Crack growth rate prediction based on damage accumulation functions for creep-fatigue interaction
The present study is concerned with formulation of a model for the creepfatigue crack growth rate prediction on the base of fracture damage zone concepts. It is supposed that crack growth rate can be determined by integration of damage accumulation rate equations into the fracture process zone for l...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2020-04-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2761/2977 |
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| author | A.V. Tumanov V.N. Shlyannikov A.P. Zakharov |
| author_facet | A.V. Tumanov V.N. Shlyannikov A.P. Zakharov |
| author_sort | A.V. Tumanov |
| collection | DOAJ |
| description | The present study is concerned with formulation of a model for the creepfatigue crack growth rate prediction on the base of fracture damage zone concepts. It is supposed that crack growth rate can be determined by integration of damage accumulation rate equations into the fracture process zone for low-cycle fatigue and creep loading independently. In the case of low-cycle fatigue loading the damage accumulation function proposed by Ye and Wang was used as well as a classical Kachanov-Rabotnov power law was employment for the creep damage accumulation characterization. Fracture process zone size is calculated on the base of the nonlinear stress intensity factors concept proposed by Shlyannikov. The background for the proposed general model of crack growth rate under creep and fatigue interaction is given in order to comparison with the experimental data. Experimental study of crack growth rate under creep and fatigue interaction is performed for compact tension specimen made from 20CrMoV5. Crack growth rate carried out at the elevated temperature of 550C according to ASTM E2760 standard. The predictions of the crack growth rate were compared with the experimental data for the 20CrMoV5 steel obtained at an elevated temperature, and the agreement was found to be satisfactory |
| format | Article |
| id | doaj-art-d1269d1f3aaf481cb2b3283b3cd9cfbb |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2020-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-d1269d1f3aaf481cb2b3283b3cd9cfbb2025-01-03T00:27:07ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932020-04-01145229930910.3221/IGF-ESIS.52.2310.3221/IGF-ESIS.52.23Crack growth rate prediction based on damage accumulation functions for creep-fatigue interactionA.V. TumanovV.N. ShlyannikovA.P. ZakharovThe present study is concerned with formulation of a model for the creepfatigue crack growth rate prediction on the base of fracture damage zone concepts. It is supposed that crack growth rate can be determined by integration of damage accumulation rate equations into the fracture process zone for low-cycle fatigue and creep loading independently. In the case of low-cycle fatigue loading the damage accumulation function proposed by Ye and Wang was used as well as a classical Kachanov-Rabotnov power law was employment for the creep damage accumulation characterization. Fracture process zone size is calculated on the base of the nonlinear stress intensity factors concept proposed by Shlyannikov. The background for the proposed general model of crack growth rate under creep and fatigue interaction is given in order to comparison with the experimental data. Experimental study of crack growth rate under creep and fatigue interaction is performed for compact tension specimen made from 20CrMoV5. Crack growth rate carried out at the elevated temperature of 550C according to ASTM E2760 standard. The predictions of the crack growth rate were compared with the experimental data for the 20CrMoV5 steel obtained at an elevated temperature, and the agreement was found to be satisfactoryhttps://www.fracturae.com/index.php/fis/article/view/2761/2977creep-fatigue interactioncrack growth rate predictionnonlinear stress intensity factors |
| spellingShingle | A.V. Tumanov V.N. Shlyannikov A.P. Zakharov Crack growth rate prediction based on damage accumulation functions for creep-fatigue interaction Fracture and Structural Integrity creep-fatigue interaction crack growth rate prediction nonlinear stress intensity factors |
| title | Crack growth rate prediction based on damage accumulation functions for creep-fatigue interaction |
| title_full | Crack growth rate prediction based on damage accumulation functions for creep-fatigue interaction |
| title_fullStr | Crack growth rate prediction based on damage accumulation functions for creep-fatigue interaction |
| title_full_unstemmed | Crack growth rate prediction based on damage accumulation functions for creep-fatigue interaction |
| title_short | Crack growth rate prediction based on damage accumulation functions for creep-fatigue interaction |
| title_sort | crack growth rate prediction based on damage accumulation functions for creep fatigue interaction |
| topic | creep-fatigue interaction crack growth rate prediction nonlinear stress intensity factors |
| url | https://www.fracturae.com/index.php/fis/article/view/2761/2977 |
| work_keys_str_mv | AT avtumanov crackgrowthratepredictionbasedondamageaccumulationfunctionsforcreepfatigueinteraction AT vnshlyannikov crackgrowthratepredictionbasedondamageaccumulationfunctionsforcreepfatigueinteraction AT apzakharov crackgrowthratepredictionbasedondamageaccumulationfunctionsforcreepfatigueinteraction |