Preventive maintenance of multiple components for hydraulic tension systems

Control-limit preventive maintenance policies for components subject to imperfect preventive maintenance and variable operational conditions

This paper develops two component-level control-limit preventive maintenance (PM) policies for systems subject to the joint effect of partial recovery PM acts (imperfect PM acts) and variable operational conditions, and investigates the properties of the proposed policies. The extended proportional hazards model (EPHM) is used to model the system failure likelihood influenced by both factors. S...

Multidimensional Design of Hydraulic Components and Systems

Preventive Maintenance Revision of Naval Systems

Navy has made a huge applying of preventive maintenance that has been recognized as the greatest source of costs. Scheduled overhaul is the most expensive. Revising preventive maintenance and selecting maintenance concepts according to a new algorithm should result into lowering those costs and at the same time maintaining function safety and system readiness. A reversible FMEA analysis coupled...

An Optimal Preventive Maintenance Model to Enhance Availability and Reliability of Flexible Manufacturing Systems

General preventive maintenance model for the components of a system, which improves the reliability to ‘as good as new,’ was used to optimize the maintenance cost. The cost function of a maintenance policy was minimized under given availability constraint. On the other hand, in order to ensure appropriate reliability and availability, the development of the optimal maintenanc...

A New Surface Tension Model for Prediction of Interaction Energy between Components and Activity Coefficients in Binary Systems

In this work, we develop a correlative model based on the surface tension data in order to calculate thermodynamic parameters, such as interaction energy between components (Uij), activity coefficients and etc. In the new approach, by using Li et al. (LWW) model, a three-parameter surface tension equation is derived for liquid mixtures. The surface tension data of 54 aqueous and 73 non-aqueous ...