2002•Asian Journal on QualityRequires access

Dynamic Process Capability Indices

Jing Sun

Abstract

Process capability indices as an important kind of indices are intended to provide single‐number assessments of the inherent process capability to meet specification limits on quality characteristic(s) of interest. In this paper the condition for the application of process capability indices is analyzed. On the basis of process capability indices, dynamic process capability indices as a new kind of indices to show the current process capability are discussed and the condition for the application of dynamic process capability indices is exhibited. Comparison between process capability index and dynamic process capability index and comparison between Dp and Dpk are made and the conclusions provide the approach for process control. According to the requirement of process capability indices provided by customer, quality control based on process capability indices dynamic process capability indices is ciscussed.

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Key concepts: Process capability index, Process capability, Process (computing), Computer science, Reliability engineering, Process control, Work in process, Quality (philosophy)