Gauge R&R for a Peel Tester (tensile tester)

alonFAI

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#1
Hello Guys,

I am thinking about performing a Gauge R&R for a tensile tester (peel tester).

to the best of my understanding I should perform a nested Gauge R&R for a destructive measurement system.

1. should I perform a variable Gauge R&R? the peel tester yields variable data.

2. what is the tolerance? (I mean for peel testing you usually have only LSL)

3. is a Gauge R&R is actually required? performing it will be beneficial?
why not just perform a process capability study and see whether the peel tester yields low results for known bad units and good results for known good units and compare CPKs

4. also, If I want to do an MSA BIAS Study, how is it done for a peel tester? I mean what I can consider as golden sample? force results has a range..

Thank you very much!
:applause::bonk::agree1:
 
Last edited:
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Miner

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#2
There are several resources for you to review that may answer some of your questions.:

Yes, perform a variable study.
If you have an effective calibration program that calibrates the entire system throughout its range a bias study should not be necessary. If you do perform one, use springs as the golden samples.
 

alonFAI

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#5
Miner thanks a lot!!!!

I do have another question if I may?

Usually when doing a peel testfor a medical pouch u do it for a number of locations over the sealed area (u take samples from the sides and the middle).
So how can I do a gauge rr in this case? It is like each part being inspected inspected has more the one dimension..

Does anyone has by any chance a sample gauge rr done for a peel tester?
 

Miner

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#6
What software do you use?

Minitab has an Expanded R&R Study that allows you to include additional factors in the study beyond parts and operators. Part Location could be set up as an extra factor.

Note: This can be duplicated with any software that will perform a k-way ANOVA. It just takes a little extra effort and some manual calculations.
 

alonFAI

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#7
Miner Hi,

Well maybe I am not fully understand the Gauge R &R.

if I want to do it on a peel tester ,to my best of understanding I need each operator to "peel" each part (pouch) in 3 differents location (as done during regular production) and take this into consideration when calculating the Gauge R&R.

I cannot find any reference online for a similar case, and also the extended Gauge R&R in minitab does not include a similar case..

:applause::thanks:
 

Miner

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#8
When you test during production, does this count as three separate tests, or do you average, or take the middle value?
 

Miner

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#10
Not knowing your process well enough, I cannot be definitive, but you have two options:
  1. Perform three separate R&R studies. One for each position.
  2. Use the Minitab Expanded R&R with the three positions as an additional factor.
 
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