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Updated: Jan 29, 2026

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Fused Filament Fabrication FFF of Metal-Ceramic Components
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调查使用化丝制造的3D打印多乳酸束中的桥梁缺陷
Hao He1, Zhi Zhu1, Y X Zhang1,2
1Centre for Advanced Manufacturing Technology, School of Engineering, Faculty of Engineering, Computing and Science, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.
Polymers
|January 28, 2026
概括
3D打印中的桥梁缺陷会削弱聚合物部件. 这项研究提供了一个框架,通过优化打印设置和几何来理解和减轻这些缺陷,以获得更强大,更灵活的设计.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 化纤维制造 (FFF) 的桥梁缺陷降低了3D打印聚合物的结构完整性.
- 目前的方法,如最小化跨度或添加支,限制了设计自由.
研究的目的:
- 开发一种分析实验框架,用于研究聚乳酸 (PLA) 中的桥梁缺陷形成.
- 通过调整 FFF 打印设置和优化光束几何形状,提出缓解策略.
主要方法:
- 在PLA结构中使用FFF系统地调查桥梁缺陷的演变.
- 开发用于温度,弹性模量和链曲率的分析模型.
- 模型的实验验证和曲行为的量化.
主要成果:
- 分析模型准确地预测了材料性质的演变 (R2高达0.9433).
- 曲行为被量化,显示带宽宽度与跨度长度的增加.
- 热诱导的残余应力被确定为结构不稳定的首要驱动因素.
结论:
- 该研究提供了一个框架,以了解和减轻FFF中的桥梁缺陷.
- 优化打印参数和几何可以提高结构性能.
- 结果为无缺陷的3D打印提供了实际指导.
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