Crack path dependence on inhomogeneities of material microstructure
Crack trajectories under different loading conditions and material microstructural features play animportant role when the conditions of crack initiation and crack growth under fatigue loading have to beevaluated. Unavoidable inhomogeneities in the material microstructure tend to affect the crack pr...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2012-03-01
|
| Series: | Fracture and Structural Integrity |
| Online Access: | https://212.237.37.202/index.php/fis/article/view/132 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841564234837655552 |
|---|---|
| author | Roberto Brighenti Andrea Carpinteri Andrea Spagnoli Daniela Scorza |
| author_facet | Roberto Brighenti Andrea Carpinteri Andrea Spagnoli Daniela Scorza |
| author_sort | Roberto Brighenti |
| collection | DOAJ |
| description | Crack trajectories under different loading conditions and material microstructural features play animportant role when the conditions of crack initiation and crack growth under fatigue loading have to beevaluated. Unavoidable inhomogeneities in the material microstructure tend to affect the crack propagationpattern, especially in the short crack regime. Several crack extension criteria have been proposed in the pastdecades to describe crack paths under mixed mode loading conditions. In the present paper, both the Sihcriterion (maximum principal stress criterion) and the R-criterion (minimum extension of the core plastic zone)are adopted in order to predict the crack path at the microscopic scale level by taking into account microstressfluctuations due to material inhomogeneities. Even in the simple case of an elastic behaviour under uniaxialremote stress, microstress field is multiaxial and highly non-uniform. It is herein shown a strong dependence ofthe crack path on the material microstructure in the short crack regime, while the microstructure of the materialdoes not influence the crack trajectory for relatively long cracks. |
| format | Article |
| id | doaj-art-4594687097bc40e69f4b80feae3d2880 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2012-03-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-4594687097bc40e69f4b80feae3d28802025-01-02T23:01:23ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932012-03-01620Crack path dependence on inhomogeneities of material microstructureRoberto BrighentiAndrea CarpinteriAndrea SpagnoliDaniela ScorzaCrack trajectories under different loading conditions and material microstructural features play animportant role when the conditions of crack initiation and crack growth under fatigue loading have to beevaluated. Unavoidable inhomogeneities in the material microstructure tend to affect the crack propagationpattern, especially in the short crack regime. Several crack extension criteria have been proposed in the pastdecades to describe crack paths under mixed mode loading conditions. In the present paper, both the Sihcriterion (maximum principal stress criterion) and the R-criterion (minimum extension of the core plastic zone)are adopted in order to predict the crack path at the microscopic scale level by taking into account microstressfluctuations due to material inhomogeneities. Even in the simple case of an elastic behaviour under uniaxialremote stress, microstress field is multiaxial and highly non-uniform. It is herein shown a strong dependence ofthe crack path on the material microstructure in the short crack regime, while the microstructure of the materialdoes not influence the crack trajectory for relatively long cracks.https://212.237.37.202/index.php/fis/article/view/132 |
| spellingShingle | Roberto Brighenti Andrea Carpinteri Andrea Spagnoli Daniela Scorza Crack path dependence on inhomogeneities of material microstructure Fracture and Structural Integrity |
| title | Crack path dependence on inhomogeneities of material microstructure |
| title_full | Crack path dependence on inhomogeneities of material microstructure |
| title_fullStr | Crack path dependence on inhomogeneities of material microstructure |
| title_full_unstemmed | Crack path dependence on inhomogeneities of material microstructure |
| title_short | Crack path dependence on inhomogeneities of material microstructure |
| title_sort | crack path dependence on inhomogeneities of material microstructure |
| url | https://212.237.37.202/index.php/fis/article/view/132 |
| work_keys_str_mv | AT robertobrighenti crackpathdependenceoninhomogeneitiesofmaterialmicrostructure AT andreacarpinteri crackpathdependenceoninhomogeneitiesofmaterialmicrostructure AT andreaspagnoli crackpathdependenceoninhomogeneitiesofmaterialmicrostructure AT danielascorza crackpathdependenceoninhomogeneitiesofmaterialmicrostructure |