Stationary and nonstationary processes in random vibrations of structures; ergodicity and measurements of random loads, FFT, autocorrelation and power spectral density functions; response functions; vibrations of single- and multi-degrees of freedom mechanical and structural systems subjected to random loads; response threshold crossing rates, peak distributions, and first passage problem; application to cumulative damage potential and structural reliability assessments. Pre: 5304 or 4074, 4614 or STAT 4706. (3H,3C).