TY  - JOUR
AU  - Muthanna, Bassam Gamal Nasser
AU  - Bouledroua, Omar
AU  - Meriem-Benziane, Madjid
AU  - Setvati, Mahdi Razavi
AU  - Đukić, Miloš
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3465
AB  - Pipe elbows (bends) are considered critical pressurized components in the piping systems and pipelines due to their stress intensification and the effect of bend curvature. They are prone and hence more exposed to different corrosion failure modes than straight pipes. Late detection of such elbow damages can lead to different dangerous and emergency situations which cause environmental disasters, pollution, substantial consumer losses and a serious threat to human life. A comprehensive safety and reliability assessment of pipe elbows, including usage of prediction models, can provide significant increases in the service life of pipelines. It is well known that the limit pressure is an important parameter to assess the piping integrity. In this paper, the integrity assessment of damaged pipeline elbows made of API 5L X52 steel was done within the framework of numerical modeling using the finite element method (FEM) and finite element analysis (FEA). The evaluation of numerically FEM modeled limit pressure in the corroded elbow containing a rectangular parallelepiped-shaped corrosion defect with rounded corners at the intrados section was done and compared to different codes for calculating limit pressure. Moreover, the area with the corrosion defects with different relative defect depth to wall thickness ratios was FEM modeled at the intrados section of the pipe elbow where the highest hoop stress exists. The results showed that the codes for straight pipes could not be applied for the pipe elbows due to the significantly higher error in the obtained limit pressure value compared with numerically FEM obtained results. However, the results for modified codes, adapted for the pipe elbow case using the Goodall formula for calculation of the hoop stress in pipe elbows with defects are pretty consistent with the numerical FEA results. The notch failure assessment diagram (NFAD) was also used for the straight pipe and pipe bends with different corrosion defect depth ratios, while the obtained critical defect depth ratios further highlighted the criticality of pipe elbows as an essential pipeline component.
PB  - Elsevier Sci Ltd, Oxford
T2  - International Journal of Pressure Vessels and Piping
T1  - Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram
VL  - 190
DO  - 10.1016/j.ijpvp.2020.104291
ER  - 

@article{
author = "Muthanna, Bassam Gamal Nasser and Bouledroua, Omar and Meriem-Benziane, Madjid and Setvati, Mahdi Razavi and Đukić, Miloš",
year = "2021",
abstract = "Pipe elbows (bends) are considered critical pressurized components in the piping systems and pipelines due to their stress intensification and the effect of bend curvature. They are prone and hence more exposed to different corrosion failure modes than straight pipes. Late detection of such elbow damages can lead to different dangerous and emergency situations which cause environmental disasters, pollution, substantial consumer losses and a serious threat to human life. A comprehensive safety and reliability assessment of pipe elbows, including usage of prediction models, can provide significant increases in the service life of pipelines. It is well known that the limit pressure is an important parameter to assess the piping integrity. In this paper, the integrity assessment of damaged pipeline elbows made of API 5L X52 steel was done within the framework of numerical modeling using the finite element method (FEM) and finite element analysis (FEA). The evaluation of numerically FEM modeled limit pressure in the corroded elbow containing a rectangular parallelepiped-shaped corrosion defect with rounded corners at the intrados section was done and compared to different codes for calculating limit pressure. Moreover, the area with the corrosion defects with different relative defect depth to wall thickness ratios was FEM modeled at the intrados section of the pipe elbow where the highest hoop stress exists. The results showed that the codes for straight pipes could not be applied for the pipe elbows due to the significantly higher error in the obtained limit pressure value compared with numerically FEM obtained results. However, the results for modified codes, adapted for the pipe elbow case using the Goodall formula for calculation of the hoop stress in pipe elbows with defects are pretty consistent with the numerical FEA results. The notch failure assessment diagram (NFAD) was also used for the straight pipe and pipe bends with different corrosion defect depth ratios, while the obtained critical defect depth ratios further highlighted the criticality of pipe elbows as an essential pipeline component.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "International Journal of Pressure Vessels and Piping",
title = "Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram",
volume = "190",
doi = "10.1016/j.ijpvp.2020.104291"
}

Muthanna, B. G. N., Bouledroua, O., Meriem-Benziane, M., Setvati, M. R.,& Đukić, M.. (2021). Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram. in International Journal of Pressure Vessels and Piping
Elsevier Sci Ltd, Oxford., 190.
https://doi.org/10.1016/j.ijpvp.2020.104291

Muthanna BGN, Bouledroua O, Meriem-Benziane M, Setvati MR, Đukić M. Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram. in International Journal of Pressure Vessels and Piping. 2021;190.
doi:10.1016/j.ijpvp.2020.104291 .

Muthanna, Bassam Gamal Nasser, Bouledroua, Omar, Meriem-Benziane, Madjid, Setvati, Mahdi Razavi, Đukić, Miloš, "Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram" in International Journal of Pressure Vessels and Piping, 190 (2021),
https://doi.org/10.1016/j.ijpvp.2020.104291 . .

