Title :
Nonparametric model for step-stress accelerated life testing
Author :
Tyoskin, Oleg I. ; Krivolapov, Sergey Y.
Author_Institution :
Bauman (B.E.) State Tech. Univ., Moscow, Russia
fDate :
6/1/1996 12:00:00 AM
Abstract :
A nonparametric model of the interval estimation is proposed. The estimation is based on results of step-stress accelerated life testing. The approach includes: application of a linear model of damage accumulation, which is proved to be equivalent to the assumptions accepted in numerous papers; estimation of the time transformation function, using the test results for all the load levels; and application of a nonparametric approach for interval estimation of reliability measures, based on the assumption that life-time distribution under the constant load has increasing failure rate. A numerical example uses initial data obtained on the basis of statistical simulation thus verifying the proposed approach
Keywords :
failure analysis; life testing; numerical analysis; reliability; statistical analysis; failure rate; interval estimation; life-time distribution; linear damage accumulation model; load levels; nonparametric approach; nonparametric model; numerical modelling; reliability measures; statistical simulation; step-stress accelerated life testing; time transformation function estimation; Acceleration; Life estimation; Life testing; Stress measurement; Temperature; Time measurement; Voltage; Zinc;
Journal_Title :
Reliability, IEEE Transactions on