Until now, three conceptions of a similar kind have been used to
characterise a process; process performance, process behaviour and
process capability. Some clarifications are in order to avoid confusions.
“Process performance” refers to the accuracy of the process when
creating a final part dimension or an IPW dimension.
“Process behaviour” is a representation of the manner, or action, of
the manufacturing process.
“Process capability” is dedicated to the established conception of PCI
where a tolerance range is related to a statistical representation of the
process behaviour.