An Experimental Study of Downfacing Surfaces in Selective Laser Melting

Babu, Joe Joseph; Mehrpouya, Mehrshad; Pijper, Thomas C.; Willemsen, Gydo; Vaneker, Thomas H.J.

doi:10.1002/adem.202101562

Cited by 11 publications

(2 citation statements)

References 37 publications

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“…It is also possible to influence the surface quality by changing the technological parameters, among which the laser power [24], the scanning speed of the laser spot [25], the hatch distance parameter, the layer thickness [26] and the scanning strategy are also defined as important parameters [27]. It has been shown that the specific energy density used producing of the components' contours also affects the surface's quality [28]. In the case of aluminium raw materials, it was shown that a low surface roughness value requires a slow scanning speed and a small hatching distance.…”

Section: Articlementioning

confidence: 99%

Investigating the surface roughness of 3D printed metal parts in case of thin 20 µm build layer thickness

Markovits,

Varga

2023

Journal of Materials Research

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In the case of the laser powder bed fusion technology of metals, the surface quality often does not meet the requirements for use. In addition, the surface can be characterized by different values on different surfaces of the part, depending on the preparation of the workpiece and the technology. The parameters affecting the surface roughness and their effect are also explored in the case of different raw materials and technological settings. In this research, the knowledge was expanded in the case of one of the thinnest layer thicknesses under various conditions. The effect of the angle of orientation during the preparation for the upskin and downskin surfaces of the component, in different directions on the surface of the components were determined in the case of titanium and stainless steel raw materials. In addition, the roughness-reducing effect of the shot peening process was also investigated. Graphical abstract

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Section: Articlementioning

confidence: 99%

Investigating the surface roughness of 3D printed metal parts in case of thin 20 µm build layer thickness

Markovits,

Varga

2023

Journal of Materials Research

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“…[13,14] However, they introduce drawbacks, such as poor surface quality, prolonged build times, and the need for labor-intensive postprocessing to remove the support structures, adding to production costs. [9,15] Topology optimization studies are conducted to determine the optimal material required in support structures. These optimized support structures effectively minimize part deflection during the manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

Advanced Support Structures in Metal Additive Manufacturing: A Comparative Analysis of Porous Media for Enhanced Part Quality and Removal Efficiency

Erol,

Gülletutan,

Günaydın

et al. 2024

Adv Eng Mater

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In laser powder bed fusion additive manufacturing support, structures are crucial for constructing overhang features and maintaining dimensional accuracy. However, traditional support structures exhibit inherent drawbacks, including compromised surface quality, prolonged post‐processing times, and other challenging requirements. This study investigates innovative approaches to address these issues by analyzing two types of specimens—cuboid and lap shear. The cuboid samples explore the manipulation of process parameters to adjust energy densities, transitioning from powder to porous support structures, with porosity measurement assessment. Subsequently, a shear test specimen objectively evaluates porous support parameters alongside traditional block‐type support, analyzing their impact on removal force, distortion, and surface quality. Results reveal that optimized porous support structures surpass traditional counterparts, showcasing superior surface quality, reduced removal forces, and minimized part distortion. Specifically, the shear test demonstrates a 94.25% reduction in removal forces and a 33.67% decrease in upper part distortion. Moreover, the maximum surface roughness (Rz) improves by 22.8% with the implementation of porous supports. By introducing a methodology for comparative analyses of measurable performance indicators, this research enhances understanding of support structure dynamics in additive manufacturing, facilitating advancements in efficiency and quality within the field.This article is protected by copyright. All rights reserved.

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3D printing of customized functional devices for smart biomedical systems

Yang,

Fang,

Wang

et al. 2023

SmartMat

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The escalating demands for smart biomedical systems ignite a significantly growing influence of three‐dimensional (3D) printing technology. Recognized as a revolutionary and potent fabrication tool, 3D printing possesses unparalleled capabilities for generating customized functional devices boasting intricate and meticulously controlled architectures while enabling the integration of multiple functional materials. These distinctive advantages arouse a growing inclination toward customization and miniaturization, thereby facilitating the development of cutting‐edge biomedical systems. In this comprehensive review, the prevalent 3D printing technologies employed in biomedical applications are presented. Moreover, focused attention is paid to the latest advancements in harnessing 3D printing to fabricate smart biomedical systems, with specific emphasis on exemplary ongoing research encompassing biomedical examination systems, biomedical treatment systems, as well as veterinary medicine. In addition to illuminating the promising potential inherent in 3D printing for this rapidly evolving field, the prevailing challenges impeding its further progression are also discussed. By shedding light on recent achievements and persisting obstacles, this review aims to inspire future breakthroughs in the realm of smart biomedical systems.

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An Experimental Study of Downfacing Surfaces in Selective Laser Melting

Cited by 11 publications

References 37 publications

Investigating the surface roughness of 3D printed metal parts in case of thin 20 µm build layer thickness

Investigating the surface roughness of 3D printed metal parts in case of thin 20 µm build layer thickness

Advanced Support Structures in Metal Additive Manufacturing: A Comparative Analysis of Porous Media for Enhanced Part Quality and Removal Efficiency

3D printing of customized functional devices for smart biomedical systems

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