Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
THE INFLUENCE OF PRINTING PARAMETERS ON MONOLAYER PART FEATURES IN FUSED FILAMENT FABRICATION
Submission Author:
Thiago Glissoi Lopes , SP
Co-Authors:
Thiago Glissoi Lopes, Laura Marques Queiroz, Verena Bombonatti, Matheus Carmo, Paulo Aguiar, Thiago França
Presenter: Thiago Glissoi Lopes
doi://10.26678/ABCM.COBEM2021.COB2021-0745
Abstract
The Fused Filament Fabrication (FFF) process deals with the manufacturing of parts by means of the addition of material in successive layers. The monitoring of additive manufacturing processes, such as the FFF, has been the subject of various studies. The FFF process has a critical point in its beginning, during the fabrication of the first layer. If defects are detected at this point, the FFF process can be interrupted, thus, preventing wastessuch as raw material, machine time, energy, premature maintenance due to machine wear, and others. The quality of parts obtained by FFF are directly influenced by the printing parameters, determined by the process operator in order to achieve, for example, a certain stress resistance, surface roughness, or to correct minor calibration variations in the 3D printer mechanical elements. It is a common practice in FFF monitoring studies to print what is called a monolayer part, which is the fabrication either of a part that consists of a single layer, or of just the first layer of a multilayered part. Visual inspection of parts for quality assessment is a very common practice in monitoring studies, due to its capability of easily detecting countless geometric variations on a certain part. Thus, the present work sought to study, by means of visual inspection, the influence of several printing parameters upon the geometry and surface quality of monolayer parts obtained by the FFF process. In order to facilitate the visual inspection of the parts, a scanner was used to digitalize the upper surface of each printed part. The results showed that each printing parameter has an influence on the quality of the obtained parts. And that influence can result in defects that range from minor superficial deviations to major superficial and geometric ones.
Keywords
Process monitoring, Printing characteristics, Part evaluation, visual inspection, fused filament fabrication
