Open AccessCOMPARATIVE STUDY OF DIFFERENT MAINTENANCE STRATEGIES
Author(s) -
І.В. Толок,
G. V. Banzak,
E.S. Lenkov,
L.M. Vozikova
Publication year - 2020
Publication title -
zbìrnik naukovih pracʹ vìjsʹkovogo ìnstitutu kiïvsʹkogo nacìonalʹnogo unìversitetu ìmenì tarasa ševčenka
Language(s) - English
Resource type - Journals
eISSN - 2519-481X
pISSN - 2524-0056
DOI - 10.17721/2519-481x/2020/68-02
Subject(s) - maintainability , object (grammar) , computer science , reliability (semiconductor) , process (computing) , reliability engineering , component (thermodynamics) , software maintenance , feature (linguistics) , predictive maintenance , systems engineering , engineering , software , software development , artificial intelligence , power (physics) , linguistics , physics , philosophy , quantum mechanics , thermodynamics , programming language , operating system
A characteristic feature of complex technical objects for special purposes is the presence in their composition of a large number (tens, hundreds of thousands) of various types component parts, which have different levels of reliability, different patterns of their wear and tear processes. This feature requires a more subtle approach to the organization and planning of maintenance in course of their operation.The problem is that in the development of such facilities, all issues related to maintainability and maintenance should be addressed already at the early stages of facility design. If you do not provide in advance the necessary hardware and software for the built-in monitoring of technical condition (TC) of the object, do not develop and "build" the maintenance technology into the object, then it will not be possible to realize in the future a possible gain in the reliability of the object due to maintenance. Since all these issues must be resolved at the stage of object creation (when the object does not yet exist), mathematical models of the maintenance process are needed, with the help of which it would be possible to calculate the possible gain in the level of reliability the facility due to maintenance, to estimate the cost costs required for this. Then, on the basis of such calculations, make a decision on the need for maintenance for this type of objects and, if such a decision is made, develop the structure of the maintenance system, choose the most acceptable maintenance strategy, and determine its optimal parameters.The article shows that the optimal parameters of various maintenance strategies significantly depend on both the reliability and cost structure of the facility and specified requirements for the facility's reliability . The higher the specified value , the more serviced items should be included in the optimal maintenance strategy.It has also been proven that the effectiveness of various maintenance strategies depends significantly on the reliability and cost structure of object. If the distribution of cost restored (including serviced) elements is closely correlated with the distribution of their reliability indicators, difference in effectiveness of different maintenance strategies is reduced. This is clearly seen in the example of Test-2 object, for which the least reliable elements are also the most expensive.