5. Mechanical Behavior
Fatigue — Quiz
Test your understanding of fatigue with 5 practice questions.
Practice Questions
Question 1
Which environmental factor most significantly accelerates fatigue crack growth in metallic components?
Question 2
What is the primary purpose of rainflow cycle counting in fatigue analysis?
Question 3
On a log–log plot of fatigue crack growth rate $da/dN$ versus stress intensity factor range $\Delta K$, which region corresponds to near-threshold crack growth behavior?
Question 4
Which fatigue analysis approach is most appropriate for low-cycle fatigue where significant plastic strain occurs each cycle?
Question 5
Using Paris’ law $\frac{da}{dN}=C(\Delta K)^m$ with $C=1\times10^{-12}\,\mathrm{m/(cycle\,(MPa\sqrt m)^m)}$, $m=3.0$, and $\Delta K=10\,\mathrm{MPa\sqrt m}$, what is the crack growth rate $da/dN$ in m/cycle?