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Vol.23, No.3, 2023, pp. 239–244 |
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NUMERICAL, ANALYTICAL AND EXPERIMENTAL DETERMINATION OF REMAINING LIFE OF A PIPE WITH AN AXIAL CRACK Aleksandar Sedmak1, Aleksandar Grbović1, Radzeya Zaidi1, Snežana Kirin2, Nikola Vitas3, Tamara Golubović4, Ivana Vučetić2 1) University of Belgrade, Faculty of Mechanical Engineering, Belgrade, SERBIA *email: aleksandarsedmak@gmail.com 2) University of Belgrade, Innovation Centre of the Faculty of Mechanical Engineering, Belgrade, SERBIA 3) Ministry of Economy, Belgrade, SERBIA 4) University of Belgrade, Innovation Centre of the Faculty of Technology and Metallurgy, Belgrade, SERBIA
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Abstract Numerical and analytical methods are applied to determine the remaining life of oil rig pipe with an axial crack. Analytical expressions for surface cracks are used to calculate stress intensity factors for different crack geometries and estimate the remaining life directly by using Paris law. The same procedure is applied by using the FEM, verified previously by experimental results. Good agreement between analytical and numerical results is demonstrated. Keywords: axial crack, extended finite element method, Paris law, API J55 steel |
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