... than either making the pipe from the CRA or metallurgically bonding CRA to the pipe (ie clad pipe). Lined pipe is gaining popularity, and has so far been used successfully in applications where applied strain levels are low, however more data is needed on its fatigue strength and its behavior when...

... fluid management & disposal drilling data fatigue strength drilling fluids and materials axial dynamic stress ship motion upstream oil & gas deep drilling evaluation inclination ocean current occurrence probability drillstring design References References Inoue , T...

.... When as-built weld quality limits the targeted fatigue life, ultrasonic peening could enhance the fatigue strength up to a desired level. For weld details which have already consumed half of their fatigue life ultrasonic peening can reset the clock to zero. The increased fatigue resistance due...

... strength and the primary and secondary structures have been reviewed regarding yielding, buckling and fatigue strength. The typical defects and the main degradation modes based on the return of experience with tankers are also identified and a set of hull design parameters are described in order...

...]. initiation specimen fatigue strength seawater strength ultrasonic impact treatment concentration upstream oil & gas metals & mining steel fatigue performance weldment thermal stress amplitude ultrasonic impact fatigue resistance weld toe weld stress concentration residual stress...

... to the standard double filletweld. Among the one-sided welds, the differences in the fatigue strength wereslight. The findings show that existing design rules for longitudinal filletwelds in bridges can be used for ships. The data provide a rational basis forthe selection of longitudinal weld joints, fit-up...

... Abstract Fatigue data for repair welded offshore structures are still lacking. As acontribution to this subject, laboratory tests on the fatigue strength ofhyperbaric dry repair welded butt welds have been carried out. The tests werecarried out in air. The data thus represent the fatigue...

... ABSTRACT Localized corrosion damage may be detrimental to the fatigue strength of offshore steel structures. An investigation was carried out in order to assess the effect of corrosion pits on the fatigue strength of planar and tubular welded joints. Pitting corrosion was selected...

... ABSTRACT Bending fatigure tests were carried out on the cruciform welded joints of 25mm, 50mm, 100mm and 200mm thick plates to investigate the effect of plate thickness on the fatigue strength. The size effect on both the crack initiation life and crack propagation life was observed...

... seawater intrusion fatigue strength parallel wire cable tether study socket yoshiwaka strength aTC 5613 New Parallel Wire Cable Tether Study for Deepwater TLP by H. Okamura, Nippon Steel Corp.; J. Inoue, Nippon Steel USA Inc.; and Y. Hajima, H. Yoshiwaka, and H. Okubo, Nippon Steel Corp. Copyright...

... ABSTRACT As Tendon strings of Tension Leg Platform are used in seawater under high alternating load and the fatigue strength of high tensile strength steel is remarkably lower in seawater than that in air, the most important performances are the seal integrity and the fatigue strength...

... 1. Abstract It is of primary importance for a semi-sub rig to have the sufficient fatigue strenght particularly when operating in a harsh environmental condition. In the study on the fatigue strength of a semi-sub rig, it is joint parts of the principal structural members that we should focus...

... one type of connection has been examined and to the author's knowledge this is the first attempt to assess the fatigue strength of split sleeve bolted clamps. Figure 2 shows the general arrangement of the specimen which represents a typical repair. clamp arrangement tubular member static...

... 490 MPa class high strength steels. Tubular T-joint specimens and cruciform welded joint specimens made of TMCP steels and normalized steels were fatigue-tested in synthetic seawater, and corrosion fatigue strength of both tubular and cruciform welded joints of TMCP steels appeared to be equal...

...-performance tendon steel fabrication process seam weld toughness oilfield chemistry weld riser corrosion base metal fatigue property seawater weld joint fatigue strength flowline corrosion corrosion inhibition mechanical property welding heating OTC 5155 High-Performance Tendon for TLP...

.... A large tension load is applied to legs to make heave motion depressed. Therefore, legs are subjected to a significant tension load superimposed with cyclic loading due to wave motion. This results in the necessity of high strength, high toughness and high fatigue strength material for TLEs. The strength...

...–1.2. The fatigue strength of the girders complied with current design codes. INTRODUCTION Fatigue design of steel plated structures is based on constant amplitude endurance curves (S-N curves for individual types of welded joints 1–4 . The design S-N curves have been assessed on the basis of test...

... ABSTRACT Advantage of the application of high strength steels to offshore structures was investigated on the basis of fatigue strength. It was concluded that the tethers of a tension leg platform are one of the typical structural components which can make the best use of a high strength steel...

... to the reliability of offshore mooring chains of the grade ORQ were examined during the study. The program included the following main topics: Fracture Strength and Toughness Fatigue Strength Stress analyses and line tension analyses. Reliability of applied NDE method Size distribution of defects...

... steel ste 355 ste 690 carbon equivalent metals & mining fatigue strength strength level upstream oil & gas approx critical defect size thickness welding high-strength steel offshore structure structural element resistance steel industry toughness OTC 5072 by B. Muesgen, H...