definition medium and deep funnel

[slevin86]

Good morning.
I have to define acceptable limits for erichsen funnel test, but I have difficulty finding the suitable material.
on the norms of our customer (and in relation to erichsen) we do not find traces of acceptability limits.

can you advise me texts/materials that can help me? I found some chart showing the ie index according to the sheet thickness... but not knowing the source, this chart refers to different cases:

medium, long and deep funnel
not conosc of the objective criteria to be used to qualify the various cases.. .


Thank you for your help

 

[SHIREN]

Good morning.
I have to define acceptable limits for erichsen funnel test, but I have difficulty finding the suitable material.
on the norms of our customer (and in relation to erichsen) we do not find traces of acceptability limits.

can you advise me texts/materials that can help me? I found some chart showing the ie index according to the sheet thickness... but not knowing the source, this chart refers to different cases:

medium, long and deep funnel
not conosc of the objective criteria to be used to qualify the various cases.. .


Thank you for your help

Hi.
I cannot help you
It's not exactly my job.
we expect some response from some users who have a specific experience
However I invite you to a search in the forum
something that approaches the prob. you will findhttp://www.cad3d.it/forum1/showthread.php?3594-imbutitura-profondaThank you very much