Stress intensity factors and crack propagation in a single crystal nickel-based superalloy
Stress intensity factors and crack propagation in a single crystal nickel-based superalloy
Samenvatting
A three-dimensional finite element method was used to calculate the stress intensity factors for corner cracked specimens of a single crystal nickel-based superalloy. The anisotropic material properties and inclinations of the cracks were shown to have significant effects on the stress intensities. Then the two-dimensional resolved shear stress approach for predicting the crack planes and crack growth directions in single crystals was extended to the three-dimensional case. Using this approach, the fatigue crack growth behaviour in single crystal corner cracked specimens could be explained.
Organisatie | Ministerie van Defensie - NLDA |
Afdeling | Faculteit Militaire Wetenschappen |
Lectoraat | Militair Technische Wetenschappen |
Gepubliceerd in | Engineering Fracture Mechanics Elsevier Science, Vol. 73, Pagina's: 1679-1692 |
Jaar | 2006 |
Type | Artikel |
DOI | 10.1016/j.engfracmech.2006.02.002 |
Taal | Engels |