Frédéric Bair

A Data Mining Analysis Applied to a Straightening Process Database

Abstract The paper presents the results of a data mining analysis aiming to improve the cost knowledge of the labour intensive straightening process. The data mining approach yields a formula linking the straightening cost to the sections scantlings (plate thickness, dimension and inter-distance of longitudinal stiffeners, dimension and inter-distance of transversal frames) and to other section characteristics.

Optimization of Surface Utilization Using Heuristic Approaches

Abstract A scheduling problem arising in factories producing large building blocks is modelled applying optimization techniques. The application is a shipyard workshop producing prefabricated keel elements. The objective is to maximize the number of building blocks produced in the factory during a certain time window. The solution combines a Guided Local Search heuristic with Fast Local Search techniques. A final discussion explains the additional real-life issues arising in the industrial application and how firm-specific constraints can be conveniently considered by the model.

Multi-criteria Scantling Optimisation of Cruise Ships

Abstract A numerical tool for the optimisation of the scantlings of a ship is extended by considering production cost, weight and moment of inertia in the objective function. A multi-criteria optimisation of a passenger ship is conducted to illustrate the analysis process. Pareto frontiers are obtained and results are verified with Bureau Veritas rules.