Figures 5(a) and (b): Two plots of the same set of data as a function of frequency showing that the rate of crack growth is predominantly a function of time at these stress levels.

DOI link for Figures 5(a) and (b): Two plots of the same set of data as a function of frequency showing that the rate of crack growth is predominantly a function of time at these stress levels.

Figures 5(a) and (b): Two plots of the same set of data as a function of frequency showing that the rate of crack growth is predominantly a function of time at these stress levels.