Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regime
This paper proposes a new and improved way to determine the dependency of the parameter that characterizes the process zone size ∫ with fatigue life Nf. Thus, unlike the classical approach, this approach has the advantage of allowing the construction of a ∫ versus Nf relationship, which is independe...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2019-01-01
|
| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2019/49/matecconf_icmff1218_13001.pdf |
| _version_ | 1818956331906760704 |
|---|---|
| author | Borges Rafael Araújo José Silva Cosme Dias Jéssica Ferreira Jorge |
| author_facet | Borges Rafael Araújo José Silva Cosme Dias Jéssica Ferreira Jorge |
| author_sort | Borges Rafael |
| collection | DOAJ |
| description | This paper proposes a new and improved way to determine the dependency of the parameter that characterizes the process zone size ∫ with fatigue life Nf. Thus, unlike the classical approach, this approach has the advantage of allowing the construction of a ∫ versus Nf relationship, which is independent of the type of test used for calibration. In order to define the new relationship, a calibration strategy is presented considering the critical plane models based on the Fatemi-Socie and Smith-Watson-Topper. The accuracy of the method is verified by using data sets taken from the literature. A study on the effect of stress ratio (R) on the behaviour of the ∫ versus Nf relationship is presented and indicates that, although such relationship seems to depend on the R value used in the calibration, the life predictions obtained by these relationships are statistically similar. |
| first_indexed | 2024-12-20T10:52:16Z |
| format | Article |
| id | doaj.art-e187a8ab0adb4a46bea66f051bda510b |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-20T10:52:16Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-e187a8ab0adb4a46bea66f051bda510b2022-12-21T19:43:14ZengEDP SciencesMATEC Web of Conferences2261-236X2019-01-013001300110.1051/matecconf/201930013001matecconf_icmff1218_13001Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regimeBorges RafaelAraújo JoséSilva CosmeDias JéssicaFerreira JorgeThis paper proposes a new and improved way to determine the dependency of the parameter that characterizes the process zone size ∫ with fatigue life Nf. Thus, unlike the classical approach, this approach has the advantage of allowing the construction of a ∫ versus Nf relationship, which is independent of the type of test used for calibration. In order to define the new relationship, a calibration strategy is presented considering the critical plane models based on the Fatemi-Socie and Smith-Watson-Topper. The accuracy of the method is verified by using data sets taken from the literature. A study on the effect of stress ratio (R) on the behaviour of the ∫ versus Nf relationship is presented and indicates that, although such relationship seems to depend on the R value used in the calibration, the life predictions obtained by these relationships are statistically similar.https://www.matec-conferences.org/articles/matecconf/pdf/2019/49/matecconf_icmff1218_13001.pdf |
| spellingShingle | Borges Rafael Araújo José Silva Cosme Dias Jéssica Ferreira Jorge Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regime MATEC Web of Conferences |
| title | Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regime |
| title_full | Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regime |
| title_fullStr | Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regime |
| title_full_unstemmed | Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regime |
| title_short | Generalization of the theory of critical distance to estimate lifetime of notched components in the medium-cycle fatigue regime |
| title_sort | generalization of the theory of critical distance to estimate lifetime of notched components in the medium cycle fatigue regime |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2019/49/matecconf_icmff1218_13001.pdf |
| work_keys_str_mv | AT borgesrafael generalizationofthetheoryofcriticaldistancetoestimatelifetimeofnotchedcomponentsinthemediumcyclefatigueregime AT araujojose generalizationofthetheoryofcriticaldistancetoestimatelifetimeofnotchedcomponentsinthemediumcyclefatigueregime AT silvacosme generalizationofthetheoryofcriticaldistancetoestimatelifetimeofnotchedcomponentsinthemediumcyclefatigueregime AT diasjessica generalizationofthetheoryofcriticaldistancetoestimatelifetimeofnotchedcomponentsinthemediumcyclefatigueregime AT ferreirajorge generalizationofthetheoryofcriticaldistancetoestimatelifetimeofnotchedcomponentsinthemediumcyclefatigueregime |