Abstract
For ship equipment turnover spare parts, if the maintenance interval is too long, the safety and working ability will be reduced; if frequent maintenance is performed, it will cause much waste. Therefore, it is necessary to determine the appropriate maintenance interval for resource optimization. The article analyzes the factors of turnover spare parts maintenance resource optimization. It establishes an equipment parts maintenance time resource optimization model based on maintenance theory and multi-objective decision-making methods, which can ensure the familiar training environment, maintenance type, and update type preventive maintenance mode The satisfaction is the largest, and group decision making and improved genetic algorithm are used to solve the optimal satisfaction. Finally, the effectiveness of the model is verified with examples of ship equipment spare parts.
Highlights
According to the maintenance attributes, equipment parts are divided into turnover parts, consumable parts, and lifelimited parts
Turnover parts refer to the features that can be returned to the factory for maintenance, and they are generally large parts with a relatively high price; the consumable parts usually are some small parts, such as sealing ring, gasket, plug, etc., which are discarded when they are used up; the life-limited parts refer to the elements with life, which can be directly replaced after reaching a particular service time, such as the engine of an aircraft[1]
The calculation of turnover process and maintenance cycle of repairable parts for warship equipment is as follows: starting from the collection of reliability data of equipment parts maintenance items, the life distribution model is determined through parameter estimation and hypothesis test, and the mathematical model of hypothetical maintenance mode is established, and the equipment parts maintenance interval is determined through simulation calculation
Summary
According to the maintenance attributes, equipment parts are divided into turnover parts, consumable parts, and lifelimited parts. For the ship turnover equipment spare parts, the maintenance time resource optimization is mainly to optimize the maintenance plan, determine the reasonable maintenance time, improve maintenance efficiency and equipment availability, and reduce the maintenance cost. Time resource optimization is mainly to select the appropriate maintenance cycle and carry out maintenance at a reasonable time, to minimize the downtime of equipment[2]. Regular maintenance usually needs to choose the maintenance interval, which refers to replacing or maintaining equipment according to a specific break. It is suitable for the equipment with fixed distribution law and can predict the time interval of failure[3].
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