[Abaqus] How to measure the distance of failed cohesive elements (crack length) from load line for every time increment?

Hi

I have a working DCB model with embedded cohesive elements. This is done in Abaqus/CAE standard using nonlinear analysis.

However I'm having trouble finding an efficient way of measuring the distance of failed cohesive elements from the load(displacement) line for evey time increment in abaqus. Its possible to do this manually using the 'Query information' tool for every single time increment but for a model with more than 100 frames this method is not very good. 

Is there a way to ask abaqus to record the distance of the closest failed cohesive element for each time increment. I'm thinking of an IF function of some sort. I'm not familiar with python script. Is it possible to write a function in python that extracts such an information I need. 

Failure of a cohesive element could be found by either checking the displacemnt of its nodes is non zero, or the traction is zero ect.

Thanks in advance for the help!

Mehdi