Unexpected system failures pose significant problems in power industry and most manufacturing companies. In some cases, a critical component failure can incur catastrophic events and huge economic loss. To maintain machines at high level of reliability, some companies perform time-based preventive maintenance or age-based preventive maintenance to avoid sudden failure of machines. Usually, prev...

Managing spare parts inventories is a challenging task and can benefit considerably from any information on the failure rate of the parts. It has often been considered in the stock control literature that parts' failures are only random, caused by external events which results in the assumption of constant failure rate and therefore the consideration of the Poisson process to represent spare pa...

This abstract is submitted in support of the INFORMS Telecommunications Dissertation Award [1]. Internet backbone networks are evolving to a layered architecture where IP with Multi-Protocol Label Switching (MPLS) network is on top of Wavelength Division Multiplexing (WDM) optical networks. Providing survivability in such networks presents several challenging problems. The requirements for rapi...

In industrial contexts the proportion of the stock range that is devoted to spare parts is often considerable (e.g. Vereecke and Verstraeten, 1994) and small improvements in spare parts management may be translated to substantial cost savings (Eaves and Kingsman, 2004). Many research projects have considered issues related to the management of spare part inventories, but very few studies have e...

http://www.aic.gov.au Adam Graycar Director In 2000, 139,000 motor vehicles were stolen in Australia. About 80 per cent of these were recovered soon after the theft. It is estimated that about threequarters of motor vehicle thefts are opportunistic, stolen for joy-riding or transport, and one-quarter are stolen for profit. Many that are stolen for profit end up as spare parts. Very little is kn...

Abstract: The present investigation deals with the multi component machine repair problem by including the concepts of reneging and interdependent controlled rates. We consider a machining system consisting of M operating units, S1 and S2 warm spares of two kinds and a repair facility having R permanent repairmen and r additional removable repairmen. When all the spares are used and the operati...

In this paper, we present a strongly fault-tolerant design for a d-dimensional hypercube multiprocessor and examine its reconfigurability. The augmented hypercube has a spare node connected to each node of an i-cube and the spare nodes are also connected as a (d i)-dimensional hypercube. By utilizing the circuit-switched capabilities of the communication modules of the spare nodes, large number...

The purpose of this paper is to develop the multiobjective optimization model in order to evaluate suppliers for aircraft maintenance tasks, using goal programming. The authors have developed a two-step process. The model will firstly be used as a decision-support tool for managing demand, by using aircraft and flight schedules to evaluate and generate aircraft-maintenance requirements, includi...

The emerging field of self-repair computing could have a major impact on deployable systems for space missions and defense applications. These systems must survive and perform at optimal functionality for long durations in unknown, harsh, and/or changing environments. Examples of such applications include outer solar system exploration, missions to comets and planets with severe environmental c...