Accession Number : ADA305189

Title :   Flywheel Testing and Evaluation,

Corporate Author : UNION CARBIDE CORP OAK RIDGE TN

Personal Author(s) : Steele, R. S.

PDF Url : ADA305189

Report Date : 1982

Pagination or Media Count : 12

Abstract : During the past several years, the DOE Mechanical Energy Storage pro gram has supported spin testing of high performance composite flywheels to verify analytical predictions, identify unknown parameters, and understand the factors influencing flywheel reliability. In general, the results have supported the early predictions of flywheel performance; but certain real world factor evaluations now require further investigation. This paper discusses six general statements regarding the state-of-the-art in composite flywheels technology and presents the supporting data. (1) Composite flywheel performance is superior to that of metallic flywheels while (2) presenting less severe containment requirements. (3) Composite flywheel fatigue life exceeds 1000 cycles. (4) Thermal considerations dictate a low pressure environment. (5) Balance characteristics of composite flywheels require special suspension provisions. And finally, (6) analytical models predict performance with increasing confidence and are thus becoming more useful in establishing the reliability of the rotor. Testing efforts must now address questions relating to lifetime, reliability, system design, and cost. (AN)

Descriptors :   *FATIGUE LIFE, *FLYWHEELS, TEST AND EVALUATION, PRESSURE GRADIENTS, MATHEMATICAL MODELS, DENSITY, PERFORMANCE(ENGINEERING), COMPOSITE MATERIALS, PROTOTYPES, COMPOSITE STRUCTURES, LOW PRESSURE, CONTAINMENT(GENERAL), RELIABILITY, THERMAL ANALYSIS, MATHEMATICAL PREDICTION, LIFE CYCLES, DESIGN CRITERIA, FAILURE(MECHANICS), ENERGY STORAGE, CYCLIC LOADS.

Subject Categories : Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE