Estimation and Optimization for System Availability Under Preventive Maintenance

Abstract

Engineers design systems to be reliable and work to fulfil their missions without failure for a specific period. However, the system components deteriorate with time and lead to its failures. A frequent system failure increases the management costs, hence posing a challenge to decision-makers. Therefore, for the avoidance of frequent system failures, preventive maintenance is necessary. The objective of any manufacturing firm is to maximize profit and minimize costs. The interval for preventive maintenance can be optimized if the system's availability is maximized and its cost function minimized. This study evaluates the availability and cost function for a continuous operating series-parallel system under a fixed time environment. A multiobjective model is formulated to maximize the availability and minimize the cost function of the system. The study illustrated a numerical example and solved using goal programming (GP), fuzzy goal programming (FGP), genetic algorithm (GA), and particle swarm optimization (PSO) techniques. The results are compared using a robust statistical test and, the PSO proves to be better. A simulation study was carried out further to evaluate the availability and cost function using R and MATLAB packages.

Multiobjective intuitionistic fuzzy programming under pessimistic and optimistic applications in multivariate stratified sample allocation problems

“…Goli and Golmohammadi [31] proposed a multiobjective mathematical model to determine locations and perform distributions in a closed-loop supply chain under competitive conditions. Alike, Raghav et al [32] explored a multiobjective mathematical programming problem to maximize the profit and minimize the cost function utilizing various methods for preventative system maintenance. Gupta et al [33] discussed the stratified random sampling with minimization of variance and solved it with IF programming.…”

Optimizing Industrial Reliability: A Comparative Study of Hot and Cold Standby Configurations in Three-Unit Parallel Systems

“…Study on dependability metrics for the performance evaluation of mobile communication systems to evaluate the performance of phone communications and their reliability measures done by (16). Two systems with a singular unit that is subjected to randomly generating shocks that occur randomly was analysed by (17). Also, (18) discussed an analysis of the costs for two-unit warm standby models.…”

Signature reliability scrutiny of domestic refrigerator

“…In the beginning, the combined probability density function (PDF) of several performance functions is used to develop the static and first-passage dynamic reliability formulas for the series, parallel and mixed systems. Raghav et al . (2022) developed a multiple-objective approach to improve the device's avail-ability while reducing its cost function.…”

“…In the beginning, the combined probability density function (PDF) of several performance functions is used to develop the static and first-passage dynamic reliability formulas for the series, parallel and mixed systems. Raghav et al (2022) developed a multiple-objective approach to improve the device's avail-ability while reducing its cost function. Goal programming (GP), fuzzy goal programming (FGP), genetic algorithms (GA) and particle swarm optimization (PSO) techniques were used to solve the numerical examples.…”