Experimental investigation of effects of build parameters on flexural properties in fused deposition modelling parts

Motaparti, Krishna P.; Taylor, Gregory; Leu, Ming C.; Chandrashekhara, K.; Castle, James; Matlack, Mike

doi:10.1080/17452759.2017.1314117

Cited by 59 publications

(34 citation statements)

References 10 publications

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“…Based on their investigation, they outlined that low printing speed and low layer thickness resulted in the highest tensile and flexural strength of the material. Motaparti et al [ 14 ] also investigated the effect of parameters, build direction, raster angle and negative air gap on the flexural properties of ULTEM 9085 produced by the FDM technique with solid- and sparse-build styles. Their investigation revealed that the vertical (edge) build direction could result in higher flexural yield strength than its horizontal counterpart.…”

Section: Review Of Previous Workmentioning

confidence: 99%

Investigating Effects of Fused-Deposition Modeling (FDM) Processing Parameters on Flexural Properties of ULTEM 9085 using Designed Experiment

2018

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Fused-deposition modeling (FDM), one of the additive manufacturing (AM) technologies, is an advanced digital manufacturing technique that produces parts by heating, extruding and depositing filaments of thermoplastic polymers. The properties of FDM-produced parts apparently depend on the processing parameters. These processing parameters have conflicting advantages that need to be investigated. This article focuses on an investigation into the effect of these parameters on the flexural properties of FDM-produced parts. The investigation is carried out on high-performance ULTEM 9085 material, as this material is relatively new and has potential application in the aerospace, military and automotive industries. Five parameters: air gap, raster width, raster angle, contour number, and contour width, with a full factorial design of the experiment, are considered for the investigation. From the investigation, it is revealed that raster angle and raster width have the greatest effect on the flexural properties of the material. The optimal levels of the process parameters achieved are: air gap of 0.000 mm, raster width of 0.7814 mm, raster angle of 0°, contour number of 5, and contour width of 0.7814 mm, leading to a flexural strength of 127 MPa, a flexural modulus of 2400 MPa, and 0.081 flexural strain.

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Section: Review Of Previous Workmentioning

confidence: 99%

Investigating Effects of Fused-Deposition Modeling (FDM) Processing Parameters on Flexural Properties of ULTEM 9085 using Designed Experiment

2018

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“…The lower performances, compared to injection molded specimens, were the result of the voids in FDM printed parts between fused filaments. Motaparti et al [ 4 ] recently showed that the strength of a thermoplastic interface within FDM part is directly proportional to the intermolecular diffusion across the interface between the fused filaments. The relevance of bond quality between adjacent filaments depends on printing parameters, but, also, on the melt viscosity of the polymer used for the filaments.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Ultem 9085 Used in Fused Deposition Modelling (FDM) with Polytherimide Blends

et al. 2018

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Polyetherimide (PEI) blends modified by either polycarbonate (PC) or polyethylene terephthalate glycol-modified (PETG) were prepared. The latter modifier (PETG) was an industrial grade widely used for fused deposition modelling (FDM) printing. PEI blends were compared to Ultem 9085, which is the standard PEI grade for FDM printing in advanced applications. All the blends were thoroughly characterized in terms of their rheological, morphological, thermomechanical and tensile properties. Ultem 9085 showed improved rheology for processing over standard PEI. PEI/PC blends with 10 wt % of modifier developed here closely matched the viscosity behavior of Ultem 9085. On the other hand, the blends with low PC content (i.e., less than 20 wt %) outperformed Ultem 9085 in terms of thermal and tensile properties. When PETG was added, similar tensile properties to Ultem 9085 were found. The immiscibility for PC contents higher than 20 wt % deteriorated the tensile properties, making it less attractive for applications, although melt viscosity decreased further for increasing PC contents.

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“…A poor balance of these extrusion parameters can cause flaws within layer adhesion and lead to voids in the printed Fused filament fabrication (FFF), a form of Additive Manufacture (AM), is in common use in many research and industrial areas, mainly for its prototyping functionalities. This method of prototyping is carried out by extruding filaments of polymer material onto a build plate in order to build up a 3D object layer-by-layer [1,2,3,4].The material used is a thermoplastic polymer, which is fed as a solid filament into a heated nozzle where it melts and flows as a polymer melt onto the preceding layer. Here it cools rapidly and solidifies to form the new solid layer.…”

mentioning

confidence: 99%

A method for predicting geometric characteristics of polymer deposition during fused-filament-fabrication

Hebda

McIlroy

Whiteside

et al. 2019

Additive Manufacturing

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In recent years 3D printing has gained popularity amongst industry professionals and hobbyists alike, with many new types of Fused Filament Fabrication (FFF) apparatus types becoming available on the market. A massively overlooked component of FFF is the requirement for a simple method to calculate the geometries of polymer depositions extruded during the FFF process. Manufacturers have so far achieved adequate methods to calculate tool-paths through so called slicer software packages which calculate the required velocities of extrusion from prior knowledge and data. Presented here is a method for obtaining a series of equations for predicting height, width and cross-sectional area values for given processing parameters within the FFF process for initial laydown on to a glass surface.

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Experimental investigation of effects of build parameters on flexural properties in fused deposition modelling parts

Cited by 59 publications

References 10 publications

Investigating Effects of Fused-Deposition Modeling (FDM) Processing Parameters on Flexural Properties of ULTEM 9085 using Designed Experiment

Investigating Effects of Fused-Deposition Modeling (FDM) Processing Parameters on Flexural Properties of ULTEM 9085 using Designed Experiment

Comparison of Ultem 9085 Used in Fused Deposition Modelling (FDM) with Polytherimide Blends

A method for predicting geometric characteristics of polymer deposition during fused-filament-fabrication

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