A
In reading the MSA book, the ANOVA method as a general rule of thumb identifies up to 3 appraisers, 10 parts & up to 3 trials.
I've looked for information relating to GR&R of Test Stands and was unable to find any useful tips. We have a single Test stand designed to locate and automatically test 10 parts at the same time. The test stand is operated by one person who loads the parts into each of the test locations and presses a button to start the test sequence. The test stand measures output voltage.
For each of the "Studies" 3 trials are intended. My assumptions would be:-
# Trials = 3, therefore K1=3.05
# Appraisers = 1, AV=0?
Study 1 -#Test stand locations=1, #Parts=10, K3 = 1.62
Study 2 -#Test stand locations=10, #Parts=1, K3 =?
Study 3 - #Test stand locations=10, #Parts=10, K3 = 1.62
Is Study 1 & 2 sufficient and what would the testing of only 1 part in all 10 locations tell me? and what value would I assign for K3?
Should I modify Study 2 to include 3 Test locations for 10 parts and use Appraisers = 3 (assume each of the 3 selected Test Stand locations is an "Appraiser"?
Or should I just go ahead and complete study 3 first of all. Completing Study 3 would take care of completing Study 1 & 2 - the data could be just extracted as needed but it would also generate a lot of data that could not easily be entered into the standard ANOVA format.
I'd like to understand why I may be making this more complicated than is probably necessary.
I've looked for information relating to GR&R of Test Stands and was unable to find any useful tips. We have a single Test stand designed to locate and automatically test 10 parts at the same time. The test stand is operated by one person who loads the parts into each of the test locations and presses a button to start the test sequence. The test stand measures output voltage.
For each of the "Studies" 3 trials are intended. My assumptions would be:-
# Trials = 3, therefore K1=3.05
# Appraisers = 1, AV=0?
Study 1 -#Test stand locations=1, #Parts=10, K3 = 1.62
Study 2 -#Test stand locations=10, #Parts=1, K3 =?
Study 3 - #Test stand locations=10, #Parts=10, K3 = 1.62
Is Study 1 & 2 sufficient and what would the testing of only 1 part in all 10 locations tell me? and what value would I assign for K3?
Should I modify Study 2 to include 3 Test locations for 10 parts and use Appraisers = 3 (assume each of the 3 selected Test Stand locations is an "Appraiser"?
Or should I just go ahead and complete study 3 first of all. Completing Study 3 would take care of completing Study 1 & 2 - the data could be just extracted as needed but it would also generate a lot of data that could not easily be entered into the standard ANOVA format.
I'd like to understand why I may be making this more complicated than is probably necessary.