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  4. Experimental investigation to reduce knit line effects in C-SMC
 
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May 2025
Conference Paper
Title

Experimental investigation to reduce knit line effects in C-SMC

Abstract
The integration of structural features, such as metallic inserts, into carbon fiber-reinforced sheet molding compound (C-SMC) components can be achieved through overmolding. The complexity of the structure and the presence of integrated metallic inserts, however, result in the formation of knit lines, which can lead to a reduction of structural performance. In a conventional SMC initial stack concept (Concept A), the initial stack is placed in the center of the mold. In this work, a new initial stack concept is investigated (Concept B), where the metallic inserts are wrapped in SMC. An experimental comparison of the two different insert concepts demonstrates how the position of the initial stacks of C-SMC can be optimized to enhance the structural performance.
Author(s)
Olma, Marcel
Karlsruher Institut für Technologie -KIT-  
Meyer, Nils
University of Augsburg
Ilinzeer, Sergej  
Fraunhofer-Institut für Chemische Technologie ICT  
Wittemann, Florian
KIT  
Krauß, Constantin
KIT  
Kärger, Luise
KIT  
Mainwork
Material Forming. 28th International ESAFORM Conference on Material Forming, ESAFORM 2025  
Conference
International Conference on Material Forming 2025  
Open Access
File(s)
Download (1.05 MB)
Rights
CC BY 3.0 (Unported): Creative Commons Attribution
DOI
10.21741/9781644903599-39
10.24406/publica-4808
Additional full text version
Landing Page
Language
English
Fraunhofer-Institut für Chemische Technologie ICT  
Keyword(s)
  • Sheet Molding Compound

  • Compression Molding

  • Knit Lines

  • Carbon Fiber

  • Tension Test

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