10.0 







X MAXIMUM 



STRUT STIFFNESS 









O MINIMUM 



STRUT STIFFNESS 



7.0 



— 











6.0 



— 



X 









5.0 



- 



o 

 c 



> 



o 







4.0 



— 











lO 



O 







^o 







X 3.0 













to 













^ 







o 







\- 













S 2.0 











X 





2 



UJ 









o 



O 



a: 













o 













UJ 













o 











o 



o 











X 



O 













_) 













1.0 



— 









X 



0.8 



— 











0.6 



1 



1 1 1 



1 



1 



1 1 



80 100 200 300 400 

 TENSION/POUNDS 



500 



Figure C4 The measured in-air (structural) log decrements S of the DAS cable in the 

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



150 



