Two different approaches have been traditionally considered for dealing with the process of integrity constraints enforcement: integrity checking and integrity maintenance. However, while previous research in the first approach has mainly addressed efficiency issues, research in the second approach has been mainly concentrated in being able to generate all possible repairs that falsify an integ...

The present study is a new approach for finding the suitable maintenance practice with the help of fuzzy logic rule base system. It is a decision making tool which depends upon various condition of a machine .The success of any industry depend on its optimum manufacturing cost of product and for achieving the above said factor the maintenance practice should be efficient and effective .Fuzzy ba...

utilizing the gathered failure data and failure interval data from tabas coal mine in two years, this paper discusses the reliability of powered supports. the data sets were investigated using statistical procedures and in two levels: the existence of trend and serial correlation. the results show that the powered supports follow the gamma reliability function. the reliability of the machine de...

The research investigates the influence of an effective maintenance system on the efficient performance of any industrial system. The core concept of the research explains that the simultaneous focus on the spares inventory subsystem as well as on the preventive maintenance subsystem must be considered when developing a quality maintenance programme. Considering and developing such aspects sepa...

The ability to detect early signs of failure in buried pipe infrastructure is necessary facilitate the continued use ageing for delivery society’s essential services and move beyond disruptive expensive reactive maintenance repair. This paper reports detailed experiments on in-pipe ultrasound techniques assessment ground conditions around plastic pipes. Two sets ultrasonic experiment soil are p...