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http://dx.doi.org/10.5762/KAIS.2018.19.11.88

Computation of Maintainability Index Using SysML-Based M&S Technique for Improved Weapon Systems Development  

Yoo, Yeon-Yong (Missile System PMO, ADD)
Lee, Jae-Chon (Dept. of Systems Engineering, Ajou University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.11, 2018 , pp. 88-95 More about this Journal
Abstract
Maintainability indicates how easily a system can be restored to the normal state when a system failure occurs. Systems developed to have high maintainability can be competitive due to reduced maintenance time, workforce and resources. Quantification of the maintainability is possible in many ways, but only after prototype production or with historical data. As such, the graph theory and 3D model data have been used, but there are limitations in management efficiency and early use. To solve this problem, we studied the maintainability index of weapon systems using SysML-based modeling and simulation technique. A SysML structure diagram was generated to simultaneously model the system design and maintainability of system components by reflecting the maintainability attributes acquired from the system engineering tool. Then, a SysML parametric diagram was created to quantify the maintainability through simulation linked with MATLAB. As a result, an integrated model to account for system design and maintainability simultaneously has been presented. The model can be used from early design stages to identify components with low maintainability index. The design of such components can be changed to improve maintainability and thus to reduce the risks of cost overruns and time delays due to belated design changes.
Keywords
Maintainability index; Maintainability M&S; SysML; MATLAB; systems engineering;
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