Experimental and analytical study of cracks under biaxial fatigue
Most mechanical components experience multi-axial cyclic loading conditions during service. Experimental analysis of fatigue cracks under such conditions is not easy and most works tend to focus more on the simpler but less realistic case of uni-axial loading. Consequently, there are many uncertaint...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2016-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://212.237.37.202/index.php/fis/article/view/1727 |
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| author | M. Mokhtarishirazbad P. Lopez-Crespo B. Moreno D. Camas A. Lopez-Moreno M. Zanganeh |
| author_facet | M. Mokhtarishirazbad P. Lopez-Crespo B. Moreno D. Camas A. Lopez-Moreno M. Zanganeh |
| author_sort | M. Mokhtarishirazbad |
| collection | DOAJ |
| description | Most mechanical components experience multi-axial cyclic loading conditions during service. Experimental analysis of fatigue cracks under such conditions is not easy and most works tend to focus more on the simpler but less realistic case of uni-axial loading. Consequently, there are many uncertainties related to the load sequence effect that are now well known and are not normally incorporated into the growth models. The current work presents a new methodology for evaluating overload effect in biaxial fatigue cracks. The methodology includes evaluation of mixed-mode (KI and KII) stress intensity factor and the Crack Opening Displacement for samples with and without overload cycle under biaxial loading. The methodology is tested under a range of crack lengths. All crack-tip information is obtained with a hybrid methodology that combines experimental full-field digital image correlation data and Williams' elastic model describing the crack-tip field. |
| format | Article |
| id | doaj-art-1ad4f6c0124f41f5ba3db57f7a087db8 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2016-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-1ad4f6c0124f41f5ba3db57f7a087db82025-01-02T22:36:53ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932016-06-011037Experimental and analytical study of cracks under biaxial fatigueM. MokhtarishirazbadP. Lopez-CrespoB. MorenoD. CamasA. Lopez-MorenoM. ZanganehMost mechanical components experience multi-axial cyclic loading conditions during service. Experimental analysis of fatigue cracks under such conditions is not easy and most works tend to focus more on the simpler but less realistic case of uni-axial loading. Consequently, there are many uncertainties related to the load sequence effect that are now well known and are not normally incorporated into the growth models. The current work presents a new methodology for evaluating overload effect in biaxial fatigue cracks. The methodology includes evaluation of mixed-mode (KI and KII) stress intensity factor and the Crack Opening Displacement for samples with and without overload cycle under biaxial loading. The methodology is tested under a range of crack lengths. All crack-tip information is obtained with a hybrid methodology that combines experimental full-field digital image correlation data and Williams' elastic model describing the crack-tip field.https://212.237.37.202/index.php/fis/article/view/1727Stress intensity factorBiaxial fatigueMixed-modeCrack opening displacement |
| spellingShingle | M. Mokhtarishirazbad P. Lopez-Crespo B. Moreno D. Camas A. Lopez-Moreno M. Zanganeh Experimental and analytical study of cracks under biaxial fatigue Fracture and Structural Integrity Stress intensity factor Biaxial fatigue Mixed-mode Crack opening displacement |
| title | Experimental and analytical study of cracks under biaxial fatigue |
| title_full | Experimental and analytical study of cracks under biaxial fatigue |
| title_fullStr | Experimental and analytical study of cracks under biaxial fatigue |
| title_full_unstemmed | Experimental and analytical study of cracks under biaxial fatigue |
| title_short | Experimental and analytical study of cracks under biaxial fatigue |
| title_sort | experimental and analytical study of cracks under biaxial fatigue |
| topic | Stress intensity factor Biaxial fatigue Mixed-mode Crack opening displacement |
| url | https://212.237.37.202/index.php/fis/article/view/1727 |
| work_keys_str_mv | AT mmokhtarishirazbad experimentalandanalyticalstudyofcracksunderbiaxialfatigue AT plopezcrespo experimentalandanalyticalstudyofcracksunderbiaxialfatigue AT bmoreno experimentalandanalyticalstudyofcracksunderbiaxialfatigue AT dcamas experimentalandanalyticalstudyofcracksunderbiaxialfatigue AT alopezmoreno experimentalandanalyticalstudyofcracksunderbiaxialfatigue AT mzanganeh experimentalandanalyticalstudyofcracksunderbiaxialfatigue |