Table 4 Classification of crack types and failure modes of different specimens.

From: AE-based classification and fracture process analysis of flawed marble with stress intensity factor validation

Specimens

Crack types

Failure mode

T-A

T-B

T-C

T-D

S-A

S-B

M-A

M-B

I

10–15°

   

✔

     

Tensile failure

10–30°

 

✔

 

✔

    

✔

T-S combined failure

10–60°

  

✔

  

✔

   

T-S combined failure

10–75°

    

✔

   

✔

Shear failure

10–90°

       

✔

✔

T-S combined failure

5–45°

✔

 

✔

  

✔

   

T-S combined failure

10–45°

✔

✔

  

✔

    

T-S combined failure

15–45°

✔

    

✔

  

✔

T-S combined failure

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