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As everyone else I am having hard time to implement most of the requirements of the MSA, especifically on Gage R&R for attributes using the analytical Method, since my company is in the automotive division, this is the one recommended to be used by the MSA.
The problem I have is that I need to know the criteria to accept this kind of studies, in a variable Gage R&R we have that the %GRR should be less then 10% and if it's less than 30% might require improvement, and will be rejected if is above 30%.
But for the analytical method on page 136 it gives you only criteria, that the "t" value should be less than 2.093 to know if the Bias is significantly different from zero, but at the end does not say what to do with the repeatability, for this you have the formula with a value, how to judge when the repeatability is small or what criteria we should use to considered it high or low or when to rejected the study?
Thanks in advance for your help?
Regards....
PS Very nice page I found it by Luck and I think it will help me to improve my MSA and I will be able to help others.
The problem I have is that I need to know the criteria to accept this kind of studies, in a variable Gage R&R we have that the %GRR should be less then 10% and if it's less than 30% might require improvement, and will be rejected if is above 30%.
But for the analytical method on page 136 it gives you only criteria, that the "t" value should be less than 2.093 to know if the Bias is significantly different from zero, but at the end does not say what to do with the repeatability, for this you have the formula with a value, how to judge when the repeatability is small or what criteria we should use to considered it high or low or when to rejected the study?
Thanks in advance for your help?
Regards....
PS Very nice page I found it by Luck and I think it will help me to improve my MSA and I will be able to help others.