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relationship between CTOA and SIF

Submitted by banafsh84 on

Hi 

The problem I have recently faced is to find a relationship

between the amplitude of crack tip opening angle (CTOA) in a breathing crack

and the stress intensity factor (SIF) in bending displacement of a cantilevered

non-propagating cracked beam. Actually what I am looking for is the analytical

equation which relates CTOA to SIF; something like the one that exists for

crack tip opening displacement (CTOD).

I checked both Andreson’s and Broek’s fracture books and also lots of papers in

the related area but did not find the equation I am looking for. I would be

thankful if anyone could help me with this or introduce me some references. Your answer

is highly appreciated.