Manufacturing Engineering, Faculty of Machine Building, Technical University of Cluj-Napoca, Memorandumului 28, 400114 Cluj-Napoca, Romania.
Department of Design Engineering and Robotics, Faculty of Machine Building, Technical University of Cluj-Napoca, Memorandumului 28, 400114 Cluj-Napoca, Romania.
Polymers (Basel). 2020 Sep 27;12(10):2220. doi: 10.3390/polym12102220.
Fibre-reinforced polymers (FRP) have attracted much interest within many industrial fields where the use of 3D printed molds can provide significant cost and time savings in the production of composite tooling. Within this paper, a novel method for the manufacture of complex-shaped FRP parts has been proposed. This paper features a new design of bike saddle, which was manufactured through the use of molds created by fused deposition modeling (FDM), of which two 3D printable materials were selected, polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS), and these molds were then chemically and thermally treated. The novel bike saddles were fabricated using carbon fiber-reinforced polymer (CFRP), by vacuum bag technology and oven curing, utilizing additive manufactured (AM) molds. Following manufacture the molded parts were subjected to a quality inspection, using non-contact three-dimensional (3D) scanning techniques, where the results were then statistically analyzed. The statistically analyzed results state that the main deviations between the CAD model and the manufactured CFRP parts were within the range of ±1 mm. Additionally, the weight of the upper part of the saddles was found to be 42 grams. The novel method is primarily intended to be used for customized products using CFRPs.
纤维增强聚合物(FRP)在许多工业领域引起了广泛关注,在这些领域中,使用3D打印模具可以在复合模具生产中显著节省成本和时间。本文提出了一种制造复杂形状FRP零件的新方法。本文介绍了一种新型自行车座的设计,该座通过使用熔融沉积建模(FDM)创建的模具制造,选择了两种3D可打印材料,聚乳酸(PLA)和丙烯腈丁二烯苯乙烯(ABS),然后对这些模具进行化学和热处理。新型自行车座采用碳纤维增强聚合物(CFRP),通过真空袋技术和烘箱固化,利用增材制造(AM)模具制造。制造完成后,使用非接触式三维(3D)扫描技术对成型零件进行质量检测,然后对结果进行统计分析。统计分析结果表明,CAD模型与制造的CFRP零件之间的主要偏差在±1毫米范围内。此外,发现座垫上部的重量为42克。该新方法主要用于使用CFRP的定制产品。