Reliability and economic analysis of some communication system devices

Abstract

In the field of reliability, several one and two units hardware/software systems have been analysed by the researchers under various different conditions and situations. A few researchers have also investigated some systems on the basis of collected real data. In fact, the analyses of communication system devices with respect to reliability, performance and cost-benefit on the basis of real data have not been reported. The present thesis is an attempt in the direction. Communication devices are primarily an assembly of electronic components having hardware/ software parts capable of transmitting analog or digital signals through communication wire or wireless. Many such devices are being used in day to day life in various different communication systems. For in-depth study of communication devices and to investigate their failure-free and cost effective performance, a leading manufacturer of communication devices, a unit of Government of India enterprises ‘Bharat Electronic Limited’ located at Panchkula (Haryana) was visited. As it was noted that the performance and cost of a communication device is directly proportional to the quality and costs of its constituents PCBs therefore the reliability and economic analyses of communication devices in a way can be carried out with the help of the analyses of their constituents PCBs and manufacturing process/system involved therein. In the literature of reliability, the analyses of PCBs used in communication devices and their manufacturing process in terms of reliability and cost using real data taking into account practical aspects/ situations of the process, has not been reported. To bridge this gap, in the present thesis reliability and economic analysis of PCBs used in communication devices and their manufacturing system is carried out on the basis of collected real data considering various different practical aspects/ situations.The stochastic models for the system are developed and analysed on the basis of the information gathered/ data collected from a plant/company that manufactures PCBs for communication devices and for the existing situations and also for other expected/ practical situations of the systems. To make study useful and practical, real data on faults/ failures, repairs/ replacements etc. have been collected from the company