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How we can calculate stress intensity factor for bimaterial interface

Submitted by kaslantas on

Hi friends,

I would like to calculate stress intensity factor for bimaterial interface using finite element method. Do you have any suggestion about it? Actually I know a method. According to this method,

1-obtain crack face displacement using numerical solution

2- use dundur parameter 

 

Is this method is correct/enough?

 

As you know Franc2D code calcuate SIF for mode I and mode I. But I do not know this code can calculate SIF for bimaterial interface? 

Thanks 

We need a travelling long distance microscope for measurement of crack length

Submitted by kaslantas on

Hi

I am looking for a travelling long distance microscope for measurement of crack length. I will use this microscope on Instron fatigue test machine. I found some long distance microscopes on the web. But they are not appropriate for us. I attached a figure showing the travelling microscope that I would like to buy.

Do you have any suggestion about it? Where can I find it?

Thanks