Fuzzy control charts represent a significant evolution in Statistical Process Control (SPC) by addressing intrinsic uncertainties in measurement and human evaluation that classical approaches often ...

The extent to which products meet specifications needs to be systematically monitored in a production process. Product quality will typically be defined by two quantities: deviations from stated ...

Process inspection schemes using control charts with warning lines are considered and the properties for some schemes based on the observations from the last few samples are evaluated. Tables of ...