A method and system for accelerated fatigue damage testing of an object excited via an actor, wherein a drive signal is generated and transmitted to the actor, where the acceleration of the object or a mounting base of the actor is measured and supplied to a control system, where a Power Spectral Density (PSD) and a Fatigue Damage Spectrum FDS within the control system are calculated from the measured acceleration, whereby the calculated PSD is compared with a target PSD, whereby the calculated Fatigue Damage Spectrum FDS is compared with a target FDS, whereby a new drive frequency spectrum is calculated based on the comparisons and, one or multiple time domain blocks for the drive signal for a next cycle are generated from the new drive frequency spectrum and transmitted to the actor such that accelerated vibration testing without affecting the failure mode is achieved which provides realistic results.
展开▼
