Study of samples geometry to analyze mechanical properties in Fused Deposition Modeling process (FDM)

Lluch-Cerezo, Joaquín; Benavente, Rut; Meseguer, María Desamparados; Gutiérrez, S.C.

doi:10.1016/j.promfg.2019.10.012

Cited by 18 publications

(17 citation statements)

References 10 publications

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“…Such methodology is very useful when the acquired digital data by scanning methods need to be re-processed in the CAD environment in order to get a physical model also with other techniques [23][24][25]. The obtained results are in agreement and consistent with the study made by other authors who relate under some conditions the shape, the geometry, the staircase and waviness with stress concentration [26][27][28]. T Integrating layer by layer manufacturing for the realization of polymer complex geometr...…”

Section: R Realization Of the Ph Ealization Of The Phy Ysical Model B Sical Model By Digital Scanned Data Y Digital Scanned Datasupporting

confidence: 84%

Integrating layer by layer manufacturing for the realization of polymer complex geometries with scanning devices: re-building by digital data

Bruni¹,

Greco²,

Mancia³

et al. 2021

Esaform 2021

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The additive manufacturing technique represents a way to realize components or prototypes without the use of conventional tools.The research presented aims at proposing a methodology based on the use of three different techniques that are the poly-jet 3D using UV photo-polymerization, the FDM of polyamide materials and the FDM of PLA materials. The original data were used at the beginning with the first technique in order to detect the shape and the geometry by a 3D SCANNER. The objective was the re-building of a model shape made using a procedure in which the input file characteristics were updated starting from those got by the scanning device in order to respect the original requirements defined in the computer aided environment. It was found that the physical re-building of an object is depending the characteristics of the input file that needs to be digitally processed in order to get the desired shape and geometry. In that way also FDM using PLA and polyamide materials can be utilized to get components or prototypes from scanned digital data. The results are reported in details.

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Section: R Realization Of the Ph Ealization Of The Phy Ysical Model B Sical Model By Digital Scanned Data Y Digital Scanned Datasupporting

confidence: 84%

Integrating layer by layer manufacturing for the realization of polymer complex geometries with scanning devices: re-building by digital data

Bruni¹,

Greco²,

Mancia³

et al. 2021

Esaform 2021

View full text Add to dashboard Cite

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Section: Methodsmentioning

confidence: 99%

“…The samples were manufactured according to standard ISO 179-1:2010 [34] Type 1 (Figure 1) due to its external geometrical simplicity, which allowed us to print all building lines in a single direction and avoid stress concentration [16]. ABS samples were manufactured using an Ultimaker 3 Extended printer (Ultimaker B.V., Gerdelmalsen, The Netherlands) equipped with a 0.4 mm-diameter nozzle.…”

Section: Test Specimens Design and Manufacturingmentioning

confidence: 99%

“…In order to improve the quality, some works have developed a control system for the most common additive manufacturing processes and materials, including dimensional parts control [ 14 ]. Other studies improve the properties evaluating the effect of infill parameters [ 15 , 16 ], such as layer thickness, raster direction and layup order. These parameters have a significant effect on the mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

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Effect of a Powder Mould in the Post-Process Thermal Treatment of ABS Parts Manufactured with FDM Technology

et al. 2021

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The post-process thermal treatment of thermoplastics improves their mechanical properties, but causes deformations in parts, making them unusable. This work proposes a powder mould to prevent dimensional part deformation and studies the influence of line building direction in part deformations in a post-process thermal treatment of 3D printed polymers. Two sets of ABS (acrylonitrile butadiene styrene) test samples manufactured by fused deposition modelling (FDM) in six different raster directions have been treated and evaluated. One set has been packed with a ceramic powder mould during thermal treatment to evaluate deformations and mould effectiveness. Thermogravimetric tests have been carried out on ABS samples, concluding that the thermal treatment of the samples does not cause degradations in the polymeric material. An analysis of variance (ANOVA) was performed to study internal building geometry and mould influence on part deformation after the thermal treatment. It can be concluded that powder mould considerably reduces dimensional deformations during the thermal treatment process, with length being the most affected dimension for deformation. Attending to the length, mould effectiveness is greater than 80% in comparison to non-usage of moulding, reaching 90% when the building lines are in the same direction as the main part.

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“…Another interesting effect was the positioning of the sample in the test machine: in the experimental results by (Kozior and Kundera, 2017), the influence of location and direction of the models in the virtual platform on their selected mechanical properties (such as Young modulus and stress relaxation) during uniaxial compression tests was discussed. Manufacturing parameters such as wall thickness, orientation of building wall lines and orientation of infill pattern were studied in (Lluch-Cerezo et al, 2019) for FDM printed PLA elements. Wittbrodt and Peare (2015) investigated tensile strengths of FDM printed PLA elements in various colors.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Comparison for Compression of PLA Specimens Printed in In-Plane and Out-of-Plane Directions

Brischetto¹,

Torre²

2020

American Journal of Engineering and Applied Sciences

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The present work proposes an experimental comparison between the in-plane and out-of-plane compressive behaviors of 3D printed PolyLactic Acid (PLA) specimens. These specimens are produced via the Fused Deposition Modeling (FDM) technique by using two different printing directions: the first printing direction in the xz plane allows experimental compression tests in the out-of-plane direction; the second printing direction in the xy plane allows experimental compression tests in the in-plane direction. The specimens are more rigid in the out-of-plane direction than in the in-plane direction. In the first case, a bigger linear compressive Young modulus has been found and both maximum stress and proportional limit stress were determined. In the second case, the linear compressive Young modulus is smaller and the specimens are less rigid but at the same time more resistant: in fact, no maximum stress and proportional limit stress have been obtained because the test machine has reached the maximum applicable load. This research demonstrates as the compressive behavior of 3D FDM printed polymeric elements depends on the printing and test directions and this feature is fundamental when such elements will be used for structural applications. The experimental tests performed in the present paper are accompanied by statistical and capability analyses for the dimensional parameters and for the mechanical properties in order to also evaluate the stability of the production process and the validity ranges for the mechanical characteristics.

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Study of samples geometry to analyze mechanical properties in Fused Deposition Modeling process (FDM)

Cited by 18 publications

References 10 publications

Integrating layer by layer manufacturing for the realization of polymer complex geometries with scanning devices: re-building by digital data

Integrating layer by layer manufacturing for the realization of polymer complex geometries with scanning devices: re-building by digital data

Effect of a Powder Mould in the Post-Process Thermal Treatment of ABS Parts Manufactured with FDM Technology

An Experimental Comparison for Compression of PLA Specimens Printed in In-Plane and Out-of-Plane Directions

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