3rd International Conference on Material and Component Performance under Variable Amplitude Loading, VAL2015 Fatigue life from sine-on-random excitation s

This presentation concentrates on calculating the high cycle fatigue life from sine-on-random excitations. A spectral domain approach offers advantages over the time domain approach when computation times are prohibitive. The proposed approach is to derive the statistical rainflow cycle histogram from a sine- on -random spectrum of stress data and then to use the appropriate material fatigue curve to obtain the estimated life. A case study illustrates the application of the method on a component attached to a helicopter. Comparisons with traditional time-domain approaches are presented and show excellent agreement. © 2015 The Authors. Published by Elsevier Ltd. Peer -review under responsibility of th e Czech Society for Mechanics.