ANALYSIS AND EVALUATION OF SPACECRAFT BATTERY ACCELERATED LIFE TEST DATA.

Abstract

The report presents the findings from the mathematical/statistical 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)

Document Details

Document Type
Technical Report
Publication Date
Sep 22, 1970
Accession Number
AD0713457

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Computing-Related Activities
  • Data Analysis
  • Data Science
  • Information Science
  • Interdisciplinary Science
  • Life Tests
  • Mathematical Analysis
  • Mathematics
  • Performance (Engineering)
  • Reliability
  • Spacecraft
  • Statistical Analysis
  • Statistics
  • Test And Evaluation

Readers

  • Battery Technology and Engineering
  • Computational Modeling and Simulation

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference
  • Space