LLL materials program for fiber-composite flywheels

Author: Rinde, J. A.
Published: United States : [publisher not identified], 1979.
Springfield, Va. : National Technical Information Service, [approximately 1979]
Physical Description: microfiche : negative ; 11 x 15 cm

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Summary

During FY'79 the LLL materials program for fiber-composite flywheels has worked in the areas of matrix resins, stress rupture, static engineering properties, and fatigue, or time-dependent engineering properties. Results are reported for physical and mechanical tests of a low-cost matrix-resin system suitable for service up to 150/sup 0/C. Results of stress-rupture tests on E-glass at load levels of interest to flywheel designers are reported for the first time. Lifetimes at these levels are longer than those of S-glass in previous tests. Static engineering properties on a Kevlar-49/rubberized-epoxy composite are reported for tests at 25 and 75/sup 0/C. Properties did not decrease within this temperature range. Creep and fatigue tests were performed over a wide range of stress levels. Both input loads and material-response strains were measured and used to correlate times to failure under creep and fatigue loading histories. Further development may provide a basis for predicting composite-flywheel structural life from laboratory tests.

Report Numbers

UCRL-83043; CONF-790854-2

Other Subject(s)

Collection

NTIS collection.

Note

DOE contract number: W-7405-ENG-48
OSTI Identifier 5902029
Research organization: California Univ., Livermore (USA). Lawrence Livermore Lab.

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