Publications
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A hybrid condition-based maintenance policy for continuously monitored components with two degradation thresholds KU Leuven
Condition-based maintenance (CBM) makes use of the actual condition of the component to decide when to maintain and/or replace the component, thereby maximising the lifetime of the machine, while minimising the number of service interventions. In this paper we combine CBM on one (monitored) component, with periodic preventive maintenance (PM) and corrective maintenance (CM) on the other components of the same machine/system. We implement two ...
A hybrid condition-based maintenance policy for continuously monitored components with two degradation thresholds KU Leuven
Condition-based maintenance (CBM) makes use of the actual condition of the component to decide when to maintain and/or replace the component, thereby maximising the lifetime of the machine, while minimising the number of service interventions. In this paper we combine CBM on one (monitored) component, with periodic preventive maintenance (PM) and corrective maintenance (CM) on the other components of the same machine/system. We implement two ...
Numerical study of inventory management under various maintenance policies KU Leuven
Capital assets, such as manufacturing equipment, require maintenance to remain functioning. Maintenance can be performed when a component breaks down and needs replacement (i.e., corrective maintenance), or the maintenance and part replacement can be performed preventively. Preventive maintenance can be planned on a periodic basis (periodic maintenance), or it can be triggered by a certain monitored condition (condition-based maintenance). ...
Differential evolution to solve the lot size problem in stochastic supply chain management systems KU Leuven
An advanced resource planning model is presented to support optimal lot size decisions for overall performance improvement of real-life supply chain management systems in terms of either total delivery time or total setup costs. Based on a queueing network, a model is developed for a mix of products, which follow a sequence of operations taking place at multiple interdependent supply chain members. At the same time, various sources of ...
Network and contract optimization for maintenance services and remanufacturing KU Leuven
Implementing comprehensive service contracts and sustainable supply chains are two recent trends that create the opportunity to develop maintenance contracts with an uptime guarantee for the customer and a remanufacturing process for removed parts. This involves management decisions on the design of the contract (price, uptime guarantee and overhaul interval) and the logistics network (facility locations, capacities and inventories with given ...
Characterizing order processes of continuous review (s,S) and (r,nQ) policies KU Leuven University of Antwerp
We provide a novel approach to characterize the order process of continuous review (s,S)(s,S) and (r,nQ)(r,nQ) inventory policies, and study the impact of the batching parameter (the value of Q or S-sS-s) on the variability in the order process. First, we characterize the distribution of the time between orders, as well as the distribution of order sizes. We find that the coefficient of variation (cv) of the time between orders is smaller than ...
Coordinating lead times and safety stocks under autocorrelated demand KU Leuven University of Antwerp
We consider a supply chain in which orders and lead times are linked endogenously, as opposed to assuming lead times are exogenous. This assumption is relevant when a retailer's orders are produced by a supplier with finite capacity and replenished when the order is completed. The retailer faces demands that are correlated over time - either positively or negatively - which may, for example, be induced by a pricing or promotion policy. The ...