Title: Multi-objective optimisation of product quality in the manufacture of Ti-6Al-4V prostheses

Authors: Jose Vicente Abellan Nebot, Hector R. Siller Carrillo, Carlos Vila Pastor, Ciro A. Rodriguez Gonzalez

Addresses: Department of Industrial Systems Engineering and Design, Jaume I University, Av. Sos Baynat s/n 12071, Castellon, Spain. ' Center for Innovation in Design and Technology, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur 64849, Monterrey, Mexico. ' Department of Industrial Systems Engineering and Design, Jaume I University, Av. Sos Baynat s/n 12071, Castellon, Spain. ' Center for Innovation in Design and Technology, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur 64849, Monterrey, Mexico

Abstract: This paper presents a multi-objective optimisation procedure for optimising the quality of prostheses and manufacturing productivity. The aim of this procedure is to develop machining performance models through a minimal and progressive Design of Experiment (DoE), which models the variables of interest by linear regressions or Surface Response Models (SRMs). The multi-objective optimisation is based on desirability functions, which are defined according to the relative importance of each variable of interest. The procedure was implemented to optimise a process of manufacturing spherical turned components for Ti-6Al-4V hip prostheses with special requirements as regards surface roughness Ra, Rz and geometrical form tolerance. [Received 12 October 2009; Revised 9 January 2010; Accepted 4 March 2010]

Keywords: titanium alloys; hip prostheses; multi-objective optimisation; desirability functions; surface roughness; DoE; design of experiments; product quality; manufacturing productivity; machining performance; linear regression; response surface methodology; RSM; form tolerances.

DOI: 10.1504/IJMR.2010.033471

International Journal of Manufacturing Research, 2010 Vol.5 No.3, pp.353 - 369

Published online: 02 Jun 2010 *

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