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The lifetime distribution is important in reliability studies. There are many situations in lifetime testing, where an item (technical object) fails instantaneously; therefore, the observed lifetime is reported as zero. We suggest a mixture of a singular distribution and Weibull distribution. We apply maximum likelihood to estimate parameters of the mixture. The methods are illustrated by a numerical...
Due to the nature of tasks performed by an aircraft, one of the most essential criteria determining the quality of its maintenance process is the reliability of devices and systems installed on an aircraft. The assurance of the reliability of aircraft devices at an adequately high level minimises the causes of failures. Unfortunately, the influence of destructive factors connected, among other things,...
This article presents an attempt at an analytical description of technical state changes within a selected group of technical objects. The occurring changes of the technical state of these objects are identified by diagnostic parameter values. The changes are identified by diagnostic parameter values. The technical state of a device deteriorates with the time of its maintenance due to the effect of...
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