Procedure on how to conduct a Destructive MSA (Gage R&R) for Force Gages

[Arvin]

Hello !


I need help. Does anybody had a good procedure on how to conduct a Destructive MSA(GRR) for Force Gages ? I have a 500 lbs. Force Gage that we use to pull test our wire splices and currently we do only calibration on this gage so far no auditor is saying this is not enough.

Thanks,

arvin

 

[M Greenaway]

Arvin

Apparently the third edition MSA manual deals with this very subject.

 

[Arvin]

Thank You for the help

 

[Atul Khandekar]

I too am waiting for my copy of MSA third edition mannual.

Arvin,

There are several threads here that discuss this topic. You could also check out www.spcpress.com for Don Wheeler's books on the subject.

IMO, the method for calculating R&R for destructive test is not really different from the one used for non-destructive tests. The main problem with destructive testing is the choice of parts. Since tests cannot be replicated, samples should be chosen from a homogeneous lot with an assumption that consecutively produced samples or samples taken close to one another would be almost identical. So it can be said that the test is ‘replicated’ using identical (if not the exact same) part.

There is one more method suggested by some. This is called ISOPlot and was developed by Dorian Shainin ( who also developed Pre-control). More information is available from https://www.shainin.com/ . AIAG manual however, does not recognize or even mention Shainin.

Hope this helps!