What is the Reference Value when we do Attribute MSA Studies?

S

sandy3444

#11
thank you dear .

yes...it helps me to clear some clouds.what i get from the discussion that first i have to do variable study of parts then do the attribute study. ok?
am i right?
 
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S

sandy3444

#12
dear.... thank you very much ..yes i think it helps me to clear almost clouds.. what i get from this discussion is that i have to do variable study of some parts then get the reference value for attribute MSA than i have to do attribute study of the same parts..
ok.. am i right?
 

antoine.dias

Quite Involved in Discussions
#13
dear.... thank you very much ..yes i think it helps me to clear almost clouds.. what i get from this discussion is that i have to do variable study of some parts then get the reference value for attribute MSA than i have to do attribute study of the same parts..
ok.. am i right?
No, I am sorry, you are not right.
In most cases it is not possible to do a variable study in an attribute test.

- you have to search for the right samples ( as described before )
- decide on the reference ( would the customer accept or reject ? )
- perform the attribute study.

I know, at least I can understand, that the sample in the AIAG manual can cause some confusion ( you are certainly not the first one - and probably not the last one ).:notme:

Best regards,

Antoine
 
S

sandy3444

#14
Thank dear

I am very happy that you want to help me really can you please solve an example for me ...pleaseeeeeeeeeeee..

Suppose:
I want to do an attribute study for a bushing of internal diameter 23.45 to 23.97 with the go - no go gauge, then what will be the attribute study? Please solve it for me because I am in lot of confusion.

If you will solve it for me, then only can I get the right way for another attribute study.

Please can you do it for me?
 
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antoine.dias

Quite Involved in Discussions
#15
Thank dear

I am very happy that you want to help me really can you please solve an example for me ...pleaseeeeeeeeeeee..

Suppose:
I want to do an attribute study for a bushing of internal diameter 23.45 to 23.97 with the go - no go gauge, then what will be the attribute study? Please solve it for me because I am in lot of confusion.

If you will solve it for me, then only can I get the right way for another attribute study.


Please can you do it for me?
Hi Sandy,

First of all you should make a GO-NOGO gauge with the correct diameters to check your internal dia of 23.45 to 23.97
I am not an expert on which dia you should have for the GO side and which dia for the NOGO side of the gauge.
Can anybody jump in here ?

Once you have the gauge, someone in the company ( in most cases the quality department ) should check the samples that are already gathered as previously described. This way the reference value is stated by the quality dept. ( with the "eyes of the customer" ).

Then do the study with preferably 3 inspectors or appraisers and let them check the same samples 3 times in random order.

Then you can calculation of their results in relation to each other and in relation to the reference value like is given in the AIAG manual. You can find an Excel sheet here in the post attachment list ( on top of this page )

Another study would be a visual inspection.
Again gather samples which should be inspected visually.
Let the quality dept define the reference value ( OK or Not OK ) with what they think the customer would accept or reject.
Then do the study


Lots of success,

Antoine
 
S

sandy3444

#16
thanks dear antoine.dias
every time you give me reply.but i think i am a damn fool guy that is why i still not clear the actual process. please i want to solve this problem with out any once help in my company that is why i am posting here my problem. please once you solve this problem up to the reference value the i can solve this completely ..please if the go 23.45 and no go gauge is of the dia 23.95 then please just based on the assumption make a table for me that only i can understand how to find reference value.......
please can you solve it in detail and post the solution for me?
if u can then you really help me a lot .pleaseeeeeeeeeeeee

 
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