NAVWEPS 00-EOT-80 
OPERATING STRENGTH LIMITATIONS 
STATIC STRENGTH OF TYPICAL AIRCRAFT METAL 
ULTIMATE 
STRENGTH -Cc 
CYCLIC 
STRESS 
(PSI) 
STRESSES APPLIED ABOVE 
THIS POINT RESULT IN 
OBJECTIONABLE PERMANENT 
DEFORMATION 
Q 
FAILURE 
-I STRAIN 
PERMANENT 
(IN/IN) 
SET II: 
-I I-- 
FATIGUE STRENGTH OF TYPICAL AIRCRAFT METAL 
HIGH CYCLIC STRESS 
VERY FEW CYCLES REQUIRED 
TO CAUSE FAILURE 
MODERATE CYCLIC STRESS 
RELATIVELY LARGE NUMBER OF 
APPLICATIONS NECESSARY TO 
CAUSE FAILURE LOW CYCLIC STRESS 
ALMOST INFINITE CYCLES 
TO CREATE FATIGUE FAILURE 
NUMBER OF APPLICATIONS 
TO CAUSE FATIGUE FAILURE 
Egu,e 5.1. Strength Chomctorirfics 
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