This is where offers a faster, more accurate, and computationally elegant alternative. By shifting the analysis from the time domain to the frequency domain, engineers can evaluate random vibration fatigue in a fraction of the time. The Core Limitation of Time-Domain Fatigue Analysis
The core idea is elegantly simple: instead of analyzing long, complex time-history signals of stress or strain, spectral methods use the function. The PSD describes how the power of a signal is distributed across different frequencies. This shift in perspective unlocks significant advantages: vibration fatigue by spectral methods pdf better