Journal of Northeastern University(Natural Science) ›› 2021, Vol. 42 ›› Issue (7): 980-986.DOI: 10.12068/j.issn.1005-3026.2021.07.011

• Mechanical Engineering • Previous Articles     Next Articles

Theoretical Model and Experimental Verification of Surface Roughness of Fused Filament Fabrication Plates

JIANG Shi-jie, HU Ke, CHEN Pi-feng, SIYAJEU Yannick   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Revised:2021-01-07 Accepted:2021-01-07 Published:2021-07-16
  • Contact: JIANG Shi-jie
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Abstract: Aiming at the surface quality defects of fused filament fabrication(FFF)products, a theoretical modeling method of the surface roughness of FFF products was proposed. Taking into account the actual conditions of the samples, the surface profile of the material filament was investigated, and the surface roughness theoretical models of FFF samples in two different directions(vertical and parallel to the fiber direction) were established respectively. At the same time, a series of corresponding experimental tests were performed using a laser microscope. Based on the comparison between theoretical and experimental results, the proposed model was verified. The sensitivity analysis of the theoretical model shows that increasing the extrusion width or printing layer thickness will increase the surface roughness of FFF products, while increasing the overlapping area width will decrease the surface roughness.

Key words: fused filament fabrication(FFF); surface roughness; surface profile; theoretical model; experimental test

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