• 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. Fiber migration in compression molded LFT-D materials: characterization proposal and first results
 
  • Details
  • Full
Options
2025
Conference Paper
Title

Fiber migration in compression molded LFT-D materials: characterization proposal and first results

Abstract
Fiber mass content (wf) is a key characteristic of long fiber reinforced thermoplastic (LFT) composites. It is defined in LFT-Direct (LFT-D) processing of continuous fiber rovings by the choice of processing parameters. However, in compression molding, the phenomenon of shear induced fiber migration, where wf does change across the flow path, was observed to varying degrees. A density-based method to quickly quantify wf in entire plates is presented and benchmarked against two approaches to thermographic analysis (TGA). The density-based approach was found to deviate from complete wf measurements by -0.4 % improving upon the state-of-the-art TGA results overestimating wf by 1.3 %. This work provides insight into the extent of the fiber migration for glass fiber (GF) reinforced polyamide 6 (PA6) LFT-D materials. For PA6 GF LFT-D with a wf = 33.0 % this deviation is at up to ±16.6 %. Different material combinations of PA6, polycarbonate and GF as well as CF are characterized at low and high wf. Fiber migration is present to various extends for all material combinations.
Author(s)
Schelleis, Christoph  orcid-logo
Fraunhofer-Institut für Chemische Technologie ICT  
Meckes, Luca
Fraunhofer-Institut für Chemische Technologie ICT  
Henning, Frank  
Fraunhofer-Institut für Chemische Technologie ICT  
Mainwork
Material Forming. 28th International ESAFORM Conference on Material Forming, ESAFORM 2025  
Conference
International Conference on Material Forming 2025  
Open Access
File(s)
Download (984.46 KB)
Rights
CC BY 3.0 (Unported): Creative Commons Attribution
DOI
10.21741/9781644903599-51
10.24406/publica-4644
Additional full text version
Landing Page
Language
English
Fraunhofer-Institut für Chemische Technologie ICT  
Keyword(s)
  • LFT-D

  • FRTP

  • composites

  • compression molding

  • fiber migration

  • characterization

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024