Fatigue crack growth in a structure exposed to high temperature
Само за регистроване кориснике
2021
Аутори
Elayeb, Abdelnaser AbdusalamGrbović, Aleksandar
Kastratović, Gordana
Vidanović, Nenad
Valenta, Tomas
Ivanović, Ivana
Sedmak, Aleksandar
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The exhaust nozzle, made of titanium, is the part of a jet engine where the final expansion of the hot gas from the turbine occurs and where the speed of the exhaust gas is further increased to create thrust. During the work, it is exposed to elevated temperatures and compressive and hoop stresses, which makes the cracks' occurrence in the exhaust nozzle's inner sleeve unavoidable, making repairs during maintenance necessary. In this study, crack growth in the repaired inner sleeve was analyzed. The aim of the study was to evaluate the fatigue life of the damaged inner sleeve when a new method of repair is applied and to compare obtained number of cycles with the number observed in the maintenance workshop after the old method of repair was used. Developing the numerical model and conducting simulations using the extended finite element method (XFEM) and finite element method (FEM), it was concluded that a new type of repair should be used to provide longer fatigue life of the damaged ...exhaust nozzle.
Кључне речи:
XFEM / Thermo-mechanical fatigue / Thermal loading / FEM / Crack propagationИзвор:
Engineering Failure Analysis, 2021, 127Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
DOI: 10.1016/j.engfailanal.2021.105493
ISSN: 1350-6307
WoS: 000685070100002
Scopus: 2-s2.0-85110347518
Институција/група
Inovacioni centarTY - JOUR AU - Elayeb, Abdelnaser Abdusalam AU - Grbović, Aleksandar AU - Kastratović, Gordana AU - Vidanović, Nenad AU - Valenta, Tomas AU - Ivanović, Ivana AU - Sedmak, Aleksandar PY - 2021 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3512 AB - The exhaust nozzle, made of titanium, is the part of a jet engine where the final expansion of the hot gas from the turbine occurs and where the speed of the exhaust gas is further increased to create thrust. During the work, it is exposed to elevated temperatures and compressive and hoop stresses, which makes the cracks' occurrence in the exhaust nozzle's inner sleeve unavoidable, making repairs during maintenance necessary. In this study, crack growth in the repaired inner sleeve was analyzed. The aim of the study was to evaluate the fatigue life of the damaged inner sleeve when a new method of repair is applied and to compare obtained number of cycles with the number observed in the maintenance workshop after the old method of repair was used. Developing the numerical model and conducting simulations using the extended finite element method (XFEM) and finite element method (FEM), it was concluded that a new type of repair should be used to provide longer fatigue life of the damaged exhaust nozzle. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Engineering Failure Analysis T1 - Fatigue crack growth in a structure exposed to high temperature VL - 127 DO - 10.1016/j.engfailanal.2021.105493 ER -
@article{ author = "Elayeb, Abdelnaser Abdusalam and Grbović, Aleksandar and Kastratović, Gordana and Vidanović, Nenad and Valenta, Tomas and Ivanović, Ivana and Sedmak, Aleksandar", year = "2021", abstract = "The exhaust nozzle, made of titanium, is the part of a jet engine where the final expansion of the hot gas from the turbine occurs and where the speed of the exhaust gas is further increased to create thrust. During the work, it is exposed to elevated temperatures and compressive and hoop stresses, which makes the cracks' occurrence in the exhaust nozzle's inner sleeve unavoidable, making repairs during maintenance necessary. In this study, crack growth in the repaired inner sleeve was analyzed. The aim of the study was to evaluate the fatigue life of the damaged inner sleeve when a new method of repair is applied and to compare obtained number of cycles with the number observed in the maintenance workshop after the old method of repair was used. Developing the numerical model and conducting simulations using the extended finite element method (XFEM) and finite element method (FEM), it was concluded that a new type of repair should be used to provide longer fatigue life of the damaged exhaust nozzle.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Engineering Failure Analysis", title = "Fatigue crack growth in a structure exposed to high temperature", volume = "127", doi = "10.1016/j.engfailanal.2021.105493" }
Elayeb, A. A., Grbović, A., Kastratović, G., Vidanović, N., Valenta, T., Ivanović, I.,& Sedmak, A.. (2021). Fatigue crack growth in a structure exposed to high temperature. in Engineering Failure Analysis Pergamon-Elsevier Science Ltd, Oxford., 127. https://doi.org/10.1016/j.engfailanal.2021.105493
Elayeb AA, Grbović A, Kastratović G, Vidanović N, Valenta T, Ivanović I, Sedmak A. Fatigue crack growth in a structure exposed to high temperature. in Engineering Failure Analysis. 2021;127. doi:10.1016/j.engfailanal.2021.105493 .
Elayeb, Abdelnaser Abdusalam, Grbović, Aleksandar, Kastratović, Gordana, Vidanović, Nenad, Valenta, Tomas, Ivanović, Ivana, Sedmak, Aleksandar, "Fatigue crack growth in a structure exposed to high temperature" in Engineering Failure Analysis, 127 (2021), https://doi.org/10.1016/j.engfailanal.2021.105493 . .