Chemical Smoothing of 3D Printed ABS

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dc.contributor.authorPearse, Andrea
dc.date.accessioned2019-10-10T08:25:36Z
dc.date.available2019-10-10T08:25:36Z
dc.date.issued2018
dc.description.abstractThis report investigates the characterization of 3D printed materials in order to improve design guidelines and material properties of this relatively new manufacturing method – focussing on the requirements of surface finish and strength. The effects of chemical exposure to parts produced through Fused Deposition Modelling is therefore examined, regarding the ability of treatments to improve the surface finish of parts as well as their effect on the tensile properties of parts. Parts were additively manufactured through the process of FDM using the filament material acrylonitrile-butadiene-styrene (ABS). Parts were printed both flat and upright so that in-plane as well as interlaminar tensile properties could be investigated. Chemical treatment methods included dipping in an acetone solution and acetone vapour smoothing. Microscopic images as well as surface roughness tests examined the effect of these smoothing methods on the surface finish of each specimen and average roughness values were compared before and after smoothing. Lastly, the tensile properties of each specimen were investigated through elongation until fracture within a Zwick tensile tester. Strain readings were obtained from an extensometer as well as Digital Image Correlation and these differing results were compared. The strength data of treated and untreated specimens, in both testing directions were also compared. Results obtained from the investigation showed that dipping was a more effective smoothing method than cold vapour smoothing, although parts were adequately smoothed using both techniques. It was also found that in-plane specimens could withstand higher stress values than interlaminar specimens – 28MPa compared with 18.8MPa, and were more ductile as they withstood greater elongation before fracturing. There was, however, no significant difference between strength data of treated and untreated specimens – for both smoothing methods. ABS parts can therefore be smoothed to improve their surface finish without altering their strength properties to a large degree.en_US
dc.identifier.apacitationPearse, A. (2018). <i>Chemical Smoothing of 3D Printed ABS</i>. (). ,Engineering and the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/30562en_ZA
dc.identifier.chicagocitationPearse, Andrea. <i>"Chemical Smoothing of 3D Printed ABS."</i> ., ,Engineering and the Built Environment ,Department of Mechanical Engineering, 2018. http://hdl.handle.net/11427/30562en_ZA
dc.identifier.citationPearse, A. 2018. Chemical Smoothing of 3D Printed ABS.en_ZA
dc.identifier.risTY - Thesis / Dissertation AU - Pearse, Andrea AB - This report investigates the characterization of 3D printed materials in order to improve design guidelines and material properties of this relatively new manufacturing method – focussing on the requirements of surface finish and strength. The effects of chemical exposure to parts produced through Fused Deposition Modelling is therefore examined, regarding the ability of treatments to improve the surface finish of parts as well as their effect on the tensile properties of parts. Parts were additively manufactured through the process of FDM using the filament material acrylonitrile-butadiene-styrene (ABS). Parts were printed both flat and upright so that in-plane as well as interlaminar tensile properties could be investigated. Chemical treatment methods included dipping in an acetone solution and acetone vapour smoothing. Microscopic images as well as surface roughness tests examined the effect of these smoothing methods on the surface finish of each specimen and average roughness values were compared before and after smoothing. Lastly, the tensile properties of each specimen were investigated through elongation until fracture within a Zwick tensile tester. Strain readings were obtained from an extensometer as well as Digital Image Correlation and these differing results were compared. The strength data of treated and untreated specimens, in both testing directions were also compared. Results obtained from the investigation showed that dipping was a more effective smoothing method than cold vapour smoothing, although parts were adequately smoothed using both techniques. It was also found that in-plane specimens could withstand higher stress values than interlaminar specimens – 28MPa compared with 18.8MPa, and were more ductile as they withstood greater elongation before fracturing. There was, however, no significant difference between strength data of treated and untreated specimens – for both smoothing methods. ABS parts can therefore be smoothed to improve their surface finish without altering their strength properties to a large degree. DA - 2018 DB - OpenUCT DP - University of Cape Town KW - 3D Printing KW - Material Science LK - https://open.uct.ac.za PY - 2018 T1 - Chemical Smoothing of 3D Printed ABS TI - Chemical Smoothing of 3D Printed ABS UR - http://hdl.handle.net/11427/30562 ER -en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/30562
dc.identifier.vancouvercitationPearse A. Chemical Smoothing of 3D Printed ABS. []. ,Engineering and the Built Environment ,Department of Mechanical Engineering, 2018 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/30562en_ZA
dc.language.isoenen_US
dc.publisher.departmentDepartment of Mechanical Engineeringen_US
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.subject3D Printingen_US
dc.subjectMaterial Scienceen_US
dc.titleChemical Smoothing of 3D Printed ABSen_US
dc.typeMasters Thesis
dc.type.qualificationlevelMasters
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