On the Relationship Between Low Cycle Fatigue and Crack Growth Rate Properties in Welded Steel Components

Author:  Bjorn Skallerud
Source:  Fatigue Fract. Engng Mat Struct. Vol 15 No 1
Doc ID:  1991076
Year of Publication:  1991
Abstract:  
Previous investigations have shown that for plain materials, the crack growth rate constants applied in an elastic plastic crack growth model may be obtained indirectly from the constants describing the low cycle fatigue capacity of the material. In the present study a simple EPFM crack growth model, based on buld strain amplitude as the governing parameter, is assumed. The crack growth constants dirived from the linear regression constants describing the LCF capaciaty of manually butwelded components are determined, and the validity of the resulting EPFM crack growth model is checked against measured LCF crack growth data.