Frequent Product Changes

Thickness Verification

Zero Defect Requirements

High Energy Costs

Low Profit Margin

Processes change and measurements of the products produced change, due to several factors. In order to control this change and produce a product that is in specification, the process and the products produced, must be measured. Some variation is controllable, some is not. "Variation of the mean" can be caused by wear, drift, human error as well as by changes in materials and process inputs. Variation of the mean is controllable. Another source of variation, is random and caused by chance. This variation is not controllable, and is called "variation about the mean". Attempting to manage a process without knowing the type of mean variations will result in constant process changes, poor quality, wasted material, energy and lost profits. It is impossible to know the difference between these variations without taking continuous measurements. Data from these two variations will be intertwined. If a process is initially setup based on a manual measurement derived from an "about the mean variation" the process outcome will be wrong most of the time. If a process, that is running, is adjusted based on an "about the mean variation", it will also be adjusted the wrong way. Using UAI on line thickness and distance gages allows the process to be set to correct target thickness and to make process adjustments based on true "variation of the mean". UAI distance/thickness gages and bond measurement systems provide a solution to the variation problem in numerous industries and applications.

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