...%, and 100% of the base material for the range: 500 ≤ D/t ≤ 2000. For two-layer domes (outer layer–steel, inner layer– auxetic), the best configurations of wall thickness are identified. This is an entirely numerical study based on the FE technology. INTRODUCTION Auxetic materials can be broadly divided...

... is conducted. The comparison is done for the base material and the welded condition by the help of axial and bending specimens. Additionally integral samples containing base material, the heat-affected zone and the welding filler material were investigated. INTRODUCTION Nodular cast iron (GJS) (DIN EN 1563...

... process with different welding electrodes on large cast blocks with premanufactured defects the quasi-static and cyclic material behavior of the base material and the welding filler material was determined. Additionally integral samples containing base material, the heat transfer zone and the welding...

... stress can rise to such high levels that only a very limited plastic zone ahead of a crack will occur before unstable (brittle) fracture results. This material brittleness will not occur in FCC alloys (Aluminium), and a ductile fracture mode will prevail. base material mechanical property...

..., with ICCGHAZ showing a higher DBTT than CGHAZ. The arrest DBTT temperature (TK Ia ) for the base material, estimated from an empirical correlation with initiation reference temperature T 0 , was found to be around −50°C. Based on the suggested 4kN force drop value of the V-notch Charpy tests, TK Ia...

... on the tensile testing of base materials and weld thermal simulated microstructures (CGHAZ and ICCGHAZ) from a 420 MPa steel at 0, −30, −60 and -90°C. The dependency of yield stress, tensile strength, Lüders strain as well as strain hardening on temperature will be discussed. For situations where tensile test...

... bend pipe. Internal pressure is shown as the most critical factor in triggering the tensile fracture of wrinkled pipes. internal pressure tensile fracture fracture criterion fracture base material piping simulation finite element analysis tensile side specimen modification cold bend...

... Abstract Steels used in critical components in offshore infrastructure often must undergo a pre-production material qualification test program per API Recommended Practice 2Z or a similar methodology to ensure the weld heat affected zone of the base material possesses adequate levels...

... metal specimen ductile compression brittle fracture base material low temperature installation configuration test joint Reeling Installation of Rigid Steel Pipelines at Low Temperature Espen Heier1, Erling Østby2 and Odd M. Akselsen2,3 1 Technip, Sandvika, Norway 2 SINTEF, Trondheim, Norway...

... materials to be joined. thickness 1018 tool material friction stir welding welding process jeremy peterson fsw fsw machine steel sam sanderson base material microstructure welding paul higgins diameter thickness mahoney pcbn blank metals & mining ABST Frictio many histori...

... evolution tensile specimen deformation burst pressure experiment thickness linepipe fabrication factor offshore pipeline certificate hoop direction consequence midstream oil & gas pipe residual stress hydrotest base material specimen inversion plastic deformation tensile property...

.... Microstructure of the stir zone (SZ) mainly consisted of the quenched martensite with low fraction of bainite, which led to very high hardness. The decrease in rotational speed could significantly reduce fraction of quenched martensite in the SZ, resulting in roughly the same hardness of the base material...

.... production chemistry metals & mining oilfield chemistry pipeline corrosion phase precipitation grain size refinement corrosion management duplex stainless steel riser corrosion refinement stainless steel corrosion resistance flowline corrosion corrosion inhibition base material sdss fsw...

... weld joint base material mechanical heterogeneity Fracture Driving Forces of Cracked Girth Welds with Mechanical Heterogeneity for X80 Pipes Qingren Xiong 1,2 Lin Yan1 Jianxun Zhang 1 Yaorong Feng 1,2 Weiwei Zhang 2 Hongyuan Chen 2 1 Xian Jiaotong University, Xi an, Shaanxi, China 2 CNPC Research...

... that the fatigue strength of welded joints commonly is much lower than the fatigue strength of the related base material [Maddox 2004, Heeschen 1986]. The most important reason is, that different types of notches, which are connected with the production of different types of welds are responsible...

... stresses after higher number of load cycles, which are uniformly close to the cyclic yield strength of the base material. INTRODUCTION In literature much discussion is found on the influence of residual stresses on the fatigue behaviour of welded structures. Usually it is assumed that tensile residual...

... In this paper the results from SENT testing of two different welding procedures using an X65 base material is presented. The first welding procedure yields close to evenmatch conditions, whereas the second welding procedure gives 10-15% overmatch compared to the base material. Both defects lying...

...Effect of Plate Thickness on Fatigue Strength of Base Material and Butt Welded Specimens Made from EH40 Steel Thick Plates: Phase 1 Helena Polezhayeva and Clive Badger Lloyd's Register EMEA London, United Kingdom ABSTRACT In large vessels, the thickness of deck plating has increased significantly...

... in these regions because of increasing transportation efficiency and reducing welding costs (Glover, 2003). haz critical global strain specimen strain limit plate thickness offshore pipeline global strain equivalent plastic strain dimension base material relation notch tip strength ductile...

... and the base material on the ductile crack limit, with particular emphasis on equivalent plastic strain at the notch tip. In addition, the strain capacity of a 30" pipeline is also considered by comparing tensile strain and equivalent plastic strain at the notch tip corresponding to a critical compressive...