Strategies in spare parts management using a reliability engineering approach

Sheikh, A.U.H.; Callom, Frank L.; Mustafa, Salim G.

doi:10.1016/0167-188x(91)90018-w

Cited by 15 publications

(10 citation statements)

References 1 publication

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“…If there is a fixed operating time t, (a warranty period, say), the number of spares needed is then the smallest integer greater than t/T. The spare part problem is another issue of interest in practice (Sheikh et al, 1991).…”

Section: Maintenance Decision-makingmentioning

confidence: 99%

Exponential approximation for maintained Weibull distributed component

Xie

Kong²,

Goh³

2000

Journal of Quality in Maintenance Engineering

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Exponential distribution is widely used in reliability and maintainability studies although it is well known that the constant failure rate assumption may not be valid. The purpose of this paper is to investigate the use of exponential distribution as an approximation. In fact, for components undergoing regular maintenance or replacement, the exponential assumption can be acceptable. In this paper, the exponential approximation for regularly maintained Weibull component is studied. The approximated exponential distribution using the average failure rate is compared with the exact reliability. The asymptotic relative error is derived, which can be used to adjust the exponential approximation when needed. Based on the framework of exponential approximation for Weibull distributed components, the problems of decision‐making regarding the optimal maintenance time and spare allocation are also addressed.

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Section: Maintenance Decision-makingmentioning

confidence: 99%

Exponential approximation for maintained Weibull distributed component

Xie

Kong²,

Goh³

2000

Journal of Quality in Maintenance Engineering

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“…which can be integrated in a computerized material requirement planning system to determine the number of brake assemblies needed for a specified planning horizon, in terms of either the number of flights or the corresponding number of anticipated landings (and take-offs). The forecast can be based upon (a) a schedule of brake assembly replacement policy operating at an optimal risk level [9], or (b) a wear/failure replacement strategy in a renewal theory framework [10].…”

Section: Reliability Analysis Of Brake Assembly Wear/failure Data In mentioning

confidence: 99%

Reliability analysis of aeroplane brakes

Al‐Garni

Sahin

Al-Ghamdi

et al. 1999

Qual. Reliab. Engng. Int.

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“…For example, Hall and Clark [3] discuss the effect of supply of spare parts on overall system availability. A methodology for calculating the spares requirement for a non-repairable system, based on cost and criticality of failure considerations, is developed by Sheikh et al [31,32] who assert that to date, less formal methods of sparing have not worked, leading to overstocked plants, a low spares turnover rate, and high costs of spares stockage. Arbaretier [33] presents a model which determines the optimal distribution of spare parts according to different criteria such as availability and cost.…”

Section: Spares Provisioningmentioning

confidence: 99%

Achieving quality through supportability ‐ part I: concepts and principles

Smith¹,

Knežević²

1996

Journal of Quality in Maintenance Engineering

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IntroductionTo be competitive in today's increasingly difficult marketplace, companies must develop products which are both cost effective, in terms of their life-cycle costs, and of a high quality [1][2][3][4][5]. Initial customer purchase is dependent on products meeting such specifications, and any subsequent failure of the product to live up to customer expectations will limit further sales due to customer dissatisfaction. In many situations the two criteria of cost-effectiveness and quality are linked inextricably. For example, Brennan and Stracener[5] define quality to be "giving the customer the best value within the constraints of their requirements", where "value" may well encompass cost considerations. An alternative definition of quality [6] is "the totality of features and characteristics of a product, process or service that bear on its ability to satisfy stated or implied needs". Once again, cost-effectiveness is likely to be one of the performance characteristics by which an item or product is judged. According to Bentley[7], the reliability of a product can be defined as "its ability to retain its quality", or "the projection of initial quality into future time". As a result, quality and reliability, together with associated characteristics such as maintainability and supportability, are closely related.Until relatively recently, product quality was considered as a consequence of the product design. However, the Japanese emphasis on quality has led to a worldwide adoption of a technique known as total quality management (TQM), in which quality serves as a driver of, rather than a result of, product design. Implementation of this strategy leads to significant improvements in product quality [7][8][9]. Indeed, according to , "Organisations with successful quality improvements can enjoy significant competitive advantages". Under the TQM philosophy, characteristics such as reliability, maintainability, supportability (RMS) and cost-effectiveness can no longer be incorporated into the product at an intermediate stage of product development. Instead it is widely accepted that in order to improve the quality of a product, an integrated product development approach should be taken, whereby a design trade-off driven by reliability, maintainability and supportability issues is

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Strategies in spare parts management using a reliability engineering approach

Cited by 15 publications

References 1 publication

Exponential approximation for maintained Weibull distributed component

Exponential approximation for maintained Weibull distributed component

Reliability analysis of aeroplane brakes

Achieving quality through supportability ‐ part I: concepts and principles

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