On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens
In this paper, an experimental procedure to evaluate the elastic-plastic J-integral at the tip of a fatigue crack is presented. According to this new approach, the elastic component of the J-integral is derived from Thermoelastic Stress Analysis, while the plastic component of the J-integral is deri...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2502 |
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| author | Giovanni Meneghetti Mauro Ricotta Giuseppe Pitarresi |
| author_facet | Giovanni Meneghetti Mauro Ricotta Giuseppe Pitarresi |
| author_sort | Giovanni Meneghetti |
| collection | DOAJ |
| description | In this paper, an experimental procedure to evaluate the elastic-plastic J-integral at the tip of a fatigue crack is presented. According to this new approach, the elastic component of the J-integral is derived from Thermoelastic Stress Analysis, while the plastic component of the J-integral is derived from the heat energy loss. An analytical link is proposed to apply this new experimental technique. Therefore, the elastic-plastic J-integral range was evaluated starting from infrared temperature maps measured in situ during crack propagation tests of AISI 304L stainless steel specimens. It was found that the range of the infrared thermography-based J-integral correlated well the crack growth data generated in small as well as large scale yielding conditions. Finally, the experimental values of the J-integral were successfully compared with the corresponding numerical values obtained from elastic-plastic finite element analyses. |
| format | Article |
| id | doaj-art-639b042cb0964c3d88cfafbc8ed8b3e6 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-639b042cb0964c3d88cfafbc8ed8b3e62024-12-02T05:42:35ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-06-011349On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimensGiovanni Meneghetti0Mauro RicottaGiuseppe PitarresiUniversity of PaduaIn this paper, an experimental procedure to evaluate the elastic-plastic J-integral at the tip of a fatigue crack is presented. According to this new approach, the elastic component of the J-integral is derived from Thermoelastic Stress Analysis, while the plastic component of the J-integral is derived from the heat energy loss. An analytical link is proposed to apply this new experimental technique. Therefore, the elastic-plastic J-integral range was evaluated starting from infrared temperature maps measured in situ during crack propagation tests of AISI 304L stainless steel specimens. It was found that the range of the infrared thermography-based J-integral correlated well the crack growth data generated in small as well as large scale yielding conditions. Finally, the experimental values of the J-integral were successfully compared with the corresponding numerical values obtained from elastic-plastic finite element analyses.https://www.fracturae.com/index.php/fis/article/view/2502Fracture MechanicsCrack tip plasticityThermoelastic Stress AnalysisEnergy methodsJ-integral |
| spellingShingle | Giovanni Meneghetti Mauro Ricotta Giuseppe Pitarresi On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens Fracture and Structural Integrity Fracture Mechanics Crack tip plasticity Thermoelastic Stress Analysis Energy methods J-integral |
| title | On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens |
| title_full | On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens |
| title_fullStr | On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens |
| title_full_unstemmed | On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens |
| title_short | On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens |
| title_sort | on relation between j integral and heat energy dissipation at the crack tip in stainless steel specimens |
| topic | Fracture Mechanics Crack tip plasticity Thermoelastic Stress Analysis Energy methods J-integral |
| url | https://www.fracturae.com/index.php/fis/article/view/2502 |
| work_keys_str_mv | AT giovannimeneghetti onrelationbetweenjintegralandheatenergydissipationatthecracktipinstainlesssteelspecimens AT mauroricotta onrelationbetweenjintegralandheatenergydissipationatthecracktipinstainlesssteelspecimens AT giuseppepitarresi onrelationbetweenjintegralandheatenergydissipationatthecracktipinstainlesssteelspecimens |