Experimental investigation to reduce knit line effects in C-SMC
Marcel Olma, Nils Meyer, Sergej Ilinzeer, Florian Wittemann, Constantin Krauß, Luise Kärger
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.
Keywords
Sheet Molding Compound, Compression Molding, Knit Lines, Carbon Fiber, Tension Test
Published online 5/7/2025, 8 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Marcel Olma, Nils Meyer, Sergej Ilinzeer, Florian Wittemann, Constantin Krauß, Luise Kärger, Experimental investigation to reduce knit line effects in C-SMC, Materials Research Proceedings, Vol. 54, pp 355-362, 2025
DOI: https://doi.org/10.21741/9781644903599-39
The article was published as article 39 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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