... modeling & simulation heating residual stress distribution shipbuilding induction heating stiffened plate structure artificial intelligence plate structure deformation residual stress machine learning algorithm process parameter induction heating process welding deformation...

... ABSTRACT The double-curved plates forming is an important task in shipbuilding, and the line heating plate forming method is the traditional complex curved plate forming process. This paper proposes the double-sided electromagnetic induction line heating process used in plate forming. By using...

... ABSTRACT Based on the enthalpy-porous medium theory, a mathematical model of the melting phase transition process of waxy crude oil in shipwreck oil tanks is established. The research results show that in the early stage of melting, the heating rate decreases with the increase of wax content...

... prediction procedure dimensional analysis technological parameter ship hull plate artificial intelligence steel plate heating inherent strain method procedure deformation line heating dong tum angular deformation heat source coefficient machine learning thermal process...

... ABSTRACT In this study, the proposed linearized inherent strain method for predicting straightening of welded structures is investigated. Thermal elastic-plastic analysis is used to compute inherent strain of a thin flat plate caused by line heating. An accurate gas heat source model...

... ABSTRACT Plates with double curvature are widely used in shipbuilding, and induction heating for plate bending is usually employed in shipyards due to its advantages such as high precision, high efficiency and so on. In this study, induction heating equipment with high frequency and 25KW...

... Next Generation Heating of Subsea Oil Production Pipelines Jens Kristian Lervik1, Øyvind Iversen2, Kristian Thinn Solheim1 1SINTEF Energy Research Trondheim, Norway 2Nexans Norway AS, Oslo, Norway ABSTRACT A development programme founded by the Norwegian Research Council for further increase...

... Abstract Hydrate management by direct electric heating (DEH) has been in use for 15 years. The system has been continuously improved and adapted to the specific requirements during the development of new fields. Presently the system is designed for around 5 years of usage during the lifetime...

... Abstract Submarine XLPE (cross-linked polyethylene) insulated cables of wet design have been manufactured and delivered by Nexans for more than 40 years, including cables for Direct Electric Heating (DEH) of flowlines for the last 15 years. In a DEH system the cable is strapped (‘piggybacked...

... remediation heating inhibitor pipeline pigging asphaltene inhibition insulation pour point production chemistry deposition wax inhibition tech conf pipe wall remediation of hydrates upstream oil & gas active heating oilfield chemistry precipitation scale inhibition scale remediation wax...

... and subsurface sediment motions. In this paper, a numerical approach is described to investigate the effects of gas hydrate dissociation induced by constant heating from a hot wellbore on sediment engineering properties and the radial extent of hydrate dissociation influence zone. The effects of the following...

... Abstract As it becomes profitable to extract oil and gas from smaller reservoirs, jumpers (t-offs) connected to the main flowlines become necessary. Hydrate management of these jumpers may be solved by electrical heating systems. This requires development of new subsea electric power...

... Abstract The manual flame heating has been used in the conventional line heating to form the curved plate. High frequency induction heating could be a good alternative process for the automation of line heating process because of its easiness to control the heat flux. The purpose of this study...

...% after the thermal aging. pipe deformability heating offshore shear area uoe line pipe microstructure line pipe thermal aging heat treatment frequency distribution longitudinal direction uniform elongation crack arrestability polygonal ferrite shinohara Mass Production of X70...

... ABSTRACT In this study, the performance of the sea water cooling system was analyzed by comparatively testing its cooling performance against that of the following methods using diverse sea water heat sources and the existing deep sea water intake systems of the Deep Sea Water Research Center...

... Performance Characteristics of Tandem Heat Pump System using Deep Ocean Water Ho-Saeng Lee1, Hyeon-Ju Kim , Dong-Ho Jung1, Seung-Won Lee1 and Deok-Soo Moon1 Deep Ocean Water Application Center, Korea Ocean Research & Development Institute Goseong-gun, Gangwon-do, Korea . . ABSTRACT This study...

...-of-plane deformations between stiffeners are frequent. These deformations are usually straightened by correction heating (flame heating method). After correction heating, the blocks are lifted and moved by cranes to assemble it at dry-dock stage. After this lifting process, out-of-plane deformation again...

... ABSTRACT: The present work involves examinations of the microstructure evolution that can occur during welding in the two phase austenite and ferrite region of a high strength low alloy (HSLA) steel that is designed for low temperature applications. This was done by combining in situ heating...

... Influential Factors Affecting Inherent Deformation during Plate Forming by Line Heating (Report 5) The Effect of Water Cooling Adan Vega Department of Mechanical Engineering, Technological University of Panama, Panama Masashi Nawafune Graduate School of Engineering, Osaka University, Ibaraki...

... ABSTRACT The use of Direct Electrical Heating (DEH) for sub-sea pipelines has become a method for hydrate and wax management control either by itself, or as part of other hydrate management and control techniques. The method is based on resistive heating of the steel pipe by leading electrical...