Evaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mapping
The overload retardation effect on fatigue crack growth rate (FCGR) in titanium alloy Ti-6Al-4V is studied. Synchrotron X-ray diffraction strain mapping of near-crack tip regions of pre-cracked fatigued samples is used to determine the effective stress intensity factors experienced by the crack tip....
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2010
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| _version_ | 1826284544693633024 |
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| author | Belnoue, J Jun, T Hofmann, F Abbey, B Korsunsky, A |
| author_facet | Belnoue, J Jun, T Hofmann, F Abbey, B Korsunsky, A |
| author_sort | Belnoue, J |
| collection | OXFORD |
| description | The overload retardation effect on fatigue crack growth rate (FCGR) in titanium alloy Ti-6Al-4V is studied. Synchrotron X-ray diffraction strain mapping of near-crack tip regions of pre-cracked fatigued samples is used to determine the effective stress intensity factors experienced by the crack tip. The effective stress intensity factor values are computed by finding the best match between the experimental strain maps and linear elastic fracture mechanics (LEFM) predictions. The dependence of the effective stress intensity factor, K, on the applied load is plotted, and an interpretation of the overload retardation effect is proposed. The present approach permits to reconcile the traditional LEFM fatigue crack propagation prediction and the experimental measurement of strain fields. © 2010 Elsevier Ltd. |
| first_indexed | 2024-03-07T01:15:26Z |
| format | Journal article |
| id | oxford-uuid:8e7eb532-f8f9-40cd-bcab-a326d9d480fe |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:15:26Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:8e7eb532-f8f9-40cd-bcab-a326d9d480fe2022-03-26T22:58:05ZEvaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mappingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8e7eb532-f8f9-40cd-bcab-a326d9d480feEnglishSymplectic Elements at Oxford2010Belnoue, JJun, THofmann, FAbbey, BKorsunsky, AThe overload retardation effect on fatigue crack growth rate (FCGR) in titanium alloy Ti-6Al-4V is studied. Synchrotron X-ray diffraction strain mapping of near-crack tip regions of pre-cracked fatigued samples is used to determine the effective stress intensity factors experienced by the crack tip. The effective stress intensity factor values are computed by finding the best match between the experimental strain maps and linear elastic fracture mechanics (LEFM) predictions. The dependence of the effective stress intensity factor, K, on the applied load is plotted, and an interpretation of the overload retardation effect is proposed. The present approach permits to reconcile the traditional LEFM fatigue crack propagation prediction and the experimental measurement of strain fields. © 2010 Elsevier Ltd. |
| spellingShingle | Belnoue, J Jun, T Hofmann, F Abbey, B Korsunsky, A Evaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mapping |
| title | Evaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mapping |
| title_full | Evaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mapping |
| title_fullStr | Evaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mapping |
| title_full_unstemmed | Evaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mapping |
| title_short | Evaluation of the overload effect on fatigue crack growth with the help of synchrotron XRD strain mapping |
| title_sort | evaluation of the overload effect on fatigue crack growth with the help of synchrotron xrd strain mapping |
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