TY  - CHAP
A1  - Schmidt, Thomas
A1  - Kasch, Susanne
A1  - Eichler, Fabian
A1  - Thurn, Laura
T1  - Process strategies on laser-based melting of glass powder
T2  - Lasers in Manufacturing Conference 2021
N2  - This paper presents the laser-based powder bed fusion (L-PBF) using various glass powders (borosilicate and quartz glass). Compared to metals, these require adapted process strategies. First, the glass powders were characterized with regard to their material properties and their processability in the powder bed. This was followed by investigations of the melting behavior of the glass powders with different laser wavelengths (10.6 µm, 1070 nm). In particular, the experimental setup of a CO2 laser was adapted for the processing of glass powder. An experimental setup with integrated coaxial temperature measurement/control and an inductively heatable build platform was created. This allowed the L-PBF process to be carried out at the transformation temperature of the glasses. Furthermore, the component’s material quality was analyzed on three-dimensional test specimen with regard to porosity, roughness, density and geometrical accuracy in order to evaluate the developed L-PBF parameters and to open up possible applications.
KW  - 3D-printing
KW  - glass
KW  - additive manufactureing
KW  - laser based powder fusion
Y1  - 2021
ER  - 
TY  - CHAP
A1  - Ulmer, Jessica
A1  - Braun, Sebastian
A1  - Wollert, Jörg
T1  - Adaptive VR-Produktionsumgebungen für Evaluations- und Schulungstätigkeiten
T1  - Adaptive VR production environments for evaluation and training purposes
T2  - Automation 2021: Navigating towards resilient Production
N2  - Industrie 4.0 stellt viele Herausforderungen an produzierende Unternehmen und ihre Beschäf-tigten. Innovative und effektive Trainingsstrategien sind erforderlich, um mit den sich schnell verändernden Produktionsumgebungen und neuen Fertigungstechnologien Schritt halten zu können. Virtual Reality (VR) bietet neue Möglichkeiten für On-the-Job, On-Demand- und Off-Premise-Schulungen.  Diese  Arbeit  stellt  ein  neues  VR  Schulungssystem  vor,  welches  sich  flexible an unterschiedliche Trainingsobjekte auf Grundlage von Rezepten und CAD Modellen anpassen lässt. Das Konzept basiert auf gerichteten azyklischen Graphen und einem Level-system.  Es  ermöglicht  eine  benutzerindividuelle  Lerngeschwindigkeit  mittels  visueller  Ele-mente. Das Konzept wurde für einen mechanischen Anwendungsfall mit Industriekomponen-ten implementiert und in der Industrie 4.0-Modellfabrik der FH Aachen umgesetzt.
N2  - Industry 4.0 poses many challenges for manufacturing companies and their employees. Inno-vative and effective training strategies are needed to keep pace with rapidly changing produc-tion environments and new manufacturing technologies. Virtual reality (VR) offers new oppor-tunities  for  on-the-job,  on-demand,  and  off-premise  training.  This  work  presents  a  new  VR  training system that can be flexibly adapted to different training objects based on recipes and CAD models. The concept is based on directed acyclic graphs and a level system. It allows a user-individual  learning  speed  by  means  of  visual  elements.  The  concept  was  implemented  for  a  mechanical  use  case  with  industrial  components  and  implemented  in  the  industry  4.0  model factory of the FH Aachen University of Applied Sciences.
Y1  - 2021
SN  - 978-3-18-092392-5
U6  - http://dx.doi.org/10.51202/9783181023921-55
SN  - 0083-5560
N1  - 22. Leitkongress der Mess- und Automatisierungstechnik, 9. und 30. Juni 2021.
SP  - 55
EP  - 64
PB  - VDI
CY  - Düsseldorf
ER  -