Preprint / Version 1

Compressive and flexural material properties of PC, PLA, PA and PETG for additive tooling in sheet metal forming

##article.authors##

  • Peter Frohn-Sörensen Forming Technology, Institute of Production Technologies, University of Siegen https://orcid.org/0000-0003-0896-7083
  • Michael Geueke Forming Technology, Institute of Production Technologies, University of Siegen https://orcid.org/0000-0001-5132-9779
  • Bernd Engel Forming Technology, Institute of Production Technologies, University of Siegen
  • Bernd Löffler Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University https://orcid.org/0000-0001-8876-2242
  • Philipp Bickendorf Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University
  • Arian Asimi Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University
  • Georg Bergweiler Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University
  • Günther Schuh Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen University

DOI:

https://doi.org/10.31224/2239

Keywords:

Additive Tooling, rapid tooling, additive manufacturing, FFF, FDM, mechanical properties of polymers, forming flexibility, Metal forming

Abstract

In relation to the fourth industrial revolution, traditional manufacturing methods cannot serve the flexibility demands related to mass customization and small series production. Rapid tooling provided by generative manufacturing has been suggested recently in the context of metal forming. Due to the high loads applied during processes to such tooling, a purposeful mechanical description of the additively manufactured (AM) materials is crucial. Until now, a comprehensive characterization approach for AM polymers is required to allow a sophisticated layout of rapid tooling. In detail, information on compressive and flexural mechanical properties of solid infilled materials made by additive manufacturing are sparsely available. These elementary mechanical properties are evaluated in the present study. They result from material specimens, additively manufactured in the fused filament fabrication process. The design of experiments reveals significant influences of the polymer and the layer height on the resulting flexural and compressive strength and modulus as well as density, hardness, and surface roughness. As case study, these findings are applied to a cup drawing operation based on the strongest and weakest material and parameter combination. The obtained data and results are intended to guide future applications of direct polymer additive tooling. The presented case study illustrates such an application and shows the range of manufacturing quality achievable within the materials and user settings for 3D printing.

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Posted

2022-03-28