Quote from: SOMANATH MOHANTY on August 07, 2018, 03:16:00 PM
1- suppose I want to carry out any fracture experiment in any material then it can be modelled by lEFM/EPFM. Is there any strength related perticular parameter that distinguish both of them prior to experiment?
If I understand your question, you want to test a material and know before you test it if the conditions of LEFM or if EPFM conditions prevail?
The answer is no, you cannot. If you look at the ASTM test procedure (metals) for conducting plane strain fracture toughness testing (KIc) then there are several conditions that must be met that can only be determined after the test has been conducted.
However, you can look at the ASTM test procedure for JIc testing, which assumes EPFM, and use that instead.