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Publications
Yue, JX., Damg, ZF. and Guedes Soares, C. (2017), “Prediction of Fatigue Crack Propagation in Bulb Stiffeners by Experimental and Numerical Methods”, International Journal of Fatigue, 2017, Vol. 99, pp. 101-110
The fatigue crack propagation in the bulb-flat, which is widely used in ship and bridge engineering, is one of the basic parameters for structures’ fatigue life prediction. The shape of a three dimensional surface crack in full-scale bulb-flat fatigue test was measured and estimated by Nominalization Crack Opening Displacement (NCOD) method. Then the obtained crack shape was used to predict the fatigue crack propagation in the bulb-flat based on the two dimensional Paris’ law and the Liner Finite Element Analysis (LFEA) method. Moreover, the predicted fatigue crack propagation has been verified by the full-scale fatigue test on a typical ship structure detail. This method proposed in this paper may provide reference to the definition of failure criterion of bulb-flat.
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