优化工艺参数和增材制造的基于聚烯的脚脚的机械性能
Sahar Swesi1, Mohamed Yousfi1, Nicolas Tardif2
1Université de Lyon, CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Université Claude Bernard Lyon 1, INSA Lyon, Université Jean Monnet, 69621 Villeurbanne Cedex, France.
Polymers
|July 30, 2025
概括
这项研究优化了聚烯脚脚 (AFOs) 的合丝制造 (FFF) 3D打印. 关键发现显示,充填密度和90°方向显著提高机械性能,减少医疗应用的扭曲.
科学领域:
- 添加剂制造 添加剂制造 添加剂制造
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 合纤维制造 (FFF) 3D打印对定制脚脚 (AFO) 有希望.
- 聚烯 (PP) 为整形器具提供了理想的性能,但由于粘附和收缩,在FFF中面临挑战.
- 优化FFF参数对于在医疗添加剂制造中使用PP至关重要.
研究的目的:
- 优化 FFF 3D 打印参数,以制造功能性,针对患者的聚烯 AFOs.
- 调查打印参数对PP标本和AFO机械性能的影响.
- 评估使用有限元法 (FEM) 模拟来预测PP AFOs中的FFF过程诱导的扭曲.
主要方法:
- 聚乙烯丝的热力学表征和材料模型的开发.
- 塔古奇设计的实验 (DOE) 研究打印参数 (温度,速度,层厚度,灌装密度/模式,方向).
- 机械评估的三点曲和拉伸测试;使用Digimat-AM®进行扭曲分析的FEM模拟.
主要成果:
- 最佳的打印速度在50mm/s左右,最大化了曲模量.
- 灌装密度是最重要的参数,极大影响最大应力 (73.2%) 和间层切割强度 (ILSS) (75.2%).
- 一个90度的部分方向最小化了变形和·米塞斯应力,通过FEM模拟验证.
结论:
- 优化的FFF参数,特别是灌装密度和90°方向,显著提高了PP AFO的机械性能和稳定性.
- 模拟FEM有助于预测和减轻FFF过程引起的扭曲,确保更高质量的orthoses.
- 这项研究为打印PP部件提供了可靠的方法,扩大了其在医疗级增材制造方面的潜力.
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