Additive Manufacturing


Organisation:
Lehrstuhl für Photonische Technologien

FAU Contact:
Scheitler, Christian Josef

Description:


The interdisciplinary research group is engaged in the laser based Additive Manufacturing of metal parts. The group deals with fundamental as well as industry specific application research projects in order to assure a comprehensive understanding.



Research in the group focuses on two processes, namely Laser Beam Melting in powder bed (LBM) and Laser Metal Deposition (LMD). Both are based on the principle of creating fully dense structures by melting metal powder layer by layer with a focused laser beam. However, in the case of LBM the powder is provided by a wiper whereas in the case of LMD it is injected by a powder nozzle. The LBM and LMD processes are unique with abilities such as fabrication of complex geometries (e. g. undercuts) and multi-material fabrication respectively.



Research at the group is integrated between process understanding, powder material and system technology (see figure). Along a completely implemented process chain (including powder analysis, data preparation and post-processing) in its own manufacturing laboratory, the research group deals with qualification and process parameter development of new metal based materials for laser based Additive Manufacturing processes. In order to realize the full capability of research, system technology development and modification is performed according to the requirements.



Within the fundamental research activities of LBM and LMD, physical understanding of the interaction between the powder material and the system technology is established to achieve the full potential of the technology.Based on the acquired fundamental knowledge, research is performed by the group to ensure development of industrial applications. At the same time, the intensive exchange with the industrial partners helps at defining goals of long-term relevance for fundamental research activities.



The research group is a member of the Joint Institute of Advanced Materials and Processes (ZMP). Above all, the group has access to the broad expertise in laser material processing which comes with its location at the Institute of Photonic Technologies.




Assigned publications

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Karg, M., Hentschel, O., Ahuja, B., Junker, D., Haßler, U., Schäperkötter, C.,... Schmidt, M. (2016). Comparison of process characteristics and resulting microstructures of maraging steel 1.2709 in Additive Manufacturing via Laser Metal Deposition and Laser Beam Melting in Powder Bed. In Igor Drstvenšek, Dietmar Drummer, Michael Schmidt (Eds.), Proceedings of the 6th International Conference on Additive Technologies (pp. 39-50). Nürnberg, DE: Ljubljana: Interesansa - zavod.
Karg, M., Ahuja, B., Schmidt, J., Winzer, B., Wirth, K.-E., Peukert, W., & Schmidt, M. (2016). Laser Beam Melting in Powder Bed of nonspherical aluminium microparticles dry coated with metal nanoparticles. In Igor Drstvenšek, Dietmar Drummer, Michael Schmidt (Eds.), Proceedings [Elektronski vir] / 6th International Conference on Additive Technologies iCAT2016 (pp. 67-79). Nürnberg, DE: Ljubljana: Interesansa - zavod.
Ahuja, B., Karg, M., & Schmidt, M. (2015). Additive Manufacturing in Production – Challenges and Opportunities. In Henry Helvajian, Alberto Piqué, Martin Wegener, Bo Gu (Eds.), Proc. of SPIE Vol. 9353, 935304 (pp. 1-10). The Moscone Center San Francisco California, US.
Karg, M., Ahuja, B., Schaub, A., Schmidt, J., Sachs, M., Mahr, A.,... Schmidt, M. (2015). Effect of process conditions on mechanical behavior of aluminium wrought alloy EN AW-2618 additively manufactured by Laser Beam Melting in powder bed. In Proceedings of Laser in Manfacturing Conference 2015 (pp. 1-9). Messe München, DE.
Ahuja, B., Schaub, A., Karg, M., Schmidt, R., Merklein, M., & Schmidt, M. (2015). High Power Laser Beam Melting of Ti-6Al-4V on Formed Sheet Metal to achieve Hybrid structures. In Henry Helvajian, Alberto Piqué, Martin Wegener, Bo Gu (Eds.), Proc. of SPIE Vol. 9353, 93530X (pp. 1-10). The Moscone Center San Francisco California, US.
Karg, M., Ahuja, B., Hentschel, O., & Schmidt, M. (2015). Local Hardness Variation of Ti50Cu32Ni15Sn3 Processed by Laser Beam Melting (LBM). International Journal of Recent Contributions from Engineering, Science & IT, 3(1), 34-38. https://dx.doi.org/10.3991/ijes.v3i1.4293
Karg, M., Ahuja, B., & Schmidt, M. (2015). Strategy towards tailored high-performance metal materials for additive manufacturing. In Proceedings of the 1st International Symposium on Additive Manufacturing, IWS Dresden. Fraunhofer IWS Dresden Winterbergstr. 28 01277 Dresden, DE.
Ahuja, B., Schaub, A., Karg, M., Lechner, M., Merklein, M., & Schmidt, M. (2014). Developing LBM process parameters for Ti-6Al-4V thin wall structures and determining the corresponding mechanical characteristics. Physics Procedia, 56, 90-98. https://dx.doi.org/10.1016/j.phpro.2014.08.102
Ahuja, B., Karg, M., Nagulin, K., & Schmidt, M. (2014). Fabrication and Characterization of High Strength Al-Cu alloys Processed Using Laser Beam Melting in Metal Powder Bed. Physics Procedia, 56, 135-146. https://dx.doi.org/10.1016/j.phpro.2014.08.156
Schaub, A., Ahuja, B., Karg, M., Schmidt, M., & Merklein, M. (2014). Fabrication and Characterization of Laser Beam Melted Ti-6Al-4V Geometries on Sheet Metal. In Axel Demmer (Eds.), Proceedings DDMC 2014 Fraunhofer direct digital Manufacturing conference (pp. 1-5). Grand Hotel Esplanade Berlin, DE.

Last updated on 2019-16-03 at 23:02