• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Konferenzschrift
  4. Comparison of dimensional accuracy and tolerances of powder bed based and nozzle based additive manufacturing processes
 
  • Details
  • Full
Options
2019
Presentation
Title

Comparison of dimensional accuracy and tolerances of powder bed based and nozzle based additive manufacturing processes

Title Supplement
Paper presented at ICALEO 2019, International Congress on Applications of Lasers and Electro-Optics, October 7-10, 2019, Orlando, Florida
Abstract
Additive Manufacturing (AM) processes have the potential to produce near-net shaped complex final parts in various industries such as aerospace, medicine or automotive. Powder bed based and nozzle based processes like Laser Metal Deposition (LMD), Laser Powder Bed Fusion (LPBF) and Electron Beam Melting (EBM) are commercially available, but selecting the most suitable process for a specific application remains difficult and mainly depends on the individual know-how within in a certain company. Factors such as the material used, part dimension, geometrical features as well as tolerance requirements contribute to the overall manufacturing costs which need to be economically reasonable compared to conventional processes. Within this contribution the quantitative analysis of basic geometrical features such as cylinders, thin walls, holes and cooling channels of a special designed benchmark demonstrator manufactured by LMD; LPBF and EBM is presented to compare the geometrical accuracy within and between these processes to verify existing guidelines, connect the part quality to the process parameters and demonstrate process-specific limitations. The fabricated specimens are investigated in a comprehensive manner with 3D laser scanning and CT scanning with regard to dimensional and geometrical accuracy of outer and inner features. The obtained results will be discussed and achievable as built tolerances for assessed demonstrator parts will be classified according to general tolerance classes described in [1, 2].
Author(s)
Gruber, Samira  orcid-logo
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Grunert, Christian  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Riede, Mirko  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Lopez, Elena  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Marquardt, Axel
TU Dresden
Brückner, Frank  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Leyens, Christoph  orcid-logo
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Conference
International Congress on Applications of Lasers & Electro-Optics (ICALEO) 2019  
DOI
10.24406/publica-fhg-406256
File(s)
N-572385.pdf (1.75 MB)
Rights
Under Copyright
Language
English
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024