论文标题
粘塑料线：在表面上打印单个屈服应力材料
Viscoplastic Lines: Printing a Single Filament of Yield Stress Material on a Surface
论文作者
论文摘要
这项研究表明，挤出到预润湿的固体表面上的屈服应力（粘塑料）流体的单细丝的扩散。细丝在表面张力下侧面散布，直到屈服应力主导时达到最终平衡形状。我们使用简单的实验设置将细丝打印在运动表面上，并使用光学相干断层扫描测量其最终宽度。此外，我们提出了最终宽度的缩放定律，并使用渐近分析确定相应的因子。然后，我们分析理论与实验之间的一致性水平，并讨论差异的可能起源。此处研究的过程在基于挤出的热塑性和BIO-3D打印中具有应用。
This study presents the spreading of a single filament of a yield stress (viscoplastic) fluid extruded onto a pre-wetted solid surface. The filaments spread laterally under surface tension forces until they reach a final equilibrium shape when the yield stress dominates. We use a simple experimental setup to print the filaments on a moving surface and measure their final width using optical coherence tomography. Additionally, we present a scaling law for the final width and determine the corresponding pre-factor using asymptotic analysis. We then analyse the level of agreement between the theory and experiments and discuss the possible origins of discrepancies. The process studied here has applications in extrusion-based thermoplastic and bio-3D printing.
