Failure Rate Estimation From Multiple Failure Mechanisms
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United States of America Patent
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Feb 5, 2015
app pub date -
Jul 23, 2014
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Jul 31, 2013
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Abstract
A computerized method for estimating reliability of a system at normal operating conditions. The computerized method includes enables of selection of a plurality of failure mechanisms FMj of the system. The failure mechanisms FMj are estimated to cause failures as time events during use of the system. The failure mechanisms FMj are modeled by respective failure rate models. Failure rates are represented as matrix elements λij which include respective adjustable parameters intrinsic to the failure rate models. Multiple test conditions TCiare selected to accelerate the failure mechanisms FMj. Batches i of the systems are tested during accelerated failure rate tests at the test conditions TCi respectively.
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