• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Scopus
  4. Flow-induced fiber displacement in non-bindered UD-NCF during Wet Compression Molding
 
  • Details
  • Full
Options
2022
Journal Article
Title

Flow-induced fiber displacement in non-bindered UD-NCF during Wet Compression Molding

Title Supplement
Analysis and implications for process control
Abstract
Wet compression molding (WCM) provides high-volume production potential for continuously fiber-reinforced composite components with thermoset resins. Reduced cycle times are enabled by simultaneous infiltration, draping and consolidation within a single process step. During compression, the matrix is forced through the macroscopic stack and across its surface. This can cause undesired fiber displacements, which affect the structural performance of the processed part, as local fiber orientations can deviate from the intended one. Since already minor changes in fiber orientation can decrease the part performance, this process defect, often referred to as flow-induced fiber displacement (FiFD), should be avoided during processing. To prevent this, the WCM compression step is comprehensively evaluated by two experimental setups. First, systematic industrial-scale trials provide insight into the correlation between applied mold closing profile and resulting superficial FiFD on macro-scale. Second, a setup with transparent plates is applied to investigate the impact of superficial fluid at the stack surface on the obtained FiFD. Experimental results show positive correlations between velocity and viscosity of superficial fluid flow and observed FiFD. In this context, a more sophisticated closing amplitude of the press in combination with an adapted temperature control of the resin is proposed to minimize undesired fiber displacements.
Author(s)
Albrecht, Fabian
Karslruher Institut für Technologie -KIT-  
Poppe, C.
Karlsruher Institut für Technologie -KIT-  
Tiemann, T.
Karlsruher Institut für Technologie -KIT-  
Sauerwein, V.
Karlsruher Institut für Technologie -KIT-  
Rosenberg, Philipp  
Fraunhofer-Institut für Chemische Technologie ICT  
Henning, F.
Karlsruher Institut für Technologie -KIT-  
Journal
Composites science and technology  
Project(s)
Cost and resource efficient manufacturing of FRP-metal hybrid structures in Wet Compression Molding  
Funder
Bundesministerium für Bildung und Forschung -BMBF-  
DOI
10.1016/j.compscitech.2022.109574
Language
English
Fraunhofer-Institut für Chemische Technologie ICT  
Keyword(s)
  • Composite processing

  • Fluid induced fiber displacement (FiFD)

  • FSI

  • Matlab

  • Mold filling

  • Non-crimped fabrics

  • Process control

  • Process development

  • Wet compression molding (WCM)

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