Influence of process parameters on thermal and mechanical properties of <scp>polylactic acid</scp> fabricated by fused filament fabrication

Vanaei, Hamid Reza; Shirinbayan, Mohammadali; Deligant, Michaël; Raı̈ssi, Kadour; Fitoussi, Joseph; Khelladi, Sofiane; Tcharkhtchi, Abbas

doi:10.1002/pen.25419

Cited by 69 publications

(61 citation statements)

References 28 publications

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“…The test case was built considering the values for the processing variables (Table 1) that are commonly used in the desktop 3D printer to ensure a good quality part in terms of bonding between filaments and mechanical strength. 21,[25][26][27][28]…”

Section: D Printingmentioning

confidence: 99%

Experimental study of PLA thermal behavior during fused filament fabrication

Vanaei

Shirinbayan

Costa

et al. 2020

J of Applied Polymer Sci

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Fused filament fabrication (FFF) is an additive manufacturing technique that is used to produce prototypes and a gradually more important processing route to obtain final products. Due to the layer-by-layer deposition mechanism involved, bonding between adjacent layers is controlled by the thermal energy of the material being printed, which strongly depends on the temperature development of the filaments during the deposition sequence. This study reports experimental measurements of filament temperature during deposition. These temperature profiles were compared to the predictions made by a previously developed model. The two sets of data showed good agreement, particularly concerning the occurrence of reheating peaks when new filaments are deposited onto previously deposited ones. The developed experimental technique is shown to demonstrate its sensitivity to changing operating conditions, namely platform temperature and deposition velocity. The data generated can be valuable to predict more accurately the bond quality achieved in FFF parts.

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Section: D Printingmentioning

confidence: 99%

Experimental study of PLA thermal behavior during fused filament fabrication

Vanaei

Shirinbayan

Costa

et al. 2020

J of Applied Polymer Sci

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“…In FFF, the most important materials for parts manufacturing are thermoplastic polymers [5]. Accordingly, several parameters affect the manufactured part quality [6,7], like the temperature profile of the polymer and consequently the inter-layers bonding [8][9][10]. It is therefore important to understand how the process parameters affect the evolution of filaments temperature as mentioned [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Toward the understanding of temperature effect on bonding strength, dimensions and geometry of 3D-printed parts

et al. 2020

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Fused filament fabrication (FFF), which is an additive manufacturing technique, opens alternative possibilities for complex geometries fabrication. However, its use in functional products is limited due to anisotropic strength issues. Indeed, the strength of FFF fabricated parts across successive layers in the build direction (Z direction) can be significantly lower than the strength in X-Y directions. This strength weakness has been attributed to poor bonding between printed layers. This bonding depends on the temperature of the current layer being deposited-at melting temperature (T m)-and the temperature of the previously deposited layer. It is assumed that depositing a layer at T m on a layer at temperature around crystallization temperature (T c) would enable higher material crystallinity and thus better bonding between previous and present layers. On the contrary, if the previous layer temperature is below T c , material crystallinity will be low and bonding strength weak. This paper aims at studying the significant effect of temperature difference (DT) between previous and current deposited layers temperatures on (1) inter-layers bonding strength improvement and (2) part dimensions, geometry and structure stability. A 23% increase in the inter-layers bonding strength for previous layer temperature slightly higher than T c reported here confirms the above assumption and offers a first solution toward the increase in inter-layers bonding strength in FFF.

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“…[ 1–3 ] Printing parameters such as nozzle temperature, layer thickness, building orientation, printing speed, infill density, and chamber temperature are critical factors that affect the mechanical, physical, and chemical properties of printed materials. [ 4–7 ]…”

Section: Introductionmentioning

confidence: 99%

Effect of processing parameters on flexural properties of 3D‐printed polyetherketoneketone using fused deposition modeling

Cheng

Liu

et al. 2020

Polymer Engineering & Sci

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Polyetherketoneketone (PEKK) is an engineering plastic with ultrahigh mechanical performance and has attracted considerable attention in the medical and technical fields. Printing parameters during fused deposition modeling (FDM) for PEKK have a significant impact on final part quality. In this study, a relationship between the process parameters and flexural properties of PEKK was investigated by conducting three‐point bending tests, and scanning electron microscopy was employed to analyze the microstructure of fracture surfaces. Nozzle temperature, layer thickness, and infill density affected flexural properties by changing the porosity and interlayer bonding strength. Interlayer separation is the main failure mode of the upright orientation samples, while intralayer failure is likely to occur in the on‐edge orientation samples. The flexural properties of FDM‐printed PEKK under optimum parameters are comparable to those of mandibular bones, indicating that PEKK is a potential candidate for repairing mandibular defects. The results highlighted in this study are fundamental to the optimal design of complex ultralight, highly efficient structures.

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Influence of process parameters on thermal and mechanical properties of polylactic acid fabricated by fused filament fabrication

Cited by 69 publications

References 28 publications

Experimental study of PLA thermal behavior during fused filament fabrication

Experimental study of PLA thermal behavior during fused filament fabrication

Toward the understanding of temperature effect on bonding strength, dimensions and geometry of 3D-printed parts

Effect of processing parameters on flexural properties of 3D‐printed polyetherketoneketone using fused deposition modeling

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