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An Integrated Approach Based on Principal Component & Multivariate Process Capability for Simultaneous Optimization of Location & Dispersion for Correlated Multiple Response Problems

Summary: Product quality is generally defined by a family of critical characteristics, or so-called responses. In this article, a new integrated approach is proposed that has the ability to reduce the response space dimensionality and also considers both location and dispersion effects in a correlated multiple response optimization problem. The proposed approach uses a principal component (PC)-based multivariate process capability index (MCpmk;PC) as an objective function for optimization. In addition, the nonlinear search algorithm can efficiently determine the best trade-off solution in the orthogonal PC space. Three different cases are selected to illustrate the effectiveness of the new proposed approach compared to a few selected existing approaches.

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  • Topics: Project Management, Quality Tools
  • Keywords: Dispersion, Principal components, Process capability (Cp), Process capability index (Cpk), Multivariate capability indices, Product quality
  • Author: Bera, Sasadhar; Mukherjee, Indrajit;
  • Journal: Quality Engineering