TY  - CHAP
A1  - Gerhards, Benjamin
A1  - Schleser, Markus
A1  - Otten,, Christian
A1  - Schwarz, Alexander
A1  - Gebhardt, Andreas
T1  - Innovative Laser Beam Joining Technology for Additive Manufactured Parts
T2  - Conference Proceedings 72nd IIW Annual Assembly and International Conference, 7-12 July 2019, Bratislava
Y1  - 2019
SP  - 1
EP  - 8
ER  - 
TY  - CHAP
A1  - Fateri, Miranda
A1  - Gebhardt, Andreas
T1  - Introduction to Additive Manufacturing
T2  - 3D Printing of Optical Components
N2  - Additive manufacturing (AM) works by creating objects layer by layer in a manner similar to a 2D printer with the “printed” layers stacked on top of each other. The layer-wise manufacturing nature of AM enables fabrication of freeform geometries which cannot be fabricated using conventional manufacturing methods as a one part. Depending on how each layer is created and bonded to the adjacent layers, different AM methods have been developed. In this chapter, the basic terms, common materials, and different methods of AM are described, and their potential applications are discussed.
KW  - Additive manufacturing
KW  - 3D printing
KW  - Digital manufacturing
KW  - Rapid prototyping
KW  - Rapid manufacturing
Y1  - 2020
SN  - 978-3-030-58960-8
U6  - http://dx.doi.org/10.1007/978-3-030-58960-8_1
SP  - 1
EP  - 22
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Cosma, Cosmin
A1  - Kessler, Julia
A1  - Gebhardt, Andreas
A1  - Campbell, Ian
A1  - Balc, Nicolae
T1  - Improving the Mechanical Strength of Dental Applications and Lattice Structures SLM Processed
JF  - Materials
N2  - To manufacture custom medical parts or scaffolds with reduced defects and high mechanical characteristics, new research on optimizing the selective laser melting (SLM) parameters are needed. In this work, a biocompatible powder, 316L stainless steel, is characterized to understand the particle size, distribution, shape and flowability. Examination revealed that the 316L particles are smooth, nearly spherical, their mean diameter is 39.09 μm and just 10% of them hold a diameter less than 21.18 μm. SLM parameters under consideration include laser power up to 200 W, 250–1500 mm/s scanning speed, 80 μm hatch spacing, 35 μm layer thickness and a preheated platform. The effect of these on processability is evaluated. More than 100 samples are SLM-manufactured with different process parameters. The tensile results show that is possible to raise the ultimate tensile strength up to 840 MPa, adapting the SLM parameters for a stable processability, avoiding the technological defects caused by residual stress. Correlating with other recent studies on SLM technology, the tensile strength is 20% improved. To validate the SLM parameters and conditions established, complex bioengineering applications such as dental bridges and macro-porous grafts are SLM-processed, demonstrating the potential to manufacture medical products with increased mechanical resistance made of 316L.
Y1  - 2020
U6  - http://dx.doi.org/10.3390/ma13040905
SN  - 1996-1944
VL  - 13
IS  - 4
SP  - 1
EP  - 18
PB  - MDPI
CY  - Basel
ER  - 
TY  - CHAP
A1  - Pfeiffer, Johann
A1  - Balc, N.
A1  - Gebhardt, Andreas
T1  - Studie zur Untersuchung der Auswirkung von Fräsbahnstrategien auf die Oberflächenqualität von mittels SLM gefertigten Metallteilen
T2  - Tagungsband 21. Nachwuchswissenschaftler*innenkonferenz
N2  - Für die Herstellung von metallischen Bauteilen wird in der heutigen Zeit eine Vielzahl
von Verfahren auf dem Markt angeboten. Dabei stehen die additiven im Wettbewerb
zu den konventionellen Verfahren. Die erreichbaren Oberflächenqualitäten der additiven sind nicht mit denen spanender Verfahren vergleichbar. Für diesen Beitrag wurde analysiert, ob sich ein mittels Selektivem Laserschmelzen (SLM) additiv hergestellter Edelstahl hinsichtlich seiner Oberflächenqualität nach der Zerspanung von einem umgeformten konventionell hergestellten Edelstahl gleicher Sorte unterscheidet.
Y1  - 2021
SN  - 978-3-932886-36-2
N1  - 21. Nachwuchswissenschaftler*innenkonferenz, Ernst-Abbe-Hochschule Jena
26. und 27. Mai 2021
SP  - 99
EP  - 102
PB  - Verlag Ernst-Abbe-Hochschule Jena
CY  - Jena
ER  -