Impact Testing
Impact Testing
(OP)
What if the effect of the dimensions of a test specimen to the impact energy during impact testing?
I mean: If the thickness is decreased two times, will the impact energy also be decreased two times?
Has anybody any idea about this?
I mean: If the thickness is decreased two times, will the impact energy also be decreased two times?
Has anybody any idea about this?





RE: Impact Testing
RE: Impact Testing
I'm facing a situation having to do with this. My sense says that dimensions and impact resistance are not proportional but when I searched to find relevant articles to support this attitude (ASME, etc), I found nothing.
I' appreciate anyone who can give me a clue.
Thanks
RE: Impact Testing
and I do not see why the equation
Ss = F/A does not apply. So from the
equation, if the A (area) doubles,
the Force would be doubled to shear
the part.
RE: Impact Testing
RE: Impact Testing
There is a nonlinear relationship that is dependent on strain hardening coefficient of the specific material. I would be glad to offer some guidance with regard to literature sources if you can provide more detail.
Mike
RE: Impact Testing
Regards
Viktor
RE: Impact Testing
Thank you very much for your advice.
Can you please send me a copy of this paper?
Regards
Dimitris
RE: Impact Testing
Supplement to the previous one: My e-mail address is diretz@hotmail.com
Redards
Dimitris
RE: Impact Testing
This is a book and so I cannot send it via e-mail.
Regards
Viktor
http://viktorastakhov.tripod.com
RE: Impact Testing
RE: Impact Testing
Another thought--somebody please help me on this term if I am wrong. I recall that this is known as the "Theory of Verisimilitude" (but I could be wrong on the term). This is commonly used in fluids and structures testing. Essentially, if one can qualify the dependency of terms for specific function, then one can appropriately scale terms as the model scales. This is commonly taught in an undergrad fluids course.
If you could describe the behavior using a basic functional relationship, you could apply this and arrive at the equivalent energy. However, this may not work for your specific problem.
What are the dimensions of the specimen, and are there notches, etc? Also, is the material brittle or ductile? If it is ductile, it would definitely be hard to characterize the effect on the energy due to this change.
Brad
RE: Impact Testing
length: nominal
width: 5 (V notch width: 5mm) mm
thickness: 10mm
Thanks
RE: Impact Testing
10 mm x 7.5 mm 0.833
10 mm x 5 mm 0.667
10 mm x 2.5 mm 0.333