Fig. 6 The corresponding profiles of Specimen I and the 
CODi, determined near the fatique crack front (arrows). 
(a) profile 1, (b) profile 2, (c) profile 3. 
  
  
  
  
  
  
  
10pm 
  
  
10pm 
  
  
  
  
  
  
  
  
  
  
       
Fig.7 The corresponding profiles of Specimen II, left 
side. The specimen was precracked and broken up 
at -196? C. The CODi value is smaller than the accuracy 
of the measurement. (a) profile 1, (b) profile 2.