EURO 2025 Leeds
Abstract Submission

2663. Qualification management in a two steps manufacturing process.

Invited abstract in session MB-51: Multiobjective optimization applications, stream Multiobjective and vector optimization.

Monday, 10:30-12:00
Room: Parkinson B22

Authors (first author is the speaker)

1. Maxime Alouani
LIMOS, Mines Saint Etienne
2. Claude Yugma
Centre Microélectronique de Provence- Georges Charpak, Ecole Nationale Supérieure des Mines de Saint-Etienne
3. Stéphane DAUZERE-PERES
Manufacturing Sciences and Logistics, Ecole des Mines de Saint-Etienne - LIMOS
4. Renaud Roussel
STMicroelectronics

Abstract

In semiconductor manufacturing plants with a wide variety of products, machine qualifications play a crucial role. A qualification certifies that a machine is eligible to perform a given operation of a given product. Qualifications are essential to ensure high yield, production system flexibility and product quality. However, qualifying an operation on a machine and maintaining a qualification is often time-consuming and costly. Thus, when hundreds of different operations can be performed in a workshop with dozens of machines, it is impossible to perform all possible qualifications. Therefore, it is important to determine the best qualifications to optimize both the workload balance of the machines and the total processing time while ensuring demand satisfaction. We extend previous research to optimize the qualifications of two consecutive workshops in the manufacturing route of products which are connected by an automated transportation system. In this context, minimizing transportation times becomes important when optimizing qualifications for at least two reasons. First, unnecessary transport increases the use of vehicles that are not available for other tasks. Furthermore, excessively long transportation times can cause machines to wait for products, which hurts their productivity.

Keywords

Status: accepted

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