Abstract
Fatigue tests of 7075-T6 aluminum alloy under synchronous pulsating triaxial stresses were performed with three different values of the intermediate principal stress. Thick-walled tubes were subjected to internal pressure plus axial stress such that the state of stress at the inner surface was as follows: in the first case, the intermediate principal stress was a compression equal to the internal pressure; in the second, it was a tension equal to the internal pressure; and in the third, it was a tension equal to the hoop stress at the inner surface. Results showed no effect of the intermediate principal stress.
Issue Section:
Research Papers
Keywords:
aluminum alloy,
combined stress,
failure theory,
fatigue,
principal stress,
tresca,
triaxial,
triaxial fatigue
References
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