... ABSTRACT The bulkhead panel produced by gluing steel sheet to a mineral wool is mainly used for the offshore or onshore installations. In general, the mechanical properties of mineral wool are not taken into account when performing structural response analysis. However, the mineral wool could...

... ABSTRACT: Three different types of steel, normalized, normalized-z and TMCP-z steels, have been studied for the cracking susceptibility in the thickness direction using the implant tests and the thermal simulator. The results obtained from the implant tests indicated that the TMCP-z steel has...

... ABSTRACT: The local corrosion of high-strength steel of 440N/mm 2 class manufactured by the thermo-mechanical control process was examined. INTRODUCTION The local corrosion of welded joints of icebreakers resulting from damage of paint and cathodic protection by ice collision is a problem...

... ABSTRACT: A new steel multi-well (112 headwells) platform was developed by Bohai Engineering and Design company in China. New Diversion Setting Foundation is adopted in this steel platform, which has rectangular deck supported by four large columns. Unlike conventional fixed platform...

... Nippon .'ltc ('01 pOI ation l\illIilgil\\iI .f.tPAN ABSTRACT The higher strength steels often show HEAT-AFFECTED ZONE (HAZ) softening. In the previous study, it was shown that CTOD toughness is much more important than strength matching to get higher welded joint performance in a stress concentrated...

... smaller proportion specimen welding electrode expansion coefficient metals & mining coefficient alloyed austenitic steel tensile strength steel specimen microstructure thermal expansion electrode weld metal austenitic steel stainless steel expansion investigation steel...

... ABSTRACT: With 14 samples of various chemical compositions of 12% Cr steel and one 1% CrMoV steel, the effect of back stress on creep rate was studied in relation with activation energy and stress exponent. Back stress is depended on applied stress and temperature. The equation can...

... ABSTRACT: Fatigue crack propagation behavior of conventional steels and newly developed " OCP steels was studied. Fatigue crack propagation rate (FCPR) was measured in heat affected zone. cross bond area of weld and in base metal. The results showed that the FCPR in THCP steels was higher than...

... on the formation and decomposition of the M*. It was clarified that combination of steel with low carbon, low microa110y chemical composition and suitable welding condition, such as application of preheating and thin weld bead placement, is important for reducing or eliminating the H*. 1. INTRODUCTION Since low...

... crack h2s management fracture surface extension specimen configuration production chemistry corrosion management newman cod fatigue precrack tip stress corrosion matenal evaluation method analytic compliance formula hydrogen steel specimen subsequent jle test compliance formula...

... work, an attempt has been made to study the behaviour of duplex steel in the simulated atmosphere of oil well by using mixture of 8.00% H 2 S and 21% CO 2 with L.P.G. as carrier gas. The duplex steel coupons did not show any perceptible changes in weight in the simulated gas mixture up to 311 hours...

... ABSTRACT: While recently developed platform steels have excellent low temperature toughness properties they may be nevertheless, susceptible to cleavage fracture initiation at focally brittle zones (LBZ" s) developed in coarse grain heat affected zones (CGHAZ" s) of welds. Current offshore...

... ABSTRACT: The demand of high strength steel for ship and offshore structure application has been changed from conventionally heat treated steel to TMCP steel, because the latter provides the improved strength - toughness balance and weldability. Enhanced property of TMCP steel comes from...

... riser corrosion selection subsurface corrosion h2s management hydrogen coating offshore matenal sulphide oilfield chemistry sour gas steel jacket pipe corrosion management tlon protection upstream oil & gas partial pressure pipeline corrosion production chemistry transportation...