<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The objective of this study is to optimize the fabrication factors of a consumer-grade fused filament fabrication (FFF) system. The input factors were nozzle temperature, bed temperature, printing speed, and layer thickness. The optimization aims to minimize average surface roughness (Ra) indicating the surface quality of benchmarks. In this study, Ra was measured at two positions, the bottom and top surface of benchmarks. For the fabrication, the material used was the Polylactic acid (PLA) filament. A response surface method (RSM), central composite design (CCD), was utilized to carry out the optimization. The analysis of variance (ANOVA) was calculated to explore the significant factors, interactions, quadratic effect, and lack of fit, while the regression analysis was performed to determine the prediction equation of Ra. The model adequacy checking was conducted to check whether the residual assumption still held. The total number of thirty benchmarks was fabricated and measured using a surface roughness tester. For the bottom surface, the analysis results indicated that there was the main effect from only one factor, printing speed. However, for the top surface, the ANOVA signified an interaction between the printing speed and layer thickness. The optimal setting of these factors was also recommended, while the empirical models of Ra at both surface positions were also presented. Finally, an extra benchmark was fabricated to validate the empirical model.</p>
</abstract>

The objective of this study is to optimize the fabrication factors of a consumer-grade fused filament fabrication (FFF) system. The input factors were nozzle temperature, bed temperature, printing speed, and layer thickness. The optimization aims to minimize average surface roughness (Ra) indicating the surface quality of benchmarks. In this study, Ra was measured at two positions, the bottom and top surface of benchmarks. For the fabrication, the material used was the Polylactic acid (PLA) filament. A response surface method (RSM), central composite design (CCD), was utilized to carry out the optimization. The analysis of variance (ANOVA) was calculated to explore the significant factors, interactions, quadratic effect, and lack of fit, while the regression analysis was performed to determine the prediction equation of Ra. The model adequacy checking was conducted to check whether the residual assumption still held. The total number of thirty benchmarks was fabricated and measured using a surface roughness tester. For the bottom surface, the analysis results indicated that there was the main effect from only one factor, printing speed. However, for the top surface, the ANOVA signified an interaction between the printing speed and layer thickness. The optimal setting of these factors was also recommended, while the empirical models of Ra at both surface positions were also presented. Finally, an extra benchmark was fabricated to validate the empirical model.

Surface Roughness Reduction in A Fused Filament Fabrication (FFF) Process using Central Composite Design Method

Production Engineering Archives

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

The objective of this study is to optimize the fabrication factors of a consumer-grade fused filament fabrication (FFF) system. The input factors were nozzle...

Surface Roughness Reduction in A Fused Filament Fabrication (FFF) Process using Central Composite Design Method

Publié en ligne: 19 mai 2022

Pages: 157 - 163

Reçu: 15 juil. 2021

Accepté: 27 nov. 2021

DOI: https://doi.org/10.30657/pea.2022.28.18

Mots clés
Average surface roughness, Central composite design, Fused filament fabrication

© 2022 Karin Kandananond, published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

Surface Roughness Reduction in A Fused Filament Fabrication (FFF) Process using Central Composite Design Method

Publié en ligne: 19 mai 2022

Pages: 157 - 163

Reçu: 15 juil. 2021

Accepté: 27 nov. 2021

DOI: https://doi.org/10.30657/pea.2022.28.18

Mots clésAverage surface roughness, Central composite design, Fused filament fabrication

© 2022 Karin Kandananond, published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

Mots clés
Average surface roughness, Central composite design, Fused filament fabrication