A new technique is described for determining the critical stress intensity factor required for fatigue crack propagation to occur. It enables data to be obtained more rapidly and with fewer testpieces than existing techniques. Initial results obtained for En 3A mild steel are in excellent agreement with published data.
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References
1.
FrostN. E.PookL. P.DentonK. ‘A fracture mechanics analysis of fatigue crack growth data for various materials’, Engng Fract. Mech.19713, 109.
2.
FrostN. E.GreenanA. F. ‘Cyclic stress required to propagate edge cracks in eight materials’, J. mech. Engng Sci.19646 (No. 3), 203–210.
3.
WesselE. T. ‘State of the art of the WOL specimen for Kic fracture toughness testing’, Engng Fract. Mech.19681, 77.
4.
ParisP. CBucciR. J.WesselE. T.ClarkeW. G.MagerT. R. ‘An extensive study on low fatigue crack growth rates in A533 and A508 steels’, Westinghouse Research Laboratories Scientific Paper, 71-IE7-FMPWR-P7, 1971 (December).
5.
KlesnilM.LukásP. ‘Influence of strength and stress history on growth and stabilisation of fatigue cracks’, Engng Fract. Mech.19724, 77.
