Damage evaluation under complex fatigue loading conditions
Fatigue damage and life assessment of multiaxial loadings is still an issue yet to resolve. Many methods have been proposed with promising agreements with the experimental results. However, the performance of such methods is, more than often, purely based on fatigue tests with simple loading conditi...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-04-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2202/2454 |
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| author | L. Reis J. Caxias H. Soares P. R. Costa V. Anes M. Freitas |
| author_facet | L. Reis J. Caxias H. Soares P. R. Costa V. Anes M. Freitas |
| author_sort | L. Reis |
| collection | DOAJ |
| description | Fatigue damage and life assessment of multiaxial loadings is still an issue yet to resolve. Many methods have been proposed with promising agreements with the experimental results. However, the performance of such methods is, more than often, purely based on fatigue tests with simple loading conditions. In this work the stress scale factor (SSF) criterion and the virtual cycle counting (vcc) method are used to estimate fatigue life and damage accumulation with two damage accumulation rules. Fatigue tests were carried out with three different variable amplitude random loadings, applied to several specimens made from a 42CrMo4 high-strength steel. Fatigue crack plane measurements were compared with predictions from several critical plane models. The applied methods provided very acceptable results making the SSF package (SSF equivalent stress and virtual cycle counting method) a good method to estimate fatigue life and assessment of the damage accumulation in random fatigue loadings. |
| format | Article |
| id | doaj-art-ea476f3eae1c4d3483a1948b5519e411 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-ea476f3eae1c4d3483a1948b5519e4112025-02-02T22:34:01ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-04-01134830433110.3221/IGF-ESIS.48.3110.3221/IGF-ESIS.48.31Damage evaluation under complex fatigue loading conditionsL. ReisJ. CaxiasH. SoaresP. R. CostaV. AnesM. FreitasFatigue damage and life assessment of multiaxial loadings is still an issue yet to resolve. Many methods have been proposed with promising agreements with the experimental results. However, the performance of such methods is, more than often, purely based on fatigue tests with simple loading conditions. In this work the stress scale factor (SSF) criterion and the virtual cycle counting (vcc) method are used to estimate fatigue life and damage accumulation with two damage accumulation rules. Fatigue tests were carried out with three different variable amplitude random loadings, applied to several specimens made from a 42CrMo4 high-strength steel. Fatigue crack plane measurements were compared with predictions from several critical plane models. The applied methods provided very acceptable results making the SSF package (SSF equivalent stress and virtual cycle counting method) a good method to estimate fatigue life and assessment of the damage accumulation in random fatigue loadings.https://www.fracturae.com/index.php/fis/article/view/2202/2454Multiaxial fatigueFatigue lifeDamage accumulationSSFCritical plane models |
| spellingShingle | L. Reis J. Caxias H. Soares P. R. Costa V. Anes M. Freitas Damage evaluation under complex fatigue loading conditions Fracture and Structural Integrity Multiaxial fatigue Fatigue life Damage accumulation SSF Critical plane models |
| title | Damage evaluation under complex fatigue loading conditions |
| title_full | Damage evaluation under complex fatigue loading conditions |
| title_fullStr | Damage evaluation under complex fatigue loading conditions |
| title_full_unstemmed | Damage evaluation under complex fatigue loading conditions |
| title_short | Damage evaluation under complex fatigue loading conditions |
| title_sort | damage evaluation under complex fatigue loading conditions |
| topic | Multiaxial fatigue Fatigue life Damage accumulation SSF Critical plane models |
| url | https://www.fracturae.com/index.php/fis/article/view/2202/2454 |
| work_keys_str_mv | AT lreis damageevaluationundercomplexfatigueloadingconditions AT jcaxias damageevaluationundercomplexfatigueloadingconditions AT hsoares damageevaluationundercomplexfatigueloadingconditions AT prcosta damageevaluationundercomplexfatigueloadingconditions AT vanes damageevaluationundercomplexfatigueloadingconditions AT mfreitas damageevaluationundercomplexfatigueloadingconditions |