Dear Professor Uebel

Thank you very much for your response. I would be very pleased if you can add the logic and/or the reasons behind your agreement.

In the open literature the stress intensity factor, based on theory of elasticity, is "infinite", while I my logic and reasoning led to the finite value of "near 1.7"!

the problem is down to earth one, and is a challenge.

So, your further discussion, agree or disagree, would be appreciated.