Abstract
This article presents the analysis of the resource tests results of valves with a two-position electromagnetic drive, widely used in the devices of aviation and space technology. Degradation processes research has been conducted, which take place in the elements and units of the valves during the resource exhaustion under the influence of operational loads. The critical element of the valve movable part has been discovered. It is the rod that limits the resource of the device. The probabilistic model of damage accumulation in the design material of the rod leading to the destruction of the rod due to fatigue is provided. Prognostication methods of resource of the valves with two-position electromagnetic drive have been developed based on the probabilistic model of damage accumulation in the valve elements. The use of the developed method at the designing stage will make it possible to considerably decrease the number of the necessary resource tests of the valves for receiving probabilistic characteristics of their specified resource
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