对于使用聚乳酸灯丝挤出材料的过程稳定性评估,高重力影响.
1Department of System Design Engineering, Keio University, 3-14-1Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan.
Scientific reports
|August 8, 2025
概括
在研究增材制造时,这项研究发现,高重力加速显著提高了材料挤出质量和表面外观. 增强的重力可以改善材料沉积,从而获得更好的3D打印部件.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 增材制造 (AM) 提供了跨行业的变革潜力,特别是在物联网制造业.
- 材料挤出 (MEX) 是一个关键的增材制造技术,有改进的余地.
- 引力对MEX过程的影响是一个尚未探索的领域.
研究的目的:
- 评估高重力对材料挤出 (MEX) 的影响.
- 评估控制的重力加速如何影响MEX中的材料流和表面质量.
- 为了确定增强的AM部件制造的最佳引力条件.
主要方法:
- 采用了一种使用专门的高重力材料挤出系统的实验方法.
- 使用离心力应用控制的重力加速到5G.
- 材料流动动力学和表面质量在不同的重力下被全面评估.
主要成果:
- 高重力加速 (高达5G) 显著提高了材料挤出质量.
- 增强的重力导致在挤出过程中更好的材料沉积.
- 在高引力场下,制成的零件表现出优越的表面质量和外观.
结论:
- 高重力场显著提高通过MEX.通过增材制造的零件的质量和外观.
- 这些发现表明,操纵重力是优化AM过程的可行策略.
- 这项研究为利用引力力量的先进制造系统开辟了新的途径.
相关概念视频
01:08Molecular Weight of Step-Growth Polymers
2.3K
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
2.3K
01:21Plastic Behavior
262
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
262