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

[alonFAI]

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!

 

[Miner]

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

• See my blog page on Non-replicable studies.
• See my blog page on one-sided tolerances.

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.

 

[Marc]

Miner - What search terms did you use?

I had to remove the link you put in because of Search Links in Posts - Putting *Forum* 'Search' Links for Forum Threads within Posts - Awkward, I know. Sorry. Post attachment searches work differently and the url can be copied and pasted.

 

[Miner]

I did an advanced search using my ID and Instron within the MSA forum.

 

[alonFAI]

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]

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]

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..

 

[Miner]

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

 

[alonFAI]

basically 3 seperate tests

Sent from my LG-D855 using Tapatalk

 

[Miner]

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.