Precision Additive Manufacturing Processes

Special Issue Editors


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Guest Editor
Institute for Automation and Applied Informatics, Karlsruhe Institute of Technology, 76344 Karlsruhe, Germany
Interests: additive manufacturing; system integrations for printed materials and systems; digital materials for 3D printing; industry 4.0 concept and applications
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Guest Editor
Institute for Automation and Applied Informatics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
Interests: machining; modelling and optimization of manufacturing processes; 3D functional printing; hybrid additive and subtractive processes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Its unrivalled ability to produce complex 3D parts with considerable reductions in lead-time and material wastage makes additive manufacturing (AM, or 3D printing) a key enabling technology for numerous industrial applications. Especially, AM has the potential to revolutionize manufacturing with new processes, materials and applications. Nevertheless, the precision of AM parts is still an open burning issue that needs addressing, whether metallic, polymer or polymer-based composite components are additively manufactured. The three aspects of a precision process are (1) robust fabrication, (2) predictable performance and (3) measurable quality. Although AM techniques have recently seen increased adoption by various industrial sectors, the precision of the additively manufactured parts remains the main barrier to the full implementation of AM processes and to gaining an increased market acceptance and penetration. Lack of precision in AM processes can be due to several reasons, such as material-related performance, equipment inaccuracies, complex thermal and/or chemical and/or multi-physical and multi-scale nature of the AM processes, inconsistency and interdependent effects of process parameters, lack of smart control systems and inadequate characterization techniques. This Special Issue aims to collect a broad spectrum of cutting-edge and original research and review studies attempting to improve the precision of additive manufacturing processes and related subjects.

Dr. Steffen Scholz
Dr. Ahmed Elkaseer
Guest Editors

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Keywords

  • AM and functional printing
  • design for precision AM
  • AM process modelling and simulation
  • data-driven process improvement
  • optimization of AM processing parameters
  • characterization of AM parts
  • AM post-processing methods
  • advances in application-oriented precision AM

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Published Papers (1 paper)

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Research

19 pages, 7335 KiB  
Article
Influence of Deposition Parameters on Hardness Properties of InconelTM 718 Processed by Laser Powder Bed Fusion for Space Applications
by Raffaella Sesana, Cristiana Delprete, Marco Pizzarelli, Matteo Crachi, Luca Lavagna, Domenico Borrelli and Antonio Caraviello
J. Manuf. Mater. Process. 2023, 7(1), 36; https://doi.org/10.3390/jmmp7010036 - 1 Feb 2023
Cited by 1 | Viewed by 2286
Abstract
InconelTM 718 is widely used for commercial application in aerospace industry and additive manufacturing process allows for versatile design and manufacturing opportunities. In the present research, the results of a wide experimental campaign run on additive manufactured InconelTM 718 specimens obtained [...] Read more.
InconelTM 718 is widely used for commercial application in aerospace industry and additive manufacturing process allows for versatile design and manufacturing opportunities. In the present research, the results of a wide experimental campaign run on additive manufactured InconelTM 718 specimens obtained with different processing parameters are presented. In particular, the influence of process parameters (for both vertical and horizontal planes with respect to the building direction) on the hardness properties are investigated. A further investigation is performed on the optimal hardness testing procedure for additive manufacturing. The research is extended to as-built and heat-treated specimens. The new insight gained is that the orientation of the printing direction with respect to indentation direction can be responsible for scattering in hardness measurements and indentation size effect. As-built specimens show a strong anisotropy for in-plane and growth directions and an increment of hardness with respect to increasing energy density. The difference between hardness value with respect to the energy density and the measurements scattering are reduced by the heat treatment. A careful handling of hardness data is required when dealing with additive manufactured materials. Full article
(This article belongs to the Special Issue Precision Additive Manufacturing Processes)
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