Abstract

With the increase in production final parts by Additive Manufacturing, the study of the surface finish and dimensional accuracy become critical, in order to determine if it is possible to avoid costly and time-consuming post-production, especially when using Fused deposition Modelling of Polymers. This is especially true when the goal is functional parts, where the surface quality and dimensional accuracy may preclude the use of FDM. With that in mind a study was performed to evaluate the surface finish and dimensional deviations of FDM parts, when considering multiple processing parameters, by way of a design of experiments coupled with response surface methodology. The results showed that the critical parameters were face orientation, layer height and printing speed, and equations predicting the surface finish and dimensional accuracy were obtained, with further experimental results validating the equations. With these equations we propose guidelines for manufacturing part by FDM when surface finish and/or dimensional accuracy is of importance, so that a designer knows what changes can be made to a part and what precautions must be taken when printing said part, in order to comply with a specified surface finish/dimensional tolerance.
Original languageEnglish
Pages (from-to)491-495
JournalProcedia CIRP
Volume84
Issue numberSI
DOIs
Publication statusPublished - 2019
Event29th CIRP Design Conference 2019 - Póvoa de Varzim, Portugal
Duration: 8 May 201910 May 2019

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Frequency division multiplexing
Geometry
Printing
3D printers
Design of experiments
Surface properties
Polymers
Processing

Keywords

  • Surface Finish
  • Dimensional Tolerances
  • Fused Deposition Modelling (FDM)
  • Design of Experiments (DoE)
  • Design for Additive Manufacturing (DfAM)

Cite this

@article{eece7bd40e0d45b1a2879ad10c1ef6d1,
title = "Design for AM: Contributions from surface finish, part geometry and part positioning",
abstract = "With the increase in production final parts by Additive Manufacturing, the study of the surface finish and dimensional accuracy become critical, in order to determine if it is possible to avoid costly and time-consuming post-production, especially when using Fused deposition Modelling of Polymers. This is especially true when the goal is functional parts, where the surface quality and dimensional accuracy may preclude the use of FDM. With that in mind a study was performed to evaluate the surface finish and dimensional deviations of FDM parts, when considering multiple processing parameters, by way of a design of experiments coupled with response surface methodology. The results showed that the critical parameters were face orientation, layer height and printing speed, and equations predicting the surface finish and dimensional accuracy were obtained, with further experimental results validating the equations. With these equations we propose guidelines for manufacturing part by FDM when surface finish and/or dimensional accuracy is of importance, so that a designer knows what changes can be made to a part and what precautions must be taken when printing said part, in order to comply with a specified surface finish/dimensional tolerance.",
keywords = "Surface Finish, Dimensional Tolerances, Fused Deposition Modelling (FDM), Design of Experiments (DoE), Design for Additive Manufacturing (DfAM)",
author = "A. Castel{\~a}o and Soares, {Bruno Alexandre Rodrigues Sim{\~o}es} and Machado, {Carla Maria Moreira} and Marco Leite and Mour{\~a}o, {Ant{\'o}nio Jos{\'e} Freire}",
note = "This work was supported by FCT, through UNIDEMI, project UID/EMS/00667/2019.",
year = "2019",
doi = "10.1016/j.procir.2019.04.247",
language = "English",
volume = "84",
pages = "491--495",
journal = "Procedia CIRP",
issn = "2212-8271",
publisher = "Elsevier",
number = "SI",

}

TY - JOUR

T1 - Design for AM: Contributions from surface finish, part geometry and part positioning

AU - Castelão, A.

AU - Soares, Bruno Alexandre Rodrigues Simões

AU - Machado, Carla Maria Moreira

AU - Leite, Marco

AU - Mourão, António José Freire

N1 - This work was supported by FCT, through UNIDEMI, project UID/EMS/00667/2019.

PY - 2019

Y1 - 2019

N2 - With the increase in production final parts by Additive Manufacturing, the study of the surface finish and dimensional accuracy become critical, in order to determine if it is possible to avoid costly and time-consuming post-production, especially when using Fused deposition Modelling of Polymers. This is especially true when the goal is functional parts, where the surface quality and dimensional accuracy may preclude the use of FDM. With that in mind a study was performed to evaluate the surface finish and dimensional deviations of FDM parts, when considering multiple processing parameters, by way of a design of experiments coupled with response surface methodology. The results showed that the critical parameters were face orientation, layer height and printing speed, and equations predicting the surface finish and dimensional accuracy were obtained, with further experimental results validating the equations. With these equations we propose guidelines for manufacturing part by FDM when surface finish and/or dimensional accuracy is of importance, so that a designer knows what changes can be made to a part and what precautions must be taken when printing said part, in order to comply with a specified surface finish/dimensional tolerance.

AB - With the increase in production final parts by Additive Manufacturing, the study of the surface finish and dimensional accuracy become critical, in order to determine if it is possible to avoid costly and time-consuming post-production, especially when using Fused deposition Modelling of Polymers. This is especially true when the goal is functional parts, where the surface quality and dimensional accuracy may preclude the use of FDM. With that in mind a study was performed to evaluate the surface finish and dimensional deviations of FDM parts, when considering multiple processing parameters, by way of a design of experiments coupled with response surface methodology. The results showed that the critical parameters were face orientation, layer height and printing speed, and equations predicting the surface finish and dimensional accuracy were obtained, with further experimental results validating the equations. With these equations we propose guidelines for manufacturing part by FDM when surface finish and/or dimensional accuracy is of importance, so that a designer knows what changes can be made to a part and what precautions must be taken when printing said part, in order to comply with a specified surface finish/dimensional tolerance.

KW - Surface Finish

KW - Dimensional Tolerances

KW - Fused Deposition Modelling (FDM)

KW - Design of Experiments (DoE)

KW - Design for Additive Manufacturing (DfAM)

U2 - 10.1016/j.procir.2019.04.247

DO - 10.1016/j.procir.2019.04.247

M3 - Conference article

VL - 84

SP - 491

EP - 495

JO - Procedia CIRP

JF - Procedia CIRP

SN - 2212-8271

IS - SI

ER -