Step-stress models form an essential part of accelerated life testing procedures. Under a
step-stress model, the test units are exposed to stress levels that increase at intermediate …

Accelerated life testing (ALT) experiments are widely used in reliability studies on extremely
durable products having large mean times to failure. Simple step-stress ALT (SSALT) is a …

In lifetime analysis of lithium-ion batteries, the failure of a battery is commonly defined as the
time point at which the battery holds only a certain percentage of its initial storage capacity …

Accelerated life-tests (ALTs) are applied for inferring lifetime characteristics of highly reliable
products. In some cases, due to cost or product nature constraints, continuous monitoring of …

A maximum likelihood (ML) method is known to produce inconsistent estimators if the
likelihood function is unbounded from above, eg, in models with heavy-tailed distribution or …

We propose a parametric model for describing chronic disease mortality from cohort data
and illustrate its use for Type 2 diabetes. The model uses ideas from accelerated life testing …

Step-stress is a special type of accelerated life-testing procedure that allows the
experimenter to test the units of interest under various stress conditions changed (usually …

A step‐stress accelerated life testing model is considered for progressive type‐I censored
experiments when the tested items are not monitored continuously but inspected at …

This paper investigates a simple step-stress accelerated lifetime test (SSALT) model for the
inferential analysis of exponential competing risks data. A generalized type-I hybrid …

Abstract A generalized Three Monotonicities Lemma is established. Assuming exponentially
distributed lifetimes, it is used to prove the stochastic monotonicity of the MLE of the mean …