TY  - 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 . .