Effects of Cyclic Waveforms with Superimposed High Frequency Flutter on the Corrosion Fatigue Behaviour of a Submarine Hull Steel
2006
Khan, M. Z. | Burch, I. A.
In the past, several investigators have reported changes in the stress corrosion fatigue behavior when small amplitude high frequency flutter loading was superimposed on a static load or the hold portion of cycle waveform. In a more recent study it was reported that in the presence of seawater the fatigue life (basic trapezoidal cycles) decreased when the superimposed flutter frequency increased from 1 Hz to 20 Hz. Above 20 Hz, and up to 30 Hz at least, no further frequency dependence was observed. The significance of the past findings are of considerable practical importance especially dealing with a new steel (Australian designation BIS 812 EMA) for a submarine pressure hull application.
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