Experimental and Numerical Analysis of Fiber Matrix Separation during Compression Molding of Long Fiber Reinforced Thermoplastics
Abstract
:1. Introduction
2. Experiments on Fiber Matrix Separation
2.1. Longitudinal Ribs
2.2. Perpendicular Ribs
2.3. Free Flow Region
2.4. Conclusion-Experiments
3. Process Simulation with Mechanistic Model
3.1. Mechanistic Model
3.2. Simulation Results
3.2.1. Local Fiber Bundle Simulations
3.2.2. Full Compression Molding Simulations
3.3. Conclusion-Simulations
4. Conclusions & Recommendations
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Name | Fiber Length [mm] | Fiber Content [wt %] |
---|---|---|
GMT GF30 | 50 | 30 |
GMT GF40 | 50 | 40 |
LF-GMT GF30 | 80 | 30 |
LF-GMT GF40 | 80 | 40 |
Fiber Length [mm] | Fiber Percentage in Rib Section | Elements Per Fiber [−] | Fiber Percentage in Rib Section | |
---|---|---|---|---|
1 | 17% | 1 | 1.2% | |
2 | 22% | 5 | 19.8% | |
5 | 26% | 10 | 19.8% | |
10 | 20% | 25 | 21.6% | |
15 | 18% | 50 | 23.7% | |
Parameter | − | + |
---|---|---|
Fiber Length [mm] | 1 | 20 |
Viscosity [Pas] | 50 | 150 |
Rib Radius [mm] | 3 | 7 |
Initial Orientation | Random | Aligned |
Parameter | Fiber Orientation | Fiber Content | Curvature |
---|---|---|---|
Fiber Length [mm] | −0.6224 | −0.0949 | −0.6197 |
Viscosity [Pa s] | 0.0533 | 0.0004 | 0.0045 |
Rib Radius [mm] | 0.0692 | −0.0081 | 0.0048 |
Initial Orientation | −0.2345 | −0.0024 | −0.39 |
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Kuhn, C.; Walter, I.; Taeger, O.; Osswald, T.A. Experimental and Numerical Analysis of Fiber Matrix Separation during Compression Molding of Long Fiber Reinforced Thermoplastics. J. Compos. Sci. 2017, 1, 2. https://doi.org/10.3390/jcs1010002
Kuhn C, Walter I, Taeger O, Osswald TA. Experimental and Numerical Analysis of Fiber Matrix Separation during Compression Molding of Long Fiber Reinforced Thermoplastics. Journal of Composites Science. 2017; 1(1):2. https://doi.org/10.3390/jcs1010002
Chicago/Turabian StyleKuhn, Christoph, Ian Walter, Olaf Taeger, and Tim A. Osswald. 2017. "Experimental and Numerical Analysis of Fiber Matrix Separation during Compression Molding of Long Fiber Reinforced Thermoplastics" Journal of Composites Science 1, no. 1: 2. https://doi.org/10.3390/jcs1010002