Effects of process parameters on the quality of PLA products fabricated by fused deposition modeling (FDM): surface roughness and tensile strength
Effects of process parameters on the quality of PLA products fabricated by fused deposition modeling (FDM): surface roughness and tensile strength
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DOI：
10.3139/120.111178
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发表时间：
2018-05-01
影响因子：
2.5
通讯作者：
Kahraman, Yusuf
中科院分区：
文献类型：
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作者：
Altan, Mirigul;Eryildiz, Meltem;Kahraman, Yusuf
本研究调查了工艺参数对熔融沉积成型 (FDM) 制造的产品质量的影响，例如表面粗糙度和拉伸强度。聚乳酸 (PLA) 样品是在 FDM 机器上以不同的层厚度、喷嘴温度和沉积头速度构建的。还考虑了在此过程中冷却样品的影响。实验研究采用混合型田口L16正交阵进行。还通过方差分析 (ANOVA) 讨论了每个参数的有效性。拉伸强度结果与断裂表面的光学图像一致，而表面粗糙度结果与零件沿厚度方向的表面形貌一致。发现两个主要的质量特征是层厚度和沉积头速度。较低的层厚度值产生较高的拉伸强度和较低的表面粗糙度。发现冷却风扇的使用和喷嘴温度是最不有效的参数。最后，结果表明，在最佳工艺条件下，FDM 样品的拉伸强度和表面质量分别提高了约 25% 和 12%。
This study investigates the effects of process parameters on the quality of products fabricated by fused deposition modeling (FDM), such as surface roughness and tensile strength. Polylactic acid (PLA) samples were built on a FDM machine at various layer thicknesses, nozzle temperature and deposition head velocity. The effect of cooling the samples during the process was also considered. The experimental study was performed according to a mixed type Taguchi L16 orthogonal array. The effectiveness of each parameter was also discussed by an analysis of variance (ANOVA). The tensile strength results were compatible with the optical images of the fracture surfaces while the surface roughness results were compatible with the surface topography of the parts along the thickness. The two dominant quality characteristics were found to be layer thickness and deposition head velocity. Lower layer thickness values yielded higher tensile strength and lower surface roughness. Use of a cooling fan and nozzle temperature were found to be the least effective parameters. Finally, the results indicated that tensile strength and surface quality of the FDM samples improved about 25%, and 12 %, respectively at optimal process conditions.