DR Congo with the National Program for Space and Technological Research (PNRST), is the subject of improvement of structure of satellite own the himself.
The problem is to simulate and model the structure from the point of view viscoplasticity, vibration and cryogenic behavior at very high altitudes. Sizing will be facilitated by the following approach:
1. cracking among the modes of ruin of structures;
2. the mechanics of fracture among models dealing with the cracking of structures; 3. finite element methods among numerical methods applicable in fracture mechanics.
One of the major problems encountered in factories is the maintenance of production equipments. The purpose of this article is to evaluate the failures of the centrifugal pump units used in the Regideso / Lukaya plant to draw and distribute water, while investigating their causes. The results expressed graphically showed us that the pump units regularly experienced problems, a situation that led to periods of instability in the distribution of water.
The reliability indicators determine the state of equipments in operation. In this article we have calculated the different reliability indicators of the pump units of the Lukaya pumping plant used for the collection and the discharge of water.
The values found made it possible to understand that the motor pump units are experiencing more and more a loss of performance and calls for the improvement of the practical availability variable.
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