Small Tension Test Specimens
Small Tension Test Specimens
(OP)
Has anyone ever taken a tensile test specimen (ASTM E8) from a broken fracture specimen (ASTM E1820). It appears that some of the small specimens could be taken from a broken half of a CT specimen.
Is there any reason why you could not do such a thing.
Any test houses in the US who have done this?
Thanks
Is there any reason why you could not do such a thing.
Any test houses in the US who have done this?
Thanks





RE: Small Tension Test Specimens
There is no fundamental reason why you couldn't make such a specimen.
I would ask Westmoreland - they are the leader in fracture mechanics testing.
http://www.wmtr.com/
Regards,
Cory
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RE: Small Tension Test Specimens
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Plymouth Tube
RE: Small Tension Test Specimens
Would the small specimen give a reasonable elastic modulus?
RE: Small Tension Test Specimens
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Plymouth Tube
RE: Small Tension Test Specimens
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Small Tension Test Specimens
Recrystallization Annealed per SAE AMS-H-81200A
Size of typical CT specimen:
Thickness = 1"
W = 2"
Would a different type of specimen be better?
Thanks
RE: Small Tension Test Specimens
There are beam and sheet specimens used for fracture mechanics that might be more suitable for subsequent tension specimen removal.
Regards,
Cory
Please see FAQ731-376: Eng-Tips.com Forum Policies for tips on how to make the best use of Eng-Tips Fora.
RE: Small Tension Test Specimens
In my opinion, material for tensile testing should be as close to what was either in service or if new material, as is. Attempting to obtain tensile data from "test used" specimens is not good engineering practice. I have seen reconstituted specimens from CVN testing where tabs are welded, but this is remote from the notch and is still subject to scrutiny, in my opinion.
RE: Small Tension Test Specimens
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Plymouth Tube
RE: Small Tension Test Specimens
We are going to simply take more standard specimens from the fracture specimen parent stock.