On a kinked crack model to describe the influence of material microstructure on fatigue crack growth
Threshold condition and rate of fatigue crack growth in both short and long crack regime appear to be significantly affected by the degree of crack deflection. In the present paper, a theoretical model of a periodically-kinked crack is presented to describe the influence of the degree of crack defle...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2013-04-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/214 |
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| author | Andrea Spagnoli Andrea Carpinteri Sabrina Vantadori |
| author_facet | Andrea Spagnoli Andrea Carpinteri Sabrina Vantadori |
| author_sort | Andrea Spagnoli |
| collection | DOAJ |
| description | Threshold condition and rate of fatigue crack growth in both short and long crack regime appear to be significantly affected by the degree of crack deflection. In the present paper, a theoretical model of a periodically-kinked crack is presented to describe the influence of the degree of crack deflection on the fatigue
behavior. The kinking of the crack is due to a periodic self-balanced microstress field having a length scale, d.
By correlating the parameter d with a characteristic material length (e.g. average grain size in metals, maximum aggregate dimension in concrete), the possibility of using the present model to describe some experimental findings related to crack size effects in fatigue of materials is explored. Well-known experimental results concerning two different situations (fatigue threshold and fatigue crack growth in the Paris regime) are briefly analysed. |
| format | Article |
| id | doaj-art-7df48bb927dd4b889f80f4f137083920 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2013-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-7df48bb927dd4b889f80f4f1370839202025-01-03T00:40:27ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932013-04-01725On a kinked crack model to describe the influence of material microstructure on fatigue crack growthAndrea SpagnoliAndrea CarpinteriSabrina VantadoriThreshold condition and rate of fatigue crack growth in both short and long crack regime appear to be significantly affected by the degree of crack deflection. In the present paper, a theoretical model of a periodically-kinked crack is presented to describe the influence of the degree of crack deflection on the fatigue behavior. The kinking of the crack is due to a periodic self-balanced microstress field having a length scale, d. By correlating the parameter d with a characteristic material length (e.g. average grain size in metals, maximum aggregate dimension in concrete), the possibility of using the present model to describe some experimental findings related to crack size effects in fatigue of materials is explored. Well-known experimental results concerning two different situations (fatigue threshold and fatigue crack growth in the Paris regime) are briefly analysed.https://www.fracturae.com/index.php/fis/article/view/214Kinked crack |
| spellingShingle | Andrea Spagnoli Andrea Carpinteri Sabrina Vantadori On a kinked crack model to describe the influence of material microstructure on fatigue crack growth Fracture and Structural Integrity Kinked crack |
| title | On a kinked crack model to describe the influence of material microstructure on fatigue crack growth |
| title_full | On a kinked crack model to describe the influence of material microstructure on fatigue crack growth |
| title_fullStr | On a kinked crack model to describe the influence of material microstructure on fatigue crack growth |
| title_full_unstemmed | On a kinked crack model to describe the influence of material microstructure on fatigue crack growth |
| title_short | On a kinked crack model to describe the influence of material microstructure on fatigue crack growth |
| title_sort | on a kinked crack model to describe the influence of material microstructure on fatigue crack growth |
| topic | Kinked crack |
| url | https://www.fracturae.com/index.php/fis/article/view/214 |
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