Carbon fibre buckle arrestors for offshore pipelines

M Alrsai, H Karampour, W Hall, AK Lindon… - Applied Ocean …, 2021 - Elsevier
Feasibility and efficiency of using carbon fibre reinforced polymer (CFRP) buckle arrestors in
steel offshore pipelines with D/t of 28 and 40 are investigated using hyperbaric chamber …

Parametric study on buckling stability of CFRP-strengthened cylindrical shells subjected to uniform external pressure

P Taraghi, T Zirakian, H Karampour - Thin-Walled Structures, 2021 - Elsevier
Stability performance of cylindrical shells and providing a potential method to enhance the
buckling stability of these structures are major concerns for designers. Carbon Fiber …

Influence of FRP arrestors on the dynamic collapse and implosion of underwater pipelines

Y Yu, W Xu, H Wang, S Xu - Ocean Engineering, 2022 - Elsevier
The dynamic collapse of pipelines in deep water can create pressure pulses that affect the
performance of surrounding structures. In this study, the pipe implosion process was …

Numerical analysis and optimization of CFRP buckle arrestors in subsea pipelines

M Alrsai - Marine Structures, 2024 - Elsevier
This research investigates the collapse mechanisms and crossover pressure capacity of
carbon fiber-reinforced polymer (CFRP) buckle arrestors in subsea pipelines. A nonlinear …

Collapse failure of textured subsea pipeline under external pressure; numerical and parametric study

M Alrsai, H Karampour, H Alsanat - Ocean Engineering, 2022 - Elsevier
The concept of pseudo-cylindrical concave polyhedral (PCCP) shell is adopted for subsea
pipeline applications and termed as “textured pipe”. In this study, the collapse responses of …

Underwater implosion protection of a new concept composite structure for a deep-sea hollow ceramic sphere with CFRP shield

X Zhang, M Zhao, J Xia, T Ge - Ocean Engineering, 2024 - Elsevier
Carbon fiber–reinforced polymers (CFRP) and ceramics are lightweight, non-metallic
materials with broad applications. However, their use in deep-sea engineering is limited …

Experimental and analytical evaluation of the performance of hybrid steel-CFRP pipelines at high external pressures

M Alrsai, H Karampour, H Alsanat, H Guan, H Lin - Engineering Structures, 2024 - Elsevier
Behavior of hybrid steel-CFRP pipe systems under external pressures is studied herein
using a combination of experimental, analytical, and finite element (FE) methods. Hyperbaric …

Experimental and numerical assessment on failure pressure of textured pipelines

H Karampour, M Alrsai… - Journal of …, 2022 - asmedigitalcollection.asme.org
A series of physical tests and finite element (FE) analyses are conducted to evaluate the
failure of smooth (conventional) and textured (proposed concept) pipes. To do so …

On Propagation Capacity of Hybrid Steel-CFRP (HSC) Subsea Pipelines Under External Pressure

M Alrsai, H Karampour, A Alsahalen - ISOPE International Ocean and …, 2024 - onepetro.org
This study investigates the buckle propagation responses of hybrid steel-CFRP (HSC)
pipelines under external hydrostatic pressure through analytical and experimental analyses …

Collapse Mechanisms of Composite Pipelines Under External Pressure

Z Wei, H Karampour, H Guan, H Rasheed… - … International Ocean and …, 2022 - onepetro.org
This study investigates the effect of wrapping carbon fiber reinforced polymer (CFRP) over
conventional steel offshore pipelines on improving their capacity under external hydrostatic …