On DIC measurements of Keff to verify if it is the FCG driving force
Redundant data obtained under quasi-constant { delta K, Kmax} loading conditions is used to verify if the effective stress intensity factor (SIF) range delta Keff delta Kmax delta Kop is indeed the fatigue crack driving force. The crack opening SIF Kop is measured along the entire crack path on DC(T...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2017-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_31.pdf |
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| author | Jaime Tupiassú Pinho de Castro Giancarlo Luis Gomez Gonzáles Marco Antonio Meggiolaro José Luiz de França Freire |
| author_facet | Jaime Tupiassú Pinho de Castro Giancarlo Luis Gomez Gonzáles Marco Antonio Meggiolaro José Luiz de França Freire |
| author_sort | Jaime Tupiassú Pinho de Castro |
| collection | DOAJ |
| description | Redundant data obtained under quasi-constant { delta K, Kmax} loading conditions is used to verify if the effective stress intensity factor (SIF) range delta Keff delta Kmax delta Kop is indeed the fatigue crack driving force. The crack opening SIF Kop is measured along the entire crack path on DC(T) low carbon steel specimens by a series of strain gages bonded along the crack paths, by a strain gage bonded on their back faces, and by a digital image correlation technique. All such measurements showed a significant Kop decrease as the crack sizes increased, while the fatigue crack growth rates remained essentially constant both in the thin and thick specimens, a behavior that cannot be explained by delta Keff arguments. |
| format | Article |
| id | doaj-art-9ff5a31d21e241fc91e1567d807c932a |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2017-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-9ff5a31d21e241fc91e1567d807c932a2025-01-02T23:01:51ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932017-07-01114122723510.3221/IGF-ESIS.41.31On DIC measurements of Keff to verify if it is the FCG driving forceJaime Tupiassú Pinho de Castro0Giancarlo Luis Gomez Gonzáles1 Marco Antonio Meggiolaro2 José Luiz de França Freire 3Pontifical Catholic University of Rio de Janeiro, BrazilPontifical Catholic University of Rio de Janeiro, BrazilPontifical Catholic University of Rio de Janeiro, BrazilPontifical Catholic University of Rio de Janeiro, BrazilRedundant data obtained under quasi-constant { delta K, Kmax} loading conditions is used to verify if the effective stress intensity factor (SIF) range delta Keff delta Kmax delta Kop is indeed the fatigue crack driving force. The crack opening SIF Kop is measured along the entire crack path on DC(T) low carbon steel specimens by a series of strain gages bonded along the crack paths, by a strain gage bonded on their back faces, and by a digital image correlation technique. All such measurements showed a significant Kop decrease as the crack sizes increased, while the fatigue crack growth rates remained essentially constant both in the thin and thick specimens, a behavior that cannot be explained by delta Keff arguments.http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_31.pdfFatigue crack driving forcesopening load measurementsdelta Keff limitations. |
| spellingShingle | Jaime Tupiassú Pinho de Castro Giancarlo Luis Gomez Gonzáles Marco Antonio Meggiolaro José Luiz de França Freire On DIC measurements of Keff to verify if it is the FCG driving force Fracture and Structural Integrity Fatigue crack driving forces opening load measurements delta Keff limitations. |
| title | On DIC measurements of Keff to verify if it is the FCG driving force |
| title_full | On DIC measurements of Keff to verify if it is the FCG driving force |
| title_fullStr | On DIC measurements of Keff to verify if it is the FCG driving force |
| title_full_unstemmed | On DIC measurements of Keff to verify if it is the FCG driving force |
| title_short | On DIC measurements of Keff to verify if it is the FCG driving force |
| title_sort | on dic measurements of keff to verify if it is the fcg driving force |
| topic | Fatigue crack driving forces opening load measurements delta Keff limitations. |
| url | http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_31.pdf |
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