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

Morales-Planas, Sergio; Minguella-Canela, Joaquim; Llumà, Jordi; Travieso-Rodríguez, J. Antonio; García-Granada, A. A.

doi:10.3390/ma11081472

Cited by 69 publications

(53 citation statements)

References 21 publications

(31 reference statements)

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“…On the other hand, the force applied by the loading rollers will be measured with a load cell. The objective of data processing is to create the stress-strain curve of the specimens [19].…”

Section: Methodsmentioning

confidence: 99%

Mechanical Properties of 3D-Printing Polylactic Acid Parts Subjected to Bending Stress and Fatigue Testing

Travieso-Rodríguez

Jerez-Mesa

Llumà

et al. 2019

Preprint

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This paper aims to analyse the mechanical properties response of polylactic acid (PLA) parts manufactured through fused filament fabrication. The influence of six manufacturing factors (layer height, filament width, fill density, layer orientation, printing velocity, and infill pattern) on the flexural resistance of PLA specimens is studied through an L27 Taguchi experimental array. Different geometries have been tested on a four-point bending machine and on a rotating bending machine. From the first experimental phase, an optimal set of parameters deriving in the highest flexural resistance have been determined. Results show that layer orientation is the most influential parameter, followed by layer height, filament width, and printing velocity, whereas the fill density and infill pattern show no significant influence. Finally, the fatigue fracture behaviour is evaluated and compared with previous studies results, to present a comprehensive study of the mechanical properties of the material under different kind of solicitations.

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“…On the other hand, the force applied by the loading rollers will be measured with a load cell. The objective of data processing is to create the stress-strain curve of the specimens [19].…”

Section: Methodsmentioning

confidence: 99%

Mechanical Properties of 3D-Printing Polylactic Acid Parts Subjected to Bending Stress and Fatigue Testing

Travieso-Rodríguez

Jerez-Mesa

Llumà

et al. 2019

Preprint

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“…The combination of a rectilinear pattern in a 100% infill shows the higher tensile strength, with a value of 36. 4 , with a difference of less than 1% from raw ABS material.…”

Section: Introductionmentioning

confidence: 91%

“…fan speed), and printing velocity [1,2]. On the other hand, there are examples of design parameters include building orientation, raster angle, layer thickness, and infill percentage [3,4]. samples by performing tensile, three-point bending, and impact tests.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Tensile Properties between Fused Filament Fabricated and Injection-Molded Wood-PLA Composite Parts

Zandi¹,

Jerez-Mesa²,

Llumà³

et al. 2020

Preprint

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The present study evaluates the manufacturing parameters effects on the tensile properties of material composed by polylactic acid (PLA) with wood fibers known as Timberfill. The specimens were built through fused filament fabrication (FFF). The influence of four printing parameters (Layer height, Fill density, Printing velocity, and Orientation) are considered through a L27 Taguchi orthogonal array in order to reduce experimental runs. Tensile test is applied to obtain the response variable used as output results to perform the ANOVA calculations. Fill density is the most influential parameter on the tensile strength, followed by building orientation and layer height, whereas the printing velocity shows no significant influence. The optimal set of parameters and levels is found, being 75% fill density, 0○Z-axis orientation, 0.4 mm layer height, and 40 mm/s velocity as the best combination. Applying this combination showed 9.37 MPa in maximum tension. Lastly, five solid Timberfill specimens manufactured via injection molding technology were also tested and the results compared to the printed samples. The values of the elastic modulus, elastic limit, and maximum tension of the injected samples were almost twofold of those were obtained for the FFF samples, but the maximum elongation of injected specimens was fell sharply.

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“…Lastly, IR energy source passes over the powder on the build pad across a line based path and sinters the areas where the fusing agent was deposited and leaves the rest of the powder unaltered. The process repeats until all parts are completed [5] Thirty million drops per second can be printed by these print heads that provide to obtain highly accurate dimensional precision compared with other technologies [6]. The geometry is built up in powder so there is no need to support structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Orientation Angle on Surface Quality and Dimensional Accuracy of Functional Parts Manufactured by Multi Jet Fusion Technology

Sagbas

2020

European Mechanical Science

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Multi Jet Fusion is one the new Additive Manufacturing method which belongs to powder bed fusion technology class and used for additive manufacturing of polymer based parts. There are restricted number of research about this developing technology. In this study, it is aimed to investigate the effect of build orientation angle on surface quality and dimensional accuracy of the printed bolts as functional parts. Samples were manufactured in two different build orientations such as 90 and 45 degrees. Surface quality and dimensional properties of the bolt tooth such as tooth height, tooth angle and distance between two teeth were inspected by optical and tactile precision measurement systems. The results were evaluated by comparing the measurement data with each other for two different sample groups and also with nominal design data. For determining the significance of the difference between two sample groups and nominal data the results were also evaluated by Student's t-test statistical analysis. The results revealed that, orientation angle had significant effect on surface roughness, tooth height and tooth angle but it didn't affect the distance between two teeth.

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

Cited by 69 publications

References 21 publications

Mechanical Properties of 3D-Printing Polylactic Acid Parts Subjected to Bending Stress and Fatigue Testing

Mechanical Properties of 3D-Printing Polylactic Acid Parts Subjected to Bending Stress and Fatigue Testing

Comparative Study of Tensile Properties between Fused Filament Fabricated and Injection-Molded Wood-PLA Composite Parts

Effect of Orientation Angle on Surface Quality and Dimensional Accuracy of Functional Parts Manufactured by Multi Jet Fusion Technology

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