MSA (Measurement System Analysis) on Multi-Phase Measurement System

K

Kelly W

#11
Ah, I had failed to record which side they were on. Updated workbook (with corrected date, too) attached. We don't have any specified tolerance.
 

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Miner

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#12
I did not have time to do a full analysis, but I did get a chance to start it.

Conclusions so far:

  • There is no statistical difference between sides of the test chamber
  • There is a statistical difference between operators, but it is very small compared to the differences between parts.
I will finish the analysis tomorrow and get back to you.
 

Miner

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Staff member
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#13
Sorry for the delay. It has been a hectic week.

In my last post I stated the conclusions so far:

  • There is no statistical difference between sides of the test chamber
  • There is a statistical difference between operators, but it is very small compared to the difference between parts
After verifying that there was no effect due to side of the test chamber, I ran the data through the standard crossed R&R study.

  • Total R&R = 8.2%.
    • Repeatability = 7.47%
    • Reproducibility = 3.4% Bob and John were virtually identical, but Kelly had significantly more variation in results, particularly on parts 4, 9 & 11.
I believe that your original concern back at the start of this thread was on whether you could perform an MSA on this measurement system in response to a customer request. The answer is yes, and fortunately for you the results are quite good.
 
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