Blar i UiS Brage på forfatter "Atteya, Mostafa Ahmed"
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Experimental assessment of cracked tubular joints repaired with crack-deflecting holes and weld-toe grinding
Riise, Simen; Atteya, Mostafa Ahmed; Mikkelsen, Ove; Ersdal, Gerhard (Peer reviewed; Journal article, 2023)Tubular joints in offshore structures for energy production are exposed to cyclic loading and may experience fatigue cracking. Presently, the inspection method commonly used for such structures will primarily detect whether ... -
Experimental evaluation of the axial capacity of cracked tubular member
Riise, Simen (Bachelor thesis, 2021)This thesis experimentally investigated the compressive axial capacity of cracked tubular members. Then compared it to NORSOK N-004 (Standard Norge 2004) formulae. Further, the test results were compared with other analytical ... -
Lateral torsional buckling capacity of corroded steel beams: A parametric study
Kullashi, Greta; Siriwardane, Sudath C.; Atteya, Mostafa Ahmed (Peer reviewed; Journal article, 2021)Thickness reduction due to uniform corrosion increases the tendency of lateral torsional buckling (LTB) of open cross-sections and it reduces the moment capacity of the beam. The effect of the various corrosion cases on ... -
Local joint flexibility of tubular offshore joints with eccentric brace to chord connections
Thorkildsen, Alexander (Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06-30)Local joint flexibility of tubular offshore joints has been researched to be able to account for correct deflection and redistribution of member forces and moments. This has shown to improve design life prediction for ... -
Numerical Stress Analysis of Tubular Joints
Santacruz, Alejandro (Master thesis, 2021) -
State-of-the-art of crack propagation modelling in tubular joints
Atteya, Mostafa Ahmed; Mikkelsen, Ove; Lemu, Hirpa G. (Peer reviewed; Journal article, 2019)Offshore structures are conventionally designed for a service life between 20-30 years and mostly used beyond their service life. They are operated up to the point where costs of operations, maintenance and repair exceed ... -
Statistical evaluation of tubular joint SCFs from test data and finite element analyses
Ersdal, Gerhard; Atteya, Mostafa Ahmed; Mikkelsen, Ove (Peer reviewed; Journal article, 2023)Stress concentration factors (SCF) derived from both FEA and measurements from laboratory experiments are associated with uncertainties. To understand these uncertainties, SCF values can be determined from a series of tests ...