Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading
For various configurations examined in a series of fatigue experiments on thin-walled tubes under tension and torsion, the experimental results – crack path, crack growth life, near crack tip deformations, and crack closure – are measured and compared to the results of some numerical simulations....
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2015-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero33/numero_33_art_6.pdf |
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| _version_ | 1841564567989125120 |
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| author | Y. Hos M. Vormwald J.L.F. Freire |
| author_facet | Y. Hos M. Vormwald J.L.F. Freire |
| author_sort | Y. Hos |
| collection | DOAJ |
| description | For various configurations examined in a series of fatigue experiments on thin-walled tubes under
tension and torsion, the experimental results – crack path, crack growth life, near crack tip deformations, and
crack closure – are measured and compared to the results of some numerical simulations. Partially automated
optical inspection and the digital image correlation technique were used in the experimental investigation. In the
finite element analyses, an actual geometry of a cracked structure has been modeled. The mechanical material
behavior has been assumed as linear elastic in a first approach for calculating stress intensity factors. The nonlinear
nature of the cyclic deformation has been taken into account by applying a cyclic plasticity model, and
plasticity-induced crack closure is captured by a contact formulation. |
| format | Article |
| id | doaj-art-a8f6b396220246988391db3d2f0bad43 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2015-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-a8f6b396220246988391db3d2f0bad432025-01-02T22:37:22ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932015-07-01933425510.3221/IGF-ESIS.33.06Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loadingY. Hos0M. Vormwald1J.L.F. Freire2Technische Universität Darmstadt,GermanyTechnische Universität Darmstadt,GermanyPontifícia Universidade Católica do Rio de Janeiro,BrasilFor various configurations examined in a series of fatigue experiments on thin-walled tubes under tension and torsion, the experimental results – crack path, crack growth life, near crack tip deformations, and crack closure – are measured and compared to the results of some numerical simulations. Partially automated optical inspection and the digital image correlation technique were used in the experimental investigation. In the finite element analyses, an actual geometry of a cracked structure has been modeled. The mechanical material behavior has been assumed as linear elastic in a first approach for calculating stress intensity factors. The nonlinear nature of the cyclic deformation has been taken into account by applying a cyclic plasticity model, and plasticity-induced crack closure is captured by a contact formulation.http://www.gruppofrattura.it/pdf/rivista/numero33/numero_33_art_6.pdfMultiaxial fatigueMixed modeFatigue crack growthDigital image correlation.Digital image correlation |
| spellingShingle | Y. Hos M. Vormwald J.L.F. Freire Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading Fracture and Structural Integrity Multiaxial fatigue Mixed mode Fatigue crack growth Digital image correlation. Digital image correlation |
| title | Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading |
| title_full | Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading |
| title_fullStr | Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading |
| title_full_unstemmed | Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading |
| title_short | Measurement and simulation of strain fields around crack tips under mixed-mode fatigue loading |
| title_sort | measurement and simulation of strain fields around crack tips under mixed mode fatigue loading |
| topic | Multiaxial fatigue Mixed mode Fatigue crack growth Digital image correlation. Digital image correlation |
| url | http://www.gruppofrattura.it/pdf/rivista/numero33/numero_33_art_6.pdf |
| work_keys_str_mv | AT yhos measurementandsimulationofstrainfieldsaroundcracktipsundermixedmodefatigueloading AT mvormwald measurementandsimulationofstrainfieldsaroundcracktipsundermixedmodefatigueloading AT jlffreire measurementandsimulationofstrainfieldsaroundcracktipsundermixedmodefatigueloading |