Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data
Modified version of the crack compliance method is used for determination of stress intensity factor (SIF) related to narrow notches emanating from cold-expanded holes. These notches are inserted at different stages of low-cycle fatigue under constant external load. It is shown how residual SIF valu...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2020-12-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2957 |
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| author | Andrey Chernov Sviatoslav Eleonsky Vladimir Pisarev |
| author_facet | Andrey Chernov Sviatoslav Eleonsky Vladimir Pisarev |
| author_sort | Andrey Chernov |
| collection | DOAJ |
| description | Modified version of the crack compliance method is used for determination of stress intensity factor (SIF) related to narrow notches emanating from cold-expanded holes. These notches are inserted at different stages of low-cycle fatigue under constant external load. It is shown how residual SIF values, generated by residual stress field influence, can be separated from total experimental SIF values. Residual SIF values, obtained at different stage of low-cycle fatigue with the same stress range Δσ = 350 MPa but different stress R = –0.4 and R = –1.0, provide quantitative description of residual stress evolution near cold-expanded hole. It shown that maximal residual stress relaxation of order 20 per cent occurs at 95 lifetime per cent for both loading programs. |
| format | Article |
| id | doaj-art-a92363d4521d48829921c73d217682f1 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-a92363d4521d48829921c73d217682f12025-01-02T23:00:59ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932020-12-01155510.3221/IGF-ESIS.55.13Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance dataAndrey Chernov0Sviatoslav Eleonsky1Vladimir Pisarev2Central Aero-Hydrodynamics Institute named after Prof. N.E. Zhukovsky (TsAGI). 1 Zhukovsky Street, Zhukovsky 140180 Moscow Region, RussiaCentral Aero-Hydrodynamics Institute named after Prof. N.E. Zhukovsky (TsAGI). 1 Zhukovsky Street, Zhukovsky 140180 Moscow Region, RussiaCentral Aero-Hydrodynamics Institute named after Prof. N.E. Zhukovsky (TsAGI). 1 Zhukovsky Street, Zhukovsky 140180 Moscow Region, RussiaModified version of the crack compliance method is used for determination of stress intensity factor (SIF) related to narrow notches emanating from cold-expanded holes. These notches are inserted at different stages of low-cycle fatigue under constant external load. It is shown how residual SIF values, generated by residual stress field influence, can be separated from total experimental SIF values. Residual SIF values, obtained at different stage of low-cycle fatigue with the same stress range Δσ = 350 MPa but different stress R = –0.4 and R = –1.0, provide quantitative description of residual stress evolution near cold-expanded hole. It shown that maximal residual stress relaxation of order 20 per cent occurs at 95 lifetime per cent for both loading programs.https://www.fracturae.com/index.php/fis/article/view/2957Metal-composite jointsCold hole expansionResidual stress intensity factorResidual stress |
| spellingShingle | Andrey Chernov Sviatoslav Eleonsky Vladimir Pisarev Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data Fracture and Structural Integrity Metal-composite joints Cold hole expansion Residual stress intensity factor Residual stress |
| title | Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data |
| title_full | Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data |
| title_fullStr | Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data |
| title_full_unstemmed | Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data |
| title_short | Influence of stress ratio on residual stress evolution near cold-expanded hole due to low-cycle fatigue by crack compliance data |
| title_sort | influence of stress ratio on residual stress evolution near cold expanded hole due to low cycle fatigue by crack compliance data |
| topic | Metal-composite joints Cold hole expansion Residual stress intensity factor Residual stress |
| url | https://www.fracturae.com/index.php/fis/article/view/2957 |
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