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Statistical Analysis of Process Capability Studies

P. Nagesh, M.S. Prabhuswamy

Abstract


The process capability analysis helps in quantifying the process variability and assists manufacturing by eliminating or greatly reducing the variability. It is also required to analyze the manufacturing process further if the process capability ratio is less than the recommended minimum value. This helps to reduce further variability and to initiate the disposition, corrective and preventive action. Using variance study the significant factor that affects the process capability can be identified. Initial pilot study of the manufacturing process can be conducted and further investigation can be done to know the factors and its interactions that affect the process capability. Further investigation indicates the predominant factor that affects the process capability. This study helps process management and identifies opportunities for improving quality and operational performance of the manufacturing process.

Keywords


Process capability, Process capability ratio, Interactions, variance study

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