Double-crossed-step-stress (DCSS) accelerated life test (ALT) method is widely used for estimating
the lifetime of products with high reliability and long lifetime. In order to further reduce the test time and test
cost, a double-synchronous-step-stress (DSSS) ALT method which combines a double-synchronous-step-downstress
(DSSDS) ALT method and a double-synchronous-step-up-stress (DSSUS) ALT method is proposed. The
accelerated stresses decrease and increase in a synchronous way with one step in the DSSDS-ALT and DSSUSALT
methods, respectively. Monte Carlo method is adopted to simulate the two methods, and the validity and
efficiency of them are demonstrated by the simulation results. In addition, a comparison analysis of efficiency
between DSSDS-ALT method and DSSUS-ALT method is carried out. The result shows that the DSSDS-ALT
method compared with the DSSUS-ALT method can significantly improve the test efficiency under the same test
condition.
KOU Haixia (寇海霞), AN Zongwen* (安宗文), SUN Daoming (孙道明)
. Comparison Analysis of Efficiency Between Double-Synchronous Step-Down-Stress and Step-Up-Stress Accelerated Life Tests[J]. Journal of Shanghai Jiaotong University(Science), 2017
, 22(3)
: 361
-364
.
DOI: 10.1007/s12204-017-1844-2
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