Fatigue performance of fused filament fabrication PLA specimens

Gómez-Gras, Giovanni; Jerez-Mesa, Ramón; Travieso-Rodríguez, J. Antonio; Llumà, Jordi

doi:10.1016/j.matdes.2017.11.072

Cited by 189 publications

(112 citation statements)

References 39 publications

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“…It transforms the manufacturing method from analogical to digital [1]. The manufacturing process is based on the addition of material combined with a contribution of energy to create a solid, layer by layer.…”

Section: Introductionmentioning

confidence: 99%

Multi Jet Fusion PA12 Manufacturing Parameters for Watertightness, Strength and Tolerances

et al. 2018

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The aim of this paper is to explore the watertightness behaviour for high pressure applications using Multi Jet Fusion technology and polyamide 12 as a material. We report an efficient solution for manufacturing functional prototypes and final parts for water pressure applications and provide manufacturing rules for engineers in the pressurized product development process for up to 10 MPa of nominal pressure. The research findings show manufacturers the possibility of using additive manufacturing as an alternative to traditional manufacturing. Water leakage was studied using different printing orientations and wall thicknesses for a range of pressure values. An industrial ball valve was printed and validated with the ISO 9393 standard as also meeting tolerance requirements. This paper is a pioneering approach to the additive manufacturing of high-performance fluid handling components. This approach solves the problem of leakage caused by porosity in additive manufacturing technologies.

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Section: Introductionmentioning

confidence: 99%

Multi Jet Fusion PA12 Manufacturing Parameters for Watertightness, Strength and Tolerances

et al. 2018

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“…Further equal size of nozzle and thickness of sample resulted in poor fatigue life due to improper deposition of layers. Thermal effect in fracture was found insignificant for the tested samples [10].…”

Section: Introductionmentioning

confidence: 77%

On flexural and pull out properties of 3D printed PLA based hybrid composite matrix

Kumar

Singh

et al. 2020

Mater. Res. Express

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Fused deposition modelling (FDM) has been widely explored for number of commercially available virgin thermoplastics (such as: poly lactic acid (PLA), nylon, acrylonitrile butadiene styrene (ABS) etc), thermoplastic based composites and printing conditions. But hitherto little has been reported on flexural and pull-out properties of 3D printed PLA based hybrid composite matrix (having magnetostrictive properties) especially in structural engineering applications. In the present work an effort has been made for 3D printing of PLA hybrid composite matrix (having magnetic characteristics) to investigate the flexural and pull out properties. The photo micro-graphic analysis and Shore D hardness has been performed on the printed samples and multifactor optimization tool has been used for optimizing the printing conditions. From multifactor optimization viewpoint it has been ascertained that infill density 100%; infill angle 45°; and infill speed 90 mm s −1 are the best printing conditions. Further from morphological testing it has been observed that mechanical properties (flexural and pull out) are dependent upon the hardness, surface porosity and surface roughness (Ra). The creo structural analysis supported with photomicrographs have been performed on the samples prepared at best setting of input parameters and it has been found that strain increases downward along the thickness and is maximum at lowest layer due to which the failure starts from the base line in flexural testing.

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“…Slight differences were observed when contrasting elastic behaviors for different part build orientations. Although XZ showed the highest Young's modulus ( Table 5, Figure 2), this orientation was clearly penalized in the plasticity domain, since, in a uniaxial test, the load is transmitted through the interlayer material (see layer configuration in Figure 1), where the internal cohesion force was proven to be the lowest among the specimens tested with other FDM materials [21,22]. In contrast, the YZ orientation reported the highest yield and ultimate strength (Table 5, Figure 2), because more filaments, in this case, contours, were oriented in the direction in which the specimen was being pulled.…”

Section: Elastic and Viscous Effects In Fdm Pei Parts Are Dictated Bymentioning

confidence: 99%

“…The torsion behavior of ABS parts when modifying the air gap, raster angle and width, or printing temperature was addressed by Rodríguez et al [20]. Puigoriol-Forcada et al [21] and Gomez-Gras et al [22] studied the cyclic fatigue performance of Polylactic Acid (PLA) and PC specimens when varying the part build orientation.…”

Section: Introductionmentioning

confidence: 99%

Time-Dependent Mechanical Properties in Polyetherimide 3D-Printed Parts Are Dictated by Isotropic Performance Being Accurately Predicted by the Generalized Time Hardening Model

et al. 2020

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The Fused-Deposition Modelling (FDM) technique has transformed the manufacturing discipline by simplifying operational processes and costs associated with conventional technologies, with polymeric materials being indispensable for the development of this technology. A lack of quantification of viscoelastic/plastic behavior has been noted when addressing FDM parts with Polyetherimide (PEI), which is currently being investigated as a potential material to produce functional end-products for the aerospace and health industry. Primary and secondary creep along with stress relaxation tests have been conducted on FDM PEI specimens by applying stresses from 10 to 40 MPa for 100 to 1000 min. Specimens were 3D printed by varying the part build orientation, namely XY, YZ, and XZ. Creep results were fitted to the Generalized Time Hardening equation (GTH), and then this model was used to predict stress relaxation behavior. FDM PEI parts presented an isotropic creep and stress relaxation performance. The GTH model was proven to have a significant capacity to fit viscoelastic/plastic performances for each single build orientation (r > 0.907, p < 0.001), as well as a tight prediction of the stress relaxation behavior (r > 0.998, p < 0.001). Averaged-orientation coefficients for GTH were also closely correlated with experimental creep data (r > 0.958, p < 0.001) and relaxation results data (r > 0.999, p < 0.001). FDM PEI parts showed an isotropic time-dependent behavior, which contrasts with previous publications arguing the significant effect of part build orientation on the mechanical properties of FDM parts. These findings are strengthened by the high correlation obtained between the experimental data and the averaged-coefficient GTH model, which has been proven to be a reliable tool to predict time-dependent performance in FDM parts.

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Fatigue performance of fused filament fabrication PLA specimens

Cited by 189 publications

References 39 publications

Multi Jet Fusion PA12 Manufacturing Parameters for Watertightness, Strength and Tolerances

Multi Jet Fusion PA12 Manufacturing Parameters for Watertightness, Strength and Tolerances

On flexural and pull out properties of 3D printed PLA based hybrid composite matrix

Time-Dependent Mechanical Properties in Polyetherimide 3D-Printed Parts Are Dictated by Isotropic Performance Being Accurately Predicted by the Generalized Time Hardening Model

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