Voici notre dernière sélection de publications et de brevets mondiaux en anglais sur la fabrication additive, parmi de nombreuses revues scientifiques en ligne, classées et axées sur la fabrication additive, l'impression 3D, le dépôt par fusion, le frittage, la stéréolithographie, l'impression de métal, le prototypage rapide, le dépôt couche par couche et le dépôt d'énergie.
Grain Refinement Caused by Larger Particles in Laser 3D Printing of AISI 304L Stainless Steel
Published on 2025-03-10 by Xuhuai Zhang, Xing Lu @MDPI
Abstract: Additively manufactured (AM) stainless steel has attracted a lot of attention for its competitive performance advantages over parts prepared by traditional methods. However, the influence of the powder characteristic of AISI 304L stainless steel on the laser 3D printing (3DP) process has yet to be clarified. In this research, the effect of the particle size of atomized AISI 304L stainless steel powder on 3DP of a powder-fed laser was studied, the grain morphology of different printed samples was[...]
Our summary: Influence of powder size on 3DP process, Analysis of grain morphology using EBSD technology, Effect on mechanical properties in single-pass and multi-pass deposition.
Grain Refinement, Laser 3D Printing, AISI 304L Stainless Steel, Powder Characteristic
Publication
Design Guide for Hybrid-Additive Manufacturing of Inconel 718 Combining PBF-LB/M and In Situ High-Speed Milling
Published on 2025-03-10 by David Sommer, Simon Hornung, Cemal Esen, Ralf Hellmann @MDPI
Abstract: As the correlation between design rules and process limitations is of the upmost importance for the full exploitation of any manufacturing technology, we report a design guide for hybrid-additive manufacturing of Inconel 718. Basic limitations need to be evaluated for this particular hybrid approach that combines laser powder bed fusion (PBF-LB/M) and in situ high-speed milling. Fundamental geometric limitations are examined with regard to the minimum feasible wall thickness, cylinders, overhang[...]
Our summary: Design guide for hybrid-additive manufacturing of Inconel 718 combining PBF-LB/M and in situ high-speed milling, Examination of geometric limitations, Derivation of design guidelines for reliable build process
hybrid-additive manufacturing, Inconel 718, PBF-LB/M, high-speed milling
Publication
Characterization and Modelling of Biomimetic Bone Through Additive Manufacturing
Published on 2025-03-10 by Niranjan Srinivasan, Mohsen Barmouz, Bahman Azarhoushang @MDPI
Abstract: The long-term success of bone implant scaffolds depends on numerous factors, such as their porosity, mechanical properties, and biocompatibility. These properties depend on the type of material, such as metals and their alloys or ceramics, and the procedure used to create the scaffolds. This study aims to find the biomimetic properties of aluminum 6061 (Al 6061) alloy through Digital Light Processing (DLP) and sintering. Hollow cylindrical Al 6061 samples are printed through the DLP process at 9[...]
Our summary: Long-term success of bone implant scaffolds depends on porosity, mechanical properties, and biocompatibility. Study aims to find biomimetic properties of Al 6061 alloy through DLP and sintering. Scaffold model created with anisotropic properties closer to trabecular bone.
Additive Manufacturing, Biomimetic Bone, Characterization, Modelling
Publication
Use of Biobased Resins Derived from Renewable Monomers for Sustainable 3D Fabrication Through Two-Photon Polymerization
Published on 2025-03-10 by Francisco Gontad, Jaime Cuartero, Sara Vidal, Nerea Otero, Natalia M. Schulz, Tobias Robert @MDPI
Abstract: This work demonstrates the fabrication of microstructures with formulations containing bio-based prepolymers derived from itaconic acid, commercial reactive diluents, photo initiators, and inhibitors, through two-photon polymerization. Lateral and vertical resolutions within the micron range can be achieved by the adjustment of laser scanning speed and pulse energy, and through the use of microscope objectives with high magnification and numerical aperture. The fabrication throughput can be slig[...]
Our summary: Fabrication of microstructures using biobased resins derived from renewable monomers through two-photon polymerization, achieving micron range resolutions and demonstrating feasibility for 3D microstructure fabrication.
Biobased Resins, Renewable Monomers, Two-Photon Polymerization, Microstructures
Publication
Challenges and Opportunities
Published on 2025-03-09 by Antreas Kantaros, Meropi Katsantoni, Theodore Ganetsos, Nicolae Petrescu @MDPI
Abstract: The evolution of thermoplastic materials has played a critical role in advancing high-speed Fused Filament Fabrication (FFF) and Fused Deposition Modeling (FDM) 3D printing technologies. This study explores the performance and challenges associated with next-generation thermoplastics specifically designed for high-speed printing, such as high-speed PLA, ABS, and PETG, in comparison to conventional materials. A systematic analysis was conducted to evaluate the key parameters, including the mechan[...]
Our summary: Evolution of thermoplastic materials for high-speed 3D printing, performance analysis of next-generation thermoplastics, challenges and opportunities for future development.
thermoplastic materials, high-speed printing, mechanical properties, FFF/FDM
Publication
A Bioactive Platform for Bone Regeneration
Published on 2025-03-08 by Gheorghe Iosub, Ioana-Alexandra Lungescu, Alexandra C?t?lina B�rc?, Adelina-Gabriela Niculescu, Paul Catalin Balaure, Sorin Constantinescu, Bogdan Mihaiescu, Drago? Mihai R?dulescu, Alexandru Mihai Grumezescu, Ariana Hudi??, Ionela Andreea Neac?u, Adrian Radu R?dulescu @MDPI
Abstract: Osteoporosis and bone defects are commonly observed in postmenopausal women, often linked to decreased folic acid levels, which play a crucial role in bone metabolism and regeneration. This study investigates 3D-printed polyethylene terephthalate glycol (PETG)-based porous scaffolds impregnated with chitosan (CS), hydroxyapatite (HAp), and folic acid (FA) for bone tissue engineering applications. The PETG-CS scaffold serves as the primary structural framework, with HAp incorporated to enhance bi[...]
Our summary: Investigation of PETG-based scaffolds impregnated with CS, HAp, and FA for bone tissue engineering. Enhanced cell viability and biocompatibility demonstrated. Promising platform for personalized regenerative therapies.
3D printing, Bone regeneration, Polyethylene terephthalate glycol, Folic acid
Publication
3d printer with expandable enclosed build chamber for metal additive manufacturing
Patent published on the 2025-03-06 in WO under Ref WO2025049469 by GENERATIONAL SYSTEMS LLC [US] (Knotts Michael [us], Thompson Travis [us])
Abstract: A 3D printer including an expandable build chamber, a print bed, and a print head is disclosed. The expandable build chamber is defined by a plurality of stationary walls and an adjustable wall enclosing an open interior having an open interior volume. The print bed is configured to receive the feedstock material from the print head. The print bed is disposed within the open interior. The print head is configured to deposit the feedstock material onto the print bed. The print head is disposed wi[...]
Our summary: A 3D printer with an expandable enclosed build chamber is designed for metal additive manufacturing, featuring a print bed and a print head within the adjustable chamber walls to deposit feedstock material while maintaining isolation from the ambient environment.
3D printer, expandable build chamber, metal additive manufacturing, print head
Patent
Optical system with demagnifying telescope for additive manufacturing
Patent published on the 2025-03-06 in WO under Ref WO2025049583 by SEURAT TECH INC [US] (Bayramian Andrew [us], Kras Susanne [us])
Abstract: A print engine of an additive manufacturing system can include a XY gantry mirror system arranged to receive and redirect a two dimensional laser image. An XY galvo mirror system can be arranged to receive and redirect the two dimensional laser image from the XY gantry mirror system toward multiple positions on a print bed following a print path. A first demagnifying telescope capable of forming an image is positioned between the XY gantry mirror system and the XY galvo mirror system and a secon[...]
Our summary: Optical system with demagnifying telescope for precise laser image redirection in additive manufacturing. First demagnifying telescope positioned between XY gantry mirror system and XY galvo mirror system. Second image relay telescope positioned between first demagnifying telescope and XY galvo mirror.
demagnifying telescope, additive manufacturing, optical system, laser image
Patent
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