Effect of the ironing process on ABS parts produced by FDM

Sardinha, Manuel; Vicente, C. M. S.; Frutuoso, Nuno; Leite, Marco; Ribeiro, A. M. R.; Reis, L.

doi:10.1002/mdp2.151

Cited by 23 publications

(15 citation statements)

References 22 publications

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“…An initial roughness measurement on a section of the print with a white light interferometer (Polytec msa-500) indicated small ridges of 40 µm at the edges of traxels. In future samples this can be reduced by using 'ironing', a posttreatment method where the heated nozzle is moved over the printed layer without extruding material [22].…”

Section: B Fabrication Resultsmentioning

confidence: 99%

Characterizing the Electrical Properties of Anisotropic, 3D-Printed Conductive Sheets for Sensor Applications

et al. 2020

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This paper introduces characterization techniques to investigate electrical properties of 3D-printed conductors. It presents the combination of a physical model to describe frequency dependent electrical properties of 3D-printed conductors; the use of infrared thermography in combination with Joule heating to characterize electrical anisotropy in 3D-printed sheets; and the use of the voltage contrast scanning electron microscopy method (VCSEM) to determine potential distributions in 3D-printed sheets. By means of lock-in thermography, infrared (IR) measurements are improved and amplitude modulation enables lock-in thermography at excitation frequencies above the thermal cut-off frequency. Measurements on sensor samples show the potential of the methods for characterizing sheet-like, conductive structures. The characterization methods allow improvement of 3D-printed sensor designs and exploit electrical properties of 3D-printed conductors.

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Section: B Fabrication Resultsmentioning

confidence: 99%

Characterizing the Electrical Properties of Anisotropic, 3D-Printed Conductive Sheets for Sensor Applications

et al. 2020

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“…Other literature investigates thermal process post printing for properties enhancement. Sardinha et al [ 22 ] explored the impact of pass the top surface of the part with the nozzle to improve surface roughness and interlayer strength. Parker et al [ 23 ] described a post processing technique using hot isostatic press various thermoplastic, including ULTEM™ 9085.…”

Section: Literature Reviewmentioning

confidence: 99%

The Effect of Annealing on Additive Manufactured ULTEM™ 9085 Mechanical Properties

Zhang

Moon

2021

Materials

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Fused filament fabrication (FFF) is increasingly adopted for direct manufacturing of end use parts in an aviation industry. However, the application of FFF technique is still restricted to manufacturing low criticality lightly loaded parts, due to poor mechanical performance. To alleviate the mechanical performance issue, thermal annealing process is frequently utilized. However, problems such as distortion issues and the need for jigs and fixtures limit the effectiveness of the thermal annealing process, especially for low volume complex FFF parts. In this research, a novel low temperature thermal annealing is proposed to address the limitations in conventional annealing. A modified orthogonal array design is applied to investigate the performance of ULTEM™ 9085 FFF coupons. Further, the coupons are annealed with specialized support structures, which are co-printed with the coupons during the manufacturing process. Once the annealing process is completed, multiscale characterizations are performed to identify the mechanical properties of the specimens. Geometrical measurement of post annealed specimens indicates an expansion in the layering direction, which indicates relief of thermal stresses. Moreover, annealed coupons show an improvement in tensile strength and reduction in strain concentration. Mesostructure and fracture surface analysis indicate an increase in ductility and enhanced coalescence. This research shows that the proposed annealing methodology can be applied to enhance the mechanical performance of FFF parts without significant distortion.

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“…Further description of FFF technology may be found e.g., in [ 13 , 14 ] and references therein. Polylactic acid (PLA) [ 15 , 16 , 17 , 18 , 19 ], acrylonitrile butadiene styrene (ABS) [ 20 , 21 , 22 , 23 , 24 ], polyethylene terephthalate (PET) [ 25 ], polyethylene terephthalate glycol (PET-G) [ 26 , 27 , 28 ], polypropylene (PP) [ 29 , 30 ], and viscoelastic thermoplastic elastomers like thermoplastic polyurethane (TPU) [ 31 , 32 ] belong to the most common thermoplastics applied in FFF technology.…”

Section: Introductionmentioning

confidence: 99%

CaCO3 Polymorphs Used as Additives in Filament Production for 3D Printing

et al. 2022

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Nowadays, additive manufacturing—also called 3D printing—represents a well-established technology in the field of the processing of various types of materials manufacturing products used in many industrial sectors. The most common type of 3D printing uses the fused filament fabrication (FFF) method, in which materials based on thermoplastics or elastomers are processed into filaments. Much effort was dedicated to improving the properties and processing of such printed filaments, and various types of inorganic and organic additives have been found to play a beneficial role. One of them, calcium carbonate (CaCO3), is standardly used as filler for the processing of polymeric materials. However, it is well-known from its different applications that CaCO3 crystals may represent particles of different morphologies and shapes that may have a crucial impact on the final properties of the resulting products. For this reason, three different synthetic polymorphs of CaCO3 (aragonite, calcite, and vaterite) and commercially available calcite powders were applied as fillers for the fabrication of polymeric filaments. Analysis of obtained data from different testing techniques has shown significant influence of filament properties depending on the type of applied CaCO3 polymorph. Aragonite particles showed a beneficial impact on the mechanical properties of produced filaments. The obtained results may help to fabricate products with enhanced properties using 3D printing FFF technology.

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Effect of the ironing process on ABS parts produced by FDM

Cited by 23 publications

References 22 publications

Characterizing the Electrical Properties of Anisotropic, 3D-Printed Conductive Sheets for Sensor Applications

Characterizing the Electrical Properties of Anisotropic, 3D-Printed Conductive Sheets for Sensor Applications

The Effect of Annealing on Additive Manufactured ULTEM™ 9085 Mechanical Properties

CaCO3 Polymorphs Used as Additives in Filament Production for 3D Printing

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