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 ...

In the manufacturing world, the word “retrofit” many times is feared to mean “lost production.” In other words, plants—or at least parts of plants—must be shut down for equipment to be upgraded. And ...

Control charts have been widely used for monitoring production processes and identifying assignable causes of variability. Many papers investigate the application of control charts in different ...