accelerated life test


Also found in: Acronyms.

accelerated life test

[ak′sel·ər‚ā·dəd ′līf ‚test]
(engineering)
Operation of a device, circuit, or system above maximum ratings to produce premature failure; used to estimate normal operating life.

accelerated life test

A test in which one or more parameters (e.g., temperature) is increased or decreased beyond its normal or rated value to determine the resulting deterioration within a reasonable time period.
References in periodicals archive ?
The system selected to run the accelerated life test was a common, name-brand heat pump.
Note also that the summation to be kept, Y, is the sum of the reciprocal accelerated life test times to failure.
The basic procedure for conducting accelerated life tests consists of two parts: (1) determining median failure time at each temperature (i.
However, high amplitude sinusoidal vibration accelerated life tests are frequently specified to provide some assurance that the isolator will function satisfactorily over the intended life of the isolated product.
Lessard adds that accelerated life tests show the tubes last six years or more.
Subjects include non-normal distributions that describe the Bayesian updating of atmospheric models, efficient uniform designs for mixture experiments in three and four components, designs of accelerated life tests for periodic inspection with Burr Type III distributions, parameter estimation using Cressie-Read divergence measures with exponential grouped censored data, estimation of variance components of acceleration degradation models, production of the ration of the symmetric differences of order statistics, surface roughness measurements acquired by spatial statistics, Diallel crosses, and the characterization of distributions by conditional expectations of functions of generalized order statistics.
Abstract: Accelerated life tests (usually thermalcycle) are increasingly necessary in microelectronics development and marketing, but are troublesome and expensive.
The accelerated life tests have as objective the determination of reliability indicators (usually the failure rate or the mean life), and are achieved by increasing the stress over the nominal margins, with the condition of maintaining the mechanisms responsible for the occurrence of failures.
Optimum censored accelerated life tests for normal and lognormal life distribution", IEEE Trans.
Very severe accelerated life tests are performed on fully developed tubes.
In addition to providing best-in-class products and solutions, Eaton engineers are assisting Embraer with system integration and are conducting accelerated life tests to support Embraer's entry-into-service schedule targets for all three aircraft.
For accelerated life tests, engineers take equipment up to its limits, Kimzey said, purposely driving it rapidly to failure.
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