The PolyJet Direct 3DP Process [1] 

The PolyJet Direct 3DP Process [1] 

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Conference Paper
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In the current study an investigation of the process parameters effects, concerning the vertical and planar surface roughness of parts produced by Polyjet Direct 3D Printing Process, is presented. Following the initial identification and preparation of in STL format four experiments have been conducted utilizing the Taguchi L4 (23) array. Process p...

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Citations

... The effectiveness of these parameters on the surface roughness of PolyJet-printed parts has been investigated in the literature. Kechagias et al. stated that lower layer thickness (16 µm) and glossy surface finish setting resulted in lower surface roughness values and scale factor was not a dominant factor on surface roughness [16]. Aslani et al. stated that surface finish setting (matte or glossy) has the highest effect on surface roughness with a contribution rate of 95%. ...
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... They stated that a smaller layer thickness (16 µm) and glossy surface finish setting gives the best results in terms of surface roughness. They also indicated that scale factor was not a dominant factor for surface roughness [30]. Aslani et al. investigated the effect of layer thickness, surface finish setting (matte or glossy) and build scale on surface roughness of MJ printed parts. ...
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... Poly-Jet 3D printing (PJ-3DP) is an Additive Manufacturing (AM) process capable of building accurate physical prototypes with complex geometry, by a process of adding photopolymer resin layers. This is enabled by a technology utilizing simultaneous jetting of modelling materials to create physical free form prototypes [1]. In PJ-3D printing, layers of a photopolymer resin are selectively jetted onto a build-tray via inkjet printing [2]. ...
... where ϕ is the profile angle, and they experimentally found it to be 12 degrees. Kechagias et al. [1] investigated the effect of the process parameters on the vertical and the planar surface roughness of parts produced by the PJ-3DP process. Analysis of Means diagrams were used to identify the optimum levels for each parameter and Analysis of Variance was used to identify the effect of each parameter on the surface roughness. ...
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... Figure 1. Cad file of the test spesimen (reproduced from [19]). PolyJet has been used by a number of researchers and engineers for producing samples and devices for a variety of purposes. ...
... Moreover, the experimental results showed an increase of the surface roughness, as the orientation angle θ increased. Kechagias et al. [19] investigated the effect of three process parameters (layer thickness, build style and model scale) on the surface roughness of prototypes produced by the PolyJet Direct 3D printing process. Four parts created using the Taguchi L 4 (2 3 ) orthogonal array, while three surface roughness indicators (Ra, Rs and Rt) were measured in three positions. ...
... In this paper, Grey Taguchi method is utilized for the optimization of all three surface roughness parameters measured at the three positions analyzed in [19]. Grey Taguchi method is adopted by many researchers to examine the multiple performance characteristics of an experiment. ...
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