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Application of the strain-based FAD to failure assessment of surface cracked components.
- Source :
- International Journal of Structural Integrity; 2015, Vol. 6 Issue 6, p689-703, 15p
- Publication Year :
- 2015
-
Abstract
- Purpose – The purpose of this paper is to validate the strain-based failure assessment diagram (SB-FAD) approach for surface cracks in components subjected to displacement controlled boundary conditions. Design/methodology/approach – Numerical analyses are performed for several crack geometries and materials representative for aerospace applications. The performance of the SB-FAD is judged by comparing numerically calculated J-integrals to respective analytical estimates, using both Options 1 and 2 approximations. Findings – In the most cases, both Options 1 and 2 SB-FAD method results in reasonably conservative J-estimates. Exceptions are for surface cracks in a pressurized vessel made of a material with low-strain hardening, for which Option 2 assessment produces non-conservative results. In contrast, Option 1 assessment is conservative for all geometries considered. In general, Option 1 results in a considerable overestimation of the crack driving force, whereas Option 2 produces rather accurate results in many cases. Originality/value – The results demonstrate both the potential of the SB-FAD method and needs for its further improvements. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17579864
- Volume :
- 6
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- International Journal of Structural Integrity
- Publication Type :
- Academic Journal
- Accession number :
- 111202583
- Full Text :
- https://doi.org/10.1108/IJSI-01-2015-0002