A measurement system analysis approach for hard-to-repeat events

When measurements are nonreplicable, assessing the measurement system is a difficult task and cannot be done using the conventional gauge repeatability and reproducibility methods. This is due to the fact that the object measured is affected by the measurement and/or changes with time. This article describes an alternative method that can be used to study the repeatability and reproducibility of a measurement system in case the measured quantity varies over time. The essence of the method is that each part is measured simultaneously by multiple gauges