@article{SommerPfennigSammleretal., author = {Sommer, Konstantin and Pfennig, Anja and Sammler, Fiona and Abdelmoula, Mahmoud and Kamerer, Denis and Heiler, Roland}, title = {First Approach in Analysis of Tool Wear When Milling Additive Manufacturing (AM) Parts}, series = {Applied Sciences}, volume = {14}, journal = {Applied Sciences}, number = {14}, editor = {De Jesus, Ab{\´i}lio M. P.}, publisher = {MDPI}, issn = {2076-3417}, doi = {10.3390/app14146219}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:523-18866}, abstract = {Wire arc additive manufacturing (WAAM) and laser-based powder bed fusion (L-PBF) are additive manufacturing (AM) processes that allow the manufacturing of complex part geometries. The manufacturing of AM parts does not result in high-quality functional surfaces; therefore, postprocessing such as milling is usually required. For L-PBF parts, the support structures and, for WAAM parts, the undulating surface are usually removed after AM processes. These two application-related cases are investigated in this work, with the conclusion that support structure milling and the milling of the surface of WAAM parts lead to the dimensionally increased wear of milling tools in comparison to milling of solid material.}, subject = {Additive Manufacturing}, language = {en} } @article{NollerPfennigDahlmeyer, author = {Noller, Sebastian F. and Pfennig, Anja and Dahlmeyer, Matthias}, title = {Introduction of the Experimental Setup for the Investigation of the Novel Selective Melt Dispersion (SMD): A Directed Energy Deposition (DED) Process}, series = {Clean Technologies}, volume = {6}, journal = {Clean Technologies}, number = {2}, editor = {Luis Alconero, Patricia}, publisher = {MDPI}, issn = {2571-8797}, doi = {10.3390/cleantechnol6020030}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:523-18474}, pages = {572 -- 585}, abstract = {This study focuses on developing an experimental setup to investigate the Selective Melt Dispersion (SMD), a Directed Energy Deposition (DED) process. SMD as a means of in-process joining (IPJ) aims to integrate components and assemblies during additive manufacturing, combining the advantages of various processes for eco-friendly and economical resource utilization. The research initially analyzed DED systems and defined requirements for subsystems and the overall system. Critical subsystems, including the energy source, material feed, and others, were sequentially developed, and a proof of concept involved building 20 stacked welded tracks, validated through micrograph analysis. The study concludes by evaluating and discussing the fulfillment of the defined requirements. The system comprises a centrally arranged vibration-assisted powder feed; a laterally arranged laser incidence at a 45° angle; a kinematic structure where all axes are arranged on the workpiece, so the powder supply does not require movement; and a shield gas supply.}, subject = {Direct Energy Deposition}, language = {en} }