Mathematical modelling of surface roughness for vapour processing of ABS parts fabricated with fused deposition modelling

Chohan, Jasgurpreet Singh; Singh, Rupinder; Boparai, Kamaljit Singh

doi:10.1016/j.jmapro.2016.09.002

Cited by 35 publications

(21 citation statements)

References 13 publications

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“…Many research works have investigated the vapor smoothing process; it is a relatively straightforward and well-established process. Chohan et al [ 17 , 18 , 19 ] published a series of articles where they performed a parametric optimization to treat FFF ABS hip replicas with acetone vapors. They evaluated the impact of smoothing duration and repetition of smoothing cycles on surface finish, dimensional accuracy, and stability of the parts, and they concluded that small smoothing duration (30 s) and repeated cycles could yield remarkably lower surface roughness.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Analysis of Chemical, Thermal, and Mechanical Post-Process of Fused Filament Fabricated Polyetherimide Parts for Surface Quality Enhancement

2021

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Additive manufacturing technologies are increasingly being used in production systems because they shorten product development time and production cost, but surface integrity remains a limitation to meet the standards set by conventional manufacturing. In this research article, two chemical, one thermal, and three mechanical finishing operations are proposed to post-process fused filament fabricated Ultem 9085 parts. Their effects on the parts’ surface quality and dimensional accuracy (changes in their width, height, length, and mass) are examined through optical and electron scanning microscopy, and the advantages and disadvantages of each method are discussed. Microscope evaluation has proven to be a powerful tool to observe apparent differences and understand the nature of different morphological changes. Results indicate that chemical and thermal treatments and ball burnishing are good candidates to significantly enhance the finish of the parts, despite requiring the use of solvents or provoking dimensional changes to the parts. The effects of abrasive mechanical treatments are more moderate at a macroscopic scale, but the surface of the filaments suffers the most remarkable changes.

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Section: Introductionmentioning

confidence: 99%

A Comparative Analysis of Chemical, Thermal, and Mechanical Post-Process of Fused Filament Fabricated Polyetherimide Parts for Surface Quality Enhancement

2021

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“…If a comparison is made with similar studies on the one hand using 70 corundum μ m in resin parts manufactured using SLA with a layer height of 0.12 mm, an improvement in surface quality of around 70% was achieved (Leong et al , 1998). On the other hand, contrasting the results with other post-processing operations, the surface quality of ABS parts treated with acetone has been improved by more than 90% (Chohan et al , 2016; Lalehpour & Barari, 2016; Singh et al , 2017) and PLA treated with other solvents by around 95% [19]. Although the improvement is greater, it must be taken into account that chemical post-processing requires a greater number of means, such as individual (gloves, glasses) and collective (extractors) protective equipment, systems for the treatment of the substances used, etc.…”

Section: Discussionmentioning

confidence: 68%

On improving the surface finish of 3D printing polylactic acid parts by corundum blasting

Puerta

López-Castro

López

et al. 2021

RPJ

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Purpose Fused filament fabrication or fused deposition modeling (FFF/FDM) has as one of its main restrictions the surface quality intrinsic to the process, especially linked to the layer thickness used during manufacture. The purpose of this paper is to study the possibility of improving the surface quality of polylactic acid (PLA) parts manufactured by FFF using the shot blasting technique. Design/methodology/approach The influence of corundum blasting on 0.2 mm layer thickness FDM PLA parts treated with two sizes of abrasive, different exposure times and different incidence pressures. Findings As a result, improvements of almost 80% were obtained in the surface roughness of the pieces with high exposure times, and more than 50% in just 20 s. Originality/value This technique is cheap, versatile and adaptable to different part sizes and geometries. Furthermore, it is a fast and environmentally friendly technique compared to conventional machining or vapor smoothing. Despite this, no previous studies have been carried out to improve the quality of this technology.

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“…Taguchi L9 method is applied to optimize the process and found that layer thickness was the most influencing parameter. Chohan et al [25] used the Taguchi and ANOVA for 3D-printed parts using FDM and vapour smoothing. In this experiment, six parameters were taken and derived using the Buckingham Pi theorem; it was also found that after a number of cycles of vapour smoothing, there is an increase in the percentage of surface finish.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimization of FDM Printing Process Parameters on Surface Finish, Thickness, and Outer Dimension with ABS Polymer Specimens Using Taguchi Orthogonal Array and Genetic Algorithms

Chohan

Kumar

Yadav

et al. 2022

Mathematical Problems in Engineering

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Fused deposition modelling (FDM) is a technique of additive manufacturing used to fabricate a 3D (three-dimensional) model with layer-by-layer deposition of required materials with less material wastage. FDM is used to make any objects with a meager cost, but also there are some negative points related to less strength, less accuracy, and less surface finish. In this study, acrylonitrile butadiene styrene (ABS) is printed using an FDM printer to investigate the effects of various changing parameters like nozzle temperature (°C), infill pattern, and printing speed (mm/s) on surface roughness and thickness measurement. Experiments are designed using the Taguchi L9 orthogonal array method and ANOVA method. For obtaining an increase in surface roughness, the most influencing factor is printing speed with 83.41% contribution, and the effect of nozzle temperature is 9.04%. Lesser printing speed enhances the surface finish and, in the case of thickness and outer dimension of all the printed samples, results are almost constant. Regression analysis is performed to formulate the single-objective equations, and a genetic algorithm (GA) is applied to optimize the values of process parameters.

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Mathematical modelling of surface roughness for vapour processing of ABS parts fabricated with fused deposition modelling

Cited by 35 publications

References 13 publications

A Comparative Analysis of Chemical, Thermal, and Mechanical Post-Process of Fused Filament Fabricated Polyetherimide Parts for Surface Quality Enhancement

A Comparative Analysis of Chemical, Thermal, and Mechanical Post-Process of Fused Filament Fabricated Polyetherimide Parts for Surface Quality Enhancement

On improving the surface finish of 3D printing polylactic acid parts by corundum blasting

Optimization of FDM Printing Process Parameters on Surface Finish, Thickness, and Outer Dimension with ABS Polymer Specimens Using Taguchi Orthogonal Array and Genetic Algorithms

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