475864_en-US

liliconcom

Nested MSA question

Hi All,

 

I have a question about Nested MSA. I need to understand what is the Part-to-part variation and the measurement system variation. But...

• The parts are destroyed once measure by the said machine
• There is some variation in every part and the measurement system in question is the only one that can measure it
• We know the measurement system is not stable

So, how can I calculate if there is a systematic variation (error) that the measurement system is causing? Any guidance on this would be deeply appreciated!

AnalyticsWindowsRe: Nested MSA question

We do have a Golden Sample or ideal specification for the parts in case that makes a difference...

Re: Nested MSA question

Here are my thoughts:

1. It will be impossible to separate measurement errors from part-to-part variation in a destructive test.

2. How can you know bullets 2 & 3?

3. The strategies to handle this situation are summarized/described in the attached document.