SYMPOSIA PAPER Published: 01 January 1985

Fabrication and Spin Tests of Thick Laminated S2-Glass Flywheel Disks


Flywheels have been used to store and supply energy in a wide range of applications. In transportation-related applications, a primary design consideration is to store the maximum amount of energy per unit weight of the flywheel. Based upon this criterion, the high strength-to-density ratios of composite materials make them attractive materials for an efficient design. This investigation reports on a program to develop a composite flywheel consisting of a laminated S2-glass/epoxy central disk and a filament-wound graphite/epoxy outer ring. It is shown both analytically and experimentally that the presence of the outer ring significantly improves the energy density available in a simple laminated disk. Consideration is given to the subjects of fabrication, failure criteria, and experimental determination of ultimate speed and strength of prototype flywheels.

Author Information

Nimmer, RP
General Electric Co., Corporate Research and Development, Schenectady, NY
Torossian, KA
General Electric Co., Turbine Technology Laboratory, Schenectady, NY
Hickey, JS
General Electric Co., Corporate Research and Development, Schenectady, NY
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Developed by Committee: D30
Pages: 465–488
DOI: 10.1520/STP32808S
ISBN-EB: 978-0-8031-4929-8
ISBN-13: 978-0-8031-0436-5