A proposal of methology for the estimation of durability of structures exposed to random loading

The paper describes results of fatigue tests, which have been carried out, on flat specimens with the notch in form of a hole in the middle. Specimens were loaded with three types of random blocks of 20 minutes duration. They mutually differed in a form of the power spectral density (PSD). All the PSDs were of linear form e.g. constant(white noise), linearly increasing and linearly decreasing in the frequency range 0-10Hz. Damage was measured and the method for estimation of live has been proposed