Abstract
Compression molded structural sheet molding compound (SMC) composed of S-2 GlassR and polyester resin has been used to fabricate energy storage flywheel rotors. This technique has the potential of low cost, high throughput production of rotors for the automobile industry.
An isophthalic polyester resin and chopped S-2 Glass were used to mold flat, constant cross section discs 53.3 cm. (21 inches) in diameter, 2.54 cm. (1.0 inches) thick, and 49.5 kg. (22.5 pounds) in weight. Materials characterizations have shown a tensile strength of 337 MPa (49 ksi) for the S-2 Glass reinforced rotors, which would allow the rotor to store 28.6 watt-hours per kilogram (13 watt-hours per pound) at 330 hertz when a filament wound carbon fiber/epoxy ring is fitted around the SMC core.
A dynamic test of an SMC flywheel has shown an energy storage density of 27.7 watt-hours per kilogram (12.6 watt-hours per pound) at 330 hertz.
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References
Kulkarni, S.V.,R.G. Stone,and R.H. Toland,”Prototype Development of an Optimized, Tapered Thickness, Graphite/Epoxy Composite Fly wheel”, UCRL-52623, Lawrence Livermore Laboratory, November 1978.
Duke, J.C,”A Comparison of Quasi-Isotropic Fiber Reinforced Composite Laminates”, UCRL-15225, Lawrence Livermore Laboratory, November 1979.
Jutte, R.B.,”Structural SMC- Material, Process, and Performance Review”, Presented at Cobo Hall, Detroit Michigan-SAE Congress and Exposition, February 27-March 3, 1978.
Kay, J.F.,”Advanees in Structural SMC”, presented at the ASTM Symposium on Short Fiber Reinforced Plastics, Minneapolis, Minnesota, April 13–15, 1980.
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© 1983 Plenum Press, New York
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Kay, J.F. (1983). Low Cost Energy Storage Flywheels from Structural Sheet Molding Compound. In: Seferis, J.C., Nicolais, L. (eds) The Role of the Polymeric Matrix in the Processing and Structural Properties Composite Materials. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9293-8_25
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DOI: https://doi.org/10.1007/978-1-4615-9293-8_25
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4615-9295-2
Online ISBN: 978-1-4615-9293-8
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