... ABSTRACT Flexible pipes have been increasingly used in the last 10 years for dynamic risers. Their multi-layer composite structure offers the flexibility of polymers and the strength of steel. The present methods to assess their integrity is by periodic pressure testing or to remove a test...

... to the characteristic strength of the material (Stephens and McComell, 1985). The characteristic strength is usually taken as the stress at 0.5% strain referring to a uniaxial stress-strain curve taken from standard tests (specified minimum yield stress, SMYS). At the moment STBD criteria, in relation to allowable...

... seabed materials were encountered, sllts, sllty clays and boulder clays. 36 ADVANCES IN SUBSEA PIPELINE ENGINEERING AND TECHNOLOGY These solls with shear strengths often between 100 and 200 KPA (eg Fulmar 130-160 KPA) but sometlmes exceeding 400 KPA and resembling tough, hard plastlclne, could...

... to corrugated steel pipe. The purpose of this theory is however to describe the behavior of a pipe which provides leak-proofness, flexibility and strength through a combination of polymer elastic material and helically wound reinforcement. The spiral reinforcement takes both hoop and axial tension forces...

... programme fuslon llne testlng fusion line microstructure subsea pipeline engineering od api mechanical testing glven pore strength steel wlth weld hardness test programme test result INTRODUCTION. The Flash Butt Welding (FBW) technique is developed by the Russians...