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Multiobjective Optimization of Laser Milling Parameters of Microcavities for the Manufacturing of DES

A multiobjective optimization of the laser milling process of microcavities for the manufacturing of drug eluting stents (DES) is presented. The diameter, depth, and volume error are considered to be optimized in function of the process parameters (scanning speed, laser intensity, and pulse frequency). Several experiments are carried out following a design of experiments in a nanosecond pulsed Nd:YAG laser machine on 316 L Stainless Steel as a work material. Two different geometries are studied, and they are considered as another variable for the model. The multiobjective optimization problem is solved by NSGA-II algorithm, and the nondominated Pareto-optimal fronts are obtained. The capability of the process to manufacture within a level of error is also investigated. Relative error capability maps for different scale of features are presented

This work was partially carried out with the grant supports from the European Commission project IREBID (FP7-PEOPLE-2009-IRSES-247476) and the Spanish Science and Innovation Minister project TECNIPLAD (DPI2009-09852)

© Materials and Manufacturing Processes, 2013, vol. 28, núm. 12, p. 1370-1378

Taylor & Francis

Author: Teixidor Ezpeleta, Daniel
Ciurana, Quim de
Rodríguez González, Ciro Ángel
Date: 2013
Abstract: A multiobjective optimization of the laser milling process of microcavities for the manufacturing of drug eluting stents (DES) is presented. The diameter, depth, and volume error are considered to be optimized in function of the process parameters (scanning speed, laser intensity, and pulse frequency). Several experiments are carried out following a design of experiments in a nanosecond pulsed Nd:YAG laser machine on 316 L Stainless Steel as a work material. Two different geometries are studied, and they are considered as another variable for the model. The multiobjective optimization problem is solved by NSGA-II algorithm, and the nondominated Pareto-optimal fronts are obtained. The capability of the process to manufacture within a level of error is also investigated. Relative error capability maps for different scale of features are presented
This work was partially carried out with the grant supports from the European Commission project IREBID (FP7-PEOPLE-2009-IRSES-247476) and the Spanish Science and Innovation Minister project TECNIPLAD (DPI2009-09852)
Format: application/pdf
ISSN: 1042-6914 (versió paper)
1532-2475 (versió electrònica)
Document access: http://hdl.handle.net/10256/8788
Language: eng
Publisher: Taylor & Francis
Collection: MICINN/PN 2010-2013/DPI2009-09852
Versió preprint del document publicat a: http://dx.doi.org/10.1080/10426914.2013.832307
Articles publicats (D-EMCI)
info:eu-repo/grantAgreement/EC/FP7/247476
Is part of: © Materials and Manufacturing Processes, 2013, vol. 28, núm. 12, p. 1370-1378
Rights: Tots els drets reservats
Subject: Làsers -- Aplicacions industrials
Lasers -- Industrial applications
Tecnologia mèdica
Medical technology
Title: Multiobjective Optimization of Laser Milling Parameters of Microcavities for the Manufacturing of DES
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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