Availability Optimization of a Series Repairable System with Multiple k-out-of-n Subsystems

Availability Optimization of A Series Repairable System with Multiple k-out-of-n Subsystems

We address the redundancy allocation of a series repairable system with multiple k-out-of-n subsystems with each subsystem following shut-off rule. The objective of the problem is to find the optimal number of repairmen and redundant components in each subsystem for optimization of steady-state availability subject to weight, cost and volume constraints. We propose a Particle Swarm Optimization...

Availability of k-out-of-n: F Secondary Subsystem with General Repair Time Distribution

In this paper we study the steady state availability of main k-out-of-n: F and secondary subsystems having general repair time distribution. When more than k units of main subsystem fail, then the main subsystem shuts off the secondary subsystem. The life time distributions of the main units and that of secondary subsystem are exponentially distributed. A repair facility having single repairman...

Real Time Study of a k-out-of-n System: n Identical Elements with Increasing Failure Rates

Availability Equivalence Analysis of a Repairable Series-Parallel System

This paper studies the availability equivalence of different designs of a repairable series-parallel system. Under the assumption that the system components have constant failure rates and repair rates, we derive the availability of the original and improved systems according to reduction, increase, hot duplication, warm duplication and cold duplication methods, respectively. The availability e...

Availability Analysis and Design Optimization for a Repairable Series-parallel System with Failure Dependencies

In this paper, the design of a repairable series-parallel system with failure dependencies is studied. The key point is that failure dependency and limited repair teams can affect the state transition rates of each subsystem, and thus affect the state distribution of the subsystem and the availability of the system. Taking this into consideration, we present a dependence function to determine t...

Availability Equivalence Factors of a General Repairable Parallel-Series System

The availability equivalence factors of a general repairable parallel-series system are discussed in this paper considering the availability function of the system. The system components are assumed to be repairable and independent but not identical. The life and repair times of the system components are exponentially distributed with different parameters. Two types of availability equivalent f...