Inventory Management in Railway Sleepers: A Simulation Model for Replacement Strategies

Topics:
Inventory Management
Tags:
Inventory Management,
Management,
Queensland University Of Technology,
Replacement Problem,
Strategy
Source:
Queensland University of Technology

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Overview: This paper describes the development of a simulation model to assess the inventory requirements of alternative rail sleeper replacement strategies. The main aim of the model is to determine the optimal replacement strategy, given replacement costs and resultant train operating cost benefits. The replacement problem has been considered under the following assumptions: The time to failure under constant stress follows a Weibull distribution and the scale parameter is a function of stress level and the three stress levels under normal (all adjacent units are good), medium-stress (one adjacent unit has failed) and high-stress conditions (two adjacent units are failed) are considered. The cumulative exposure model is used to model the failure distributions.

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Format: PDF | Size: 119KB | Date: Nov 2005 | Pages: 10

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