Figure 24. Response of a profile to varying strain (the mid-third 

 of test section in experiments 37 to 47) . Ntunbers by 

 each photo give (in descending order) the experiment 

 number; N; the number of cycles since the beginning of 

 the experiment (n) ; and (D/a)n. (D = 0.55 millimeters.) 



61 



