Research on the Influence of the Load Direction and the Cross-Section Shape on the Young's Modulus of Elements Produced by the Fused Deposition Modeling Method

Bembenek, Michał; Kowalski, Łukasz; Pawlik, Jan; Bajda, Szymon

doi:10.1007/s11665-022-06848-8

Cited by 4 publications

(4 citation statements)

References 26 publications

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“…The filament is pushed into the liquefier through a mechanism, heated to a molten state, extruded with a nozzle, then adhered to the formed layer. When the printing of one layer has been completed, the z-axis moves a certain distance equal to layer thickness in order to print the next layer, until the formation of the whole part is completed [7,8]. The principle of AM technology is shown in Figure 1.…”

Section: Fused Deposition Modeling (Fdm)mentioning

confidence: 99%

An Additive Manufacturing Direct Slicing Algorithm Based on a STEP Model

et al. 2022

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The Standard Template Library (STL) file is the most common data format for the description of an additive manufacturing (AM) geometric model, but it has some disadvantages, such as large errors of the geometric model description, the easy loss of topology information, data duplication, large file sizes, and so on. Aiming at these problems, a direct slicing algorithm based on a Standard for the Exchange of Product Model Data (STEP) model was proposed. For the parts composed of basic types of surfaces such as boundary curves, spherical surfaces and cylindrical surfaces, the traditional geometric method was used to calculate the intersection. For the parts with complex surfaces, the three-dimensional models were described based on Non-Uniform Rational B-Spline (NURBS) surfaces. The NURBS surfaces were layered using a discrete tracking algorithm, the tracking starting point was determined, the intersection line between the tangent plane and each NURBS sub-surface was obtained, and the closed layer contour was formed. Finally, the slicing simulations and printing experiments of solid parts were carried out using the direct slicing algorithm based on the STEP model. It was shown that the dimensional accuracy and surface quality of the printed parts from this algorithm had been significantly improved.

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Section: Fused Deposition Modeling (Fdm)mentioning

confidence: 99%

An Additive Manufacturing Direct Slicing Algorithm Based on a STEP Model

et al. 2022

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“…It was shown that an appropriate choice of these parameters influences increasing the impact strength of the printed sample [19]. The topic of compressive Young's modulus of PLA additively manufactured parts was discussed in [20], where authors concluded that test load orientation on cubical 3D printed specimen affects analyzed parameters differently, depending on the type of PLA material used, while using different cross-section shapes influences the test results minimally.…”

Section: Introductionmentioning

confidence: 99%

Research on the Influence of Processing Parameters on the Specific Tensile Strength of FDM Additive Manufactured PET-G and PLA Materials

2022

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Fused deposition modeling (FDM) is one of the most accessible additive manufacturing (AM) technologies for processing polymeric materials. It allows processing most of thermoplastic polymers, with polyethylene terephthalate glycol-modified (PET-G) and polylactic acid (PLA). AM parts tend to display anisotropic behavior because of layer-by-layer fabrication and various technological parameters that can be set for 3D print, so it is hard to predict and analyze how the manufactured parts would behave under load. This research presents results of classic tensile strength tests performed on 57 PET-G specimens and 57 PLA specimens manufactured with varying technological parameters such as: printing temperature, print orientation, layer height, and infill percentage. Afterward, a comparative analysis is performed, proposing specific tensile strength (STS) as a benchmark to determine how 3D printed parts strength is varying due to beforementioned parameters, eliminating bias induced by varying weight of specimens. The biggest relative increase of UTS and the biggest relative decrease of STS was noted for variable infill percentage (increasing infill—PLA: 37.27% UTS increase and 30.41% STS decrease; PET-G: 24.42% UTS increase and 37.69% STS decrease). The biggest relative increase of STS between examined parameters was observed for both materials as the printing temperature was increased (27.53% for PLA and 12.69% for PET-G). Similar trends in STS changes were observed for both materials. Obtained data shows which FDM AM parameters are the most important to obtain the biggest UTS of manufactured parts, and those do not overlap with parameters needed to obtain optimal strength-to-weight ratio.

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“…Calculation of thin-walled layered shells under radial load str given in works [ 47 , 48 ], and axial loads in [ 49 , 50 ]. The influence of the direction of loading and the shape of the cross-section on the Young’s modulus of the samples was established [ 51 ], as well as the influence of applications and material properties [ 52 , 53 ].…”

Section: Introductionmentioning

confidence: 99%

Optical and Mechanical Properties of Layered Infrared Interference Filters

Bembenek

Маковійчук

Shatskyi

et al. 2022

Sensors

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The design and manufacturing technology of interference-absorbing short-wave filters based on a layered composition of Si–SiO on a sapphire substrate of various shapes was developed. A transition layer of SiO was applied to the surface of the substrate, alternating with layers of Si–SiO with an odd number of quarter-wave layers of materials with high (Si) and low refractive indices (SiO), and the application of an outer layer of SiO as an appropriate control of the materials’ thickness. The optical properties of the infrared light filter were studied. It was established that the created design of the light filter provides the minimum light transmission in the visible region of the spectrum from 0.38 to 0.78 µm and the maximum in the near infrared region from 1.25 to 5 µm and has stable optical indicators. A method for studying the stress–strain state and strength of a multilayer coating of a light filter under the action of a local arbitrarily oriented load was developed. For simplicity in the analysis and for obtaining results in the analytical form, the one-dimensional model of the configuration “multilayer covering—firm substrate” constructed earlier by authors was used. From a mechanical point of view, the upper protective layer of the multilayer coating was modeled by a flexible plate, and the inner operational composite N-layer was subjected to Winkler’s hypothesis about the proportionality of stresses and elastic displacements.

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Research on the Influence of the Load Direction and the Cross-Section Shape on the Young's Modulus of Elements Produced by the Fused Deposition Modeling Method

Cited by 4 publications

References 26 publications

An Additive Manufacturing Direct Slicing Algorithm Based on a STEP Model

An Additive Manufacturing Direct Slicing Algorithm Based on a STEP Model

Research on the Influence of Processing Parameters on the Specific Tensile Strength of FDM Additive Manufactured PET-G and PLA Materials

Optical and Mechanical Properties of Layered Infrared Interference Filters

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