Thanks a lot for replying guys. As always you are very helpful.
The wraparound bend test seems like the right solution for multiple use. I once built one for aluminium, I might change the design to meet the current situation.
If I understand the wraparound figure (4.12 on d1.1 2015) correctly, the bend mandrel changes only according to the material's yield strength and not it's thickness. That's interesting.
I'm still trying to figure out what does the sentence:
"Any convenient means may be used to move the plunger member with relation to the die member" (4.9.3.1). When dealing with thin plates, in order to avoid sliding/distance between the specimen and the plunger, what means can one use? Spacers laying between the specimen and the shoulders?
Shay