Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account
Engine components are usually subject to complex loading patterns such as mixed-mode Low Cycle Fatigue Loading due to maneuvering. In practice, this LCF Loading has to be superimposed by High Cyclic Fatigue Loading caused by vibrations. The changes brought along by HCF are twofold: first, the vib...
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Gruppo Italiano Frattura
2016-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_13.pdf |
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| _version_ | 1832568690686558208 |
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| author | Guido Dhondt |
| author_facet | Guido Dhondt |
| author_sort | Guido Dhondt |
| collection | DOAJ |
| description | Engine components are usually subject to complex loading patterns such as mixed-mode Low
Cycle Fatigue Loading due to maneuvering. In practice, this LCF Loading has to be superimposed by High
Cyclic Fatigue Loading caused by vibrations. The changes brought along by HCF are twofold: first, the
vibrational cycles which are superposed on the LCF mission increase the maximum loading of the mission and
may alter the principal stress planes. Secondly, the HCF cycles themselves have to be evaluated on their own,
assuring that no crack propagation occurs. Indeed, the vibrational frequency is usually so high that propagation
leads to immediate failure. In the present paper it is explained how these two effects can be taken care of in a
standard LCF crack propagation procedure. The method is illustrated by applying the Finite Element based
crack propagation software CRACKTRACER3D on an engine blade. |
| format | Article |
| id | doaj-art-1c7076e81ca7458fb0b2520f4c95f181 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-1c7076e81ca7458fb0b2520f4c95f1812025-02-03T00:45:29ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932016-01-01103510811310.3221/IGF-ESIS.35.13Prediction of three-dimensional crack propagation paths taking high cycle fatigue into accountGuido Dhondt0MTU Aero Engines AG,GermanyEngine components are usually subject to complex loading patterns such as mixed-mode Low Cycle Fatigue Loading due to maneuvering. In practice, this LCF Loading has to be superimposed by High Cyclic Fatigue Loading caused by vibrations. The changes brought along by HCF are twofold: first, the vibrational cycles which are superposed on the LCF mission increase the maximum loading of the mission and may alter the principal stress planes. Secondly, the HCF cycles themselves have to be evaluated on their own, assuring that no crack propagation occurs. Indeed, the vibrational frequency is usually so high that propagation leads to immediate failure. In the present paper it is explained how these two effects can be taken care of in a standard LCF crack propagation procedure. The method is illustrated by applying the Finite Element based crack propagation software CRACKTRACER3D on an engine blade.http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_13.pdfCrack propagationMixed-modeHigh cycle fatigueMissionVibrations |
| spellingShingle | Guido Dhondt Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account Fracture and Structural Integrity Crack propagation Mixed-mode High cycle fatigue Mission Vibrations |
| title | Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account |
| title_full | Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account |
| title_fullStr | Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account |
| title_full_unstemmed | Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account |
| title_short | Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account |
| title_sort | prediction of three dimensional crack propagation paths taking high cycle fatigue into account |
| topic | Crack propagation Mixed-mode High cycle fatigue Mission Vibrations |
| url | http://www.gruppofrattura.it/pdf/rivista/numero35/numero_35_art_13.pdf |
| work_keys_str_mv | AT guidodhondt predictionofthreedimensionalcrackpropagationpathstakinghighcyclefatigueintoaccount |