Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 3American Society of Mechanical Engineers, 2002 - Arctic regions |
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Page 47
... sensors based on fibre Bragg gratings ( FBG ) make it possible to realise various sensing systems in the riser annulus . A possible combination of different fibre optic sensors is outlined . INTRODUCTION = Larger water depths and the ...
... sensors based on fibre Bragg gratings ( FBG ) make it possible to realise various sensing systems in the riser annulus . A possible combination of different fibre optic sensors is outlined . INTRODUCTION = Larger water depths and the ...
Page 48
... sensors within the armouring wires in the riser annulus ( Eriksrud , 2000 ) . The sensors can be made with a diameter in the order of 1mm and thereby bonded by epoxy into a small groove which has been provided for this purpose in the ...
... sensors within the armouring wires in the riser annulus ( Eriksrud , 2000 ) . The sensors can be made with a diameter in the order of 1mm and thereby bonded by epoxy into a small groove which has been provided for this purpose in the ...
Page 49
... SENSOR DESIGN Sensors to be integrated in grooves in the armour wires of a flexible riser must fulfil various types of requirements . There are no severe limitations for the overall length ( except for spatial resolution ) , but the ...
... SENSOR DESIGN Sensors to be integrated in grooves in the armour wires of a flexible riser must fulfil various types of requirements . There are no severe limitations for the overall length ( except for spatial resolution ) , but the ...
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alloys analysis applied approximately assessment bending calculated carried coating compared composite compressive considered corrosion crack crack growth curve cycles damage defect deformation depth determined developed direction distribution effect element Engineering equation estimated evaluation experience factor failure fatigue field Figure flaw flexible fracture function geometry given Grade heat higher hydrogen important increase initial installation insulation integrity International joint length limit load locations lower material maximum mean measured mechanical method observed obtained Offshore operation parameters performed pipe plate predicted present pressure problem procedure production properties range reliability residual resistance respectively riser rope safety samples shown shows side simulation solution specimens standard steel strain strength stress structure surface Table temperature tensile tension thermal thickness titanium toughness uncertainties variables weld