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Background In a highly competitive market, a plastic parts company leveraged Lean Six Sigma methodologies, particularly Process Capability Analysis (Cpk and Ppk), to analyze supplier performance and ...
One of the fundamental assumptions in process capability analysis is that the process must be in statistical control. Without statistical control, the process is not predictable, the concept of a ...
Such a process capability limit can be easily and quickly calculated for all equipment groups for any possible desired Cpu (Table II). A process capability limit provides a single limit for target ...
This OD turning process (as do most manufacturing processes) approximates a normal distribution or bell-shaped curve. Here, about 68.7% of parts are within ± from the average, 95% within ±2 ...
Tests for normality are particularly important in process capability analysis because the commonly used capability indices are difficult to interpret unless the data are at least approximately ...
For example, research has detailed methods whereby fuzzy data is utilised to estimate process parameters, ... Process Capability Analysis Using Interval Type-2 Fuzzy Sets.