Supplier Selection for Multiple-Characteristics Processes with One-Sided Specifications

Abstract In this paper, we consider the supplier selection problem for normally distributed processes with multiple independent characteristics based on process capability index CpU . A two-phase testing procedure based on the quotient of two statistics is proposed to deal with the problem. We obtain the sampling distribution and the probability density function of the quotient. Several tables of the critical values for the testing procedure and decision making are provided. The required sample sizes for various capability requirements, magnitude of difference of two suppliers, and given power are also presented. A real application on TFT-LCD manufacturing processes is presented to demonstrate the efficacy of the proposed method.

[1]  D. Grau.  On the Choice of a Capability Index for Asymmetric Tolerances , 2010 .

[2]  Daniel Grau,et al.  Process Yield, Process Centering and Capability Indices for One-Sided Tolerance Processes , 2012 .

[3]  Wen Lea Pearn,et al.  Supplier selection for one-sided processes with unequal sample sizes , 2009, Eur. J. Oper. Res..

[4]  Wen Lea Pearn,et al.  Select better suppliers based on manufacturing precision for processes with multivariate data , 2009 .

[5]  Wen Lea Pearn,et al.  Measuring manufacturing capability for couplers and wavelength division multiplexers , 2005 .

[6]  Hui-Nien Hung,et al.  An effective powerful test for one-sided supplier selection problem , 2011 .

[7]  Sudhansu S. Maiti,et al.  On Generalizing Process Capability Indices , 2010 .

[8]  Wen Lea Pearn,et al.  An Extension of the Product Acceptance Determination for One‐Sided Process with Multiple Characteristics , 2013, Qual. Reliab. Eng. Int..

[9]  Wen Lea Pearn,et al.  A Note on “Capability Assessment for Processes with Multiple Characteristics: A Generalization of the Popular Index Cpk” , 2013, Qual. Reliab. Eng. Int..

[10]  Samuel Kotz,et al.  An overview of theory and practice on process capability indices for quality assurance , 2009 .

[11]  Bong-Jin Yum,et al.  A bibliography of the literature on process capability indices: 2000–2009 , 2011, Qual. Reliab. Eng. Int..

[12]  Cheng Peng.  Parametric Lower Confidence Limits of Quantile-Based Process Capability Indices , 2010 .

[13]  W.L. Pearn,et al.  Photolithography Control in Wafer Fabrication Based on Process Capability Indices With Multiple Characteristics , 2009, IEEE Transactions on Semiconductor Manufacturing.

[14]  W. L. Pearn,et al.  Sample size determination for production yield estimation with multiple independent process characteristics , 2009, Eur. J. Oper. Res..

[15]  D. Grau.  New Process Capability Indices for One-Sided Tolerances , 2009 .

[16]  A. Parchami,et al.  Testing the Capability of Fuzzy Processes , 2009 .

[17]  Y. T. Tai,et al.  An Effective Powerful Test for Supplier Selection Evaluation with Multiple Characteristics , 2011 .

[18]  N. L. Johnson,et al.  Distributional and Inferential Properties of Process Capability Indices , 1992 .

[19]  Wen Lea Pearn,et al.  Two Tests for Supplier Selection Based on Process Yield , 2011 .