TY  - JOUR
AU  - Muthanna, Bassam Gamal Nasser
AU  - Bouledroua, Omar
AU  - Meriem-Benziane, Madjid
AU  - Setvati, Mahdi Razavi
AU  - Đukić, Miloš
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3943
AB  - Pipe elbows (bends) are considered critical pressurized components in the piping systems and pipelines due to their stress intensification and the effect of bend curvature. They are prone and hence more exposed to different corrosion failure modes than straight pipes. Late detection of such elbow damages can lead to different dangerous and emergency situations which cause environmental disasters, pollution, substantial consumer losses and a serious threat to human life. A comprehensive safety and reliability assessment of pipe elbows, including usage of prediction models, can provide significant increases in the service life of pipelines. It is well known that the limit pressure is an important parameter to assess the piping integrity. In this paper, the integrity assessment of damaged pipeline elbows made of API 5L X52 steel was done within the framework of numerical modeling using the finite element method (FEM) and finite element analysis (FEA). The evaluation of numerically FEM modeled limit pressure in the corroded elbow containing a rectangular parallelepiped-shaped corrosion defect with rounded corners at the intrados section was done and compared to different codes for calculating limit pressure. Moreover, the area with the corrosion defects with different relative defect depth to wall thickness ratios was FEM modeled at the intrados section of the pipe elbow where the highest hoop stress exists. The results showed that the codes for straight pipes could not be applied for the pipe elbows due to the significantly higher error in the obtained limit pressure value compared with numerically FEM obtained results. However, the results for modified codes, adapted for the pipe elbow case using the Goodall formula for calculation of the hoop stress in pipe elbows with defects are pretty consistent with the numerical FEA results. The notch failure assessment diagram (NFAD) was also used for the straight pipe and pipe bends with different corrosion defect depth ratios, while the obtained critical defect depth ratios further highlighted the criticality of pipe elbows as an essential pipeline component.
PB  - Elsevier Sci Ltd, Oxford
T2  - International Journal of Pressure Vessels and Piping
T1  - Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram
VL  - 190
DO  - 10.1016/j.ijpvp.2020.104291
ER  - 

@article{
author = "Muthanna, Bassam Gamal Nasser and Bouledroua, Omar and Meriem-Benziane, Madjid and Setvati, Mahdi Razavi and Đukić, Miloš",
year = "2021",
abstract = "Pipe elbows (bends) are considered critical pressurized components in the piping systems and pipelines due to their stress intensification and the effect of bend curvature. They are prone and hence more exposed to different corrosion failure modes than straight pipes. Late detection of such elbow damages can lead to different dangerous and emergency situations which cause environmental disasters, pollution, substantial consumer losses and a serious threat to human life. A comprehensive safety and reliability assessment of pipe elbows, including usage of prediction models, can provide significant increases in the service life of pipelines. It is well known that the limit pressure is an important parameter to assess the piping integrity. In this paper, the integrity assessment of damaged pipeline elbows made of API 5L X52 steel was done within the framework of numerical modeling using the finite element method (FEM) and finite element analysis (FEA). The evaluation of numerically FEM modeled limit pressure in the corroded elbow containing a rectangular parallelepiped-shaped corrosion defect with rounded corners at the intrados section was done and compared to different codes for calculating limit pressure. Moreover, the area with the corrosion defects with different relative defect depth to wall thickness ratios was FEM modeled at the intrados section of the pipe elbow where the highest hoop stress exists. The results showed that the codes for straight pipes could not be applied for the pipe elbows due to the significantly higher error in the obtained limit pressure value compared with numerically FEM obtained results. However, the results for modified codes, adapted for the pipe elbow case using the Goodall formula for calculation of the hoop stress in pipe elbows with defects are pretty consistent with the numerical FEA results. The notch failure assessment diagram (NFAD) was also used for the straight pipe and pipe bends with different corrosion defect depth ratios, while the obtained critical defect depth ratios further highlighted the criticality of pipe elbows as an essential pipeline component.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "International Journal of Pressure Vessels and Piping",
title = "Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram",
volume = "190",
doi = "10.1016/j.ijpvp.2020.104291"
}

Muthanna, B. G. N., Bouledroua, O., Meriem-Benziane, M., Setvati, M. R.,& Đukić, M.. (2021). Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram. in International Journal of Pressure Vessels and Piping
Elsevier Sci Ltd, Oxford., 190.
https://doi.org/10.1016/j.ijpvp.2020.104291

Muthanna BGN, Bouledroua O, Meriem-Benziane M, Setvati MR, Đukić M. Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram. in International Journal of Pressure Vessels and Piping. 2021;190.
doi:10.1016/j.ijpvp.2020.104291 .

Muthanna, Bassam Gamal Nasser, Bouledroua, Omar, Meriem-Benziane, Madjid, Setvati, Mahdi Razavi, Đukić, Miloš, "Assessment of corroded API 5L X52 pipe elbow using a modified failure assessment diagram" in International Journal of Pressure Vessels and Piping, 190 (2021),
https://doi.org/10.1016/j.ijpvp.2020.104291 . .