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Πλοήγηση ανά Θέμα "Plastic pipe"

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    • Bending and buckling of internally-pressurized steel lined pipes 

      Gavriilidis I., Karamanos S.A. (2019)
      During offshore installation, steel lined pipes are subjected to severe plastic bending, resulting in detachment of the thin-walled liner pipe from the outer pipe and eventually, the formation of local buckling in the form ...

    • CFRP strengthening of steel pipe elbows subjected to cyclic loading 

      Skarakis I., Chatzopoulou G., Tsouvalis N.G., Karamanos S.A., Pournara A.E. (2016)
      In order to ensure safe operation and structural integrity of pipeline and piping systems, it is sometimes necessary to strengthen specific sections of pipelines and piping systems. Recognizing the variety of mode failures ...

    • Dented externally-pressurised pipes subjected to cyclic axial loading 

      Chatziioannou K., Huang Y., Karamanos S.A. (2019)
      The present paper describes a numerical investigation of the mechanical response of externally-pressurized dented stainless-steel pipes, subjected to reverse cyclic axial loading. This is the first part of a large-scale ...

    • Effect of Manufacturing Process on Lined Pipe Bending Response 

      Gavriilidis I., Karamanos S.A. (2020)
      The effects of manufacturing process on mechanically lined pipe structural performance are investigated. Alternative manufacturing processes are considered, associated with either purely hydraulic or thermo-hydraulic ...

    • Failure analysis of a welded steel pipe at Kullar fault crossing 

      Kaya E.S., Uckan E., O'Rourke M.J., Karamanos S.A., Akbas B., Cakir F., Cheng Y. (2017)
      The seismic response of a 2200-mm-diameter welded steel pipe at strike slip Kullar fault crossing in Izmit, Kocaeli during 1999 Kocaeli earthquake is investigated. The pipe was crossing the fault-line with an angle of 55° ...

    • Influence of lined pipe fabrication on liner wrinkling 

      Gavriilidis I., Karamanos S.A. (2019)
      An economical method to protect offshore pipelines against corrosive ingredients of hydrocarbons is a double-walled (also called “lined” or “bi-metallic”) pipe, in which a thick-walled low-alloy carbon steel (“outer pipe”) ...

    • Numerical simulation of CFRP reinforced steel pipe elbows subjected to cyclic loading 

      Chatzopoulou G., Skarakis I., Karamanos S.A., Tsouvalis N.G., Pournara A.E. (2016)
      Strengthening of pipelines and piping systems under extreme loading conditions increases their operation safety level towards safeguarding their structural integrity. Motivated by the structural integrity of pipelines and ...

    • Numerical simulation of the mechanical behaviour of steel pipe bends under strong cyclic loading 

      Chatzopoulou G., Karamanos S.A. (2020)
      The present study uses advanced numerical tools to examine the mechanical behavior of steel pipe bends (elbows), subjected to strong cyclic loading, associated with repeated plastic deformations of alternate sign. The ...

    • Βehavior of underground energy pipelines under permanent ground displacements 

      Nikolaos A. (2021)
      The seismic performance of oil and natural gas steel pipelines embedded in earth slopes presents great uncertainty related both to the earthquake shaking characteristics and to the natural heterogeneity of geomaterials. ...