40 

 30 



20 



o 



^ 10 



UJ 



cc 

 o 



UJ 



o 



o 

 o 



X 



X MAXIMUM STRUT STIFFNESS 

 O MINIMUM STRUT STIFFNESS 



O 



X 



oo 



X 



o 



X 



o 



o 



o 



I I I I I 



60 80 100 200 300 400 600 800 



TENSION/POUNDS 



Figure C3 The measured in-air (slruclural) log decrements 8 of the Unijine cable in the 

 DTNSRDC test apparatus. Initial amplitudes are all approximately 0.1 in. (2.5 mm). 



149 



