DHEERAJ PAWAR

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• M.Sc., M.Phil., Ph.D.
• Professor at Amity University

Cost-effectiveness analysis of a reliability model of two distinguishable electricity resources is done in this paper. Subsystem-A is taken as the primary, whereas subsystem-B is taken as the secondary source of electricity. Subsystem-A has three modes – operation, repair, and activation, and subsystem-B has four modes – operation, inspection, mino...

Reliability of three non-identical unit system is analyzed for various measures. Initially, main unit is operational, one is warm standby and other is cold standby. Single repair facility is present with the system. Operational priority is given to main unit over standby units. Failure times of all the components are exponentially distributed where...

In this paper, we examine the profit of a 1 out of 2-unit system with a standby. The system under study comprises of three indistinguishable units. At first, out of three, two units are operational and one is in cold standby mode. When a unit in operation fails, the cold standby unit becomes operational. The system fails if all the three units fail...

In this paper reliability model of a redundant system of two non-identical units is developed that operates in normal/abnormal weather conditions. Single server is available with the system to perform repair activities in normal weather on first come first serve basis and no repair is carried out in abnormal weather. Initially, main unit is operati...

A system/unit is called working in normal environment if it is operating within prescribed conditions set by the manufacturer, otherwise the system is called working in abnormal environment. For example; a hydraulic machine having capacity uplifting the weight of 500 tons exceeds its capacity is termed as working in abnormal environment conditions....

In this paper, profit analysis of a warm standby non-identical (one is main unit another is duplicate unit) units system with single server subject to preventive maintenance of the unit have been discussed. Server repairs or maintenances under the rule FCFS (first come first served). The model consists of two non-identical units–one is operative an...

The present paper deals with the profit analysis of a warm standby non-identical (one is main unit another is duplicate unit) units system with single server. The model consists of two non-identical units-one is operative and the other kept as warm standby and one unit is sufficient to make the system in operative mode. The main unit may fail direc...

This paper proposes the study of modelling and analysis of a two unit parallel system. A constant failure rate is considered for the units which are identical in nature. All repair activities like repair, replacement, preventive maintenance are mended immediately by a single server. The repair of the unit is done after its failure and if the fault...

The main aim of the present paper is to determine economic analysis of a warm standby system of non-identical units by using Semi-Markov process and regenerative point technique. There are two units in the system-one (main) unit is initially operational and the second (duplicate) unit in warm standby. A single repair facility is provided to the sys...

In this paper reliability measures of a single-unit system operating under two weather conditions – normal and abnormal are evaluated using regenerative point technique. For this purpose, a reliability model is developed in which partial fail-ure unit, fails totally. A single server randomly appears at partial failure of the unit on condition to vi...

In this paper, performance measures of a single-unit system operating under two weather conditions – normal and abnormal are evaluated by using regenerative point technique. For this purpose a reliability model is developed in which unit fails completely either directly from normal mode or via partial failure. A single repair facility is provided i...

This paper deals with a reliability model developed for a single-unit system operating under two weather conditions-normal and abnormal. The system fails completely via partial failure. There is a single server who appears and disappears randomly but he remains with the system in abnormal weather. The server inspects the system at its different lev...

In view of the growing use and common man’s affordability of single-unit systems, in the present thesis entitled “Analysis of reliability models of a single-unit system operating under different weather conditions subject to inspection at different levels of damages” some reliability models are proposed considering the concepts of weather condition...

The focus of this paper is to analyze some reliability and economic measures of a single-unit system operating under two weather conditions – normal and abnormal. For this purpose two reliability models are developed in which unit fails completely via partial failure. In model I, server appears and disappears randomly from the system. And, in model...

In the present study two reliability models for a single-unit system working under two weather conditions – normal and abnormal are developed in which unit fails completely via partial failure. There is a single server who appears randomly at partial failure of the unit and remains with the system in abnormal weather. The server inspects the partia...