ANALYSIS AND EVALUATION OF SPACECRAFT BATTERY ACCELERATED LIFE TEST DATA.
NAVAL AMMUNITION DEPOT CRANE IND QUALITY EVALUATION DEPT
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The report presents the findings from the mathematicalstatistical analysis of data generated from the accelerated life test on 40 nickel-cadmium spacecraft battery cells. Two major objectives of the analysis were to 1 determine the applicability and reliability of the previously developed cell life prediction model when applied to an accelerated life situation and 2 attempt to make alterations in the prediction model which would make it more conducive to accelerated life testing. Results of the analysis, based on eight failures to date, indicate 1 about 75 accuracy in predicting the useful life of a cell with the original prediction model and 2 the application of Bayesian analysis techniques yields the same accuracy, but enables the model to be formally used in the absence of historical data. Author
- Electrochemical Energy Storage