Effect of Plate Thickness and Load History on Fatigue Crack Growth


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A new theoretical approach is presented for investigating fatigue crack growth in plates of finite thickness. The developed approach utilizes a modified strip-yield analysis and the concept of plasticity-induced crack closure. A number of typical fatigue crack growth phenomena are investigated including the thickness effect on constant amplitude fatigue crack growth, retardation due to a tensile overload cycle, and short crack growth from sharp notches. Theoretical predictions are compared with experimental data and are found to be in very good correlation.



Key Engineering Materials (Volumes 417-418)

Edited by:

M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee




J. Codrington et al., "Effect of Plate Thickness and Load History on Fatigue Crack Growth", Key Engineering Materials, Vols. 417-418, pp. 201-204, 2010

Online since:

October 2009




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[8] ∆σ = 55 MPa = 70 MPa Long crack scatter ∆K (MPa√m) da/dN (mm/cycle) 10-5 8 a (mm) 10-3 da/dN (mm/cycle) 6 4 2 0 Plane stress Plane strain Prediction.

DOI: https://doi.org/10.3403/30155901

[8] ∆σ = 55 MPa Long crack scatter 10-4 10-6 10-5 a) b).