Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which of these does NOT shorten fatigue life?

  • A.A higher tensile mean stress
  • B.An occasional tensile overload
  • C.A corrosive operating environment
  • D.Fretting at a clamped interface

Answer: B

An overload leaves a compressive residual stress at the crack tip that retards subsequent growth, so it lengthens life rather than shortening it. That retardation is why test spectra must represent such cycles carefully.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.