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.

Info:

Periodical:

Key Engineering Materials (Volumes 417-418)

Edited by:

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

Pages:

201-204

Citation:

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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Price:

$41.00

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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).