Optimization of a product performance using mixture experiments including process variables

L.H.A. Dal Bello and A. F.C. Vieira

Journal of Applied Statistics, 2011, vol. 38, issue 8, 1701-1715

Abstract: This article presents a case study of a chemical compound used in the delay mechanism to start a rocket engine. The compound consists in a three-component mixture. Besides the components proportions, two process variables are considered. The aim of the study is to investigate the mix components proportions and the levels of process variables that set the expected delay time as close as possible to the target value and, at the same time, minimize the width of prediction interval for the response. A linear regression model with normal responses was fitted. Through the model developed, the optimal components proportions and the levels of the process variables were determined. For the model selection, the use of the backward method with an information criterion proved to be efficient in the case under study.

Date: 2011
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DOI: 10.1080/02664763.2010.518370

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