The Experts below are selected from a list of 123 Experts worldwide ranked by ideXlab platform
Cai Chang-si - One of the best experts on this subject based on the ideXlab platform.
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Mooring effect of short island berth
Port & Waterway Engineering, 2009Co-Authors: Cai Chang-siAbstract:The experimental research result and the Mooring Equipment Guidelines by OCIMF indicate that a reasonable layout of short island berth brings about better Mooring effects,and especially effective control of the ship motion of sway under unfavorable loads.
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Length of Island Berth in Open Water Area
China Harbour Engineering, 2007Co-Authors: Cai Chang-siAbstract:This paper illustrates great disparity among Chinese Technical Code and OCIMF's Mooring Equipment Guidelines and BS 6349 Maritime Structures,dealing with calculations for the length of island berth,and briefly introduces application of Optimoor in China.
Jorge Carlos Ferreira Jorge - One of the best experts on this subject based on the ideXlab platform.
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Mechanical and microstructural properties of submerged arc weldments with high heat input
Welding International, 2017Co-Authors: Jorge Carlos Ferreira Jorge, Luís Felipe Guimarães De Souza, Erick De Souza Marouco, Olavo Ribeiro Dos Santos Filho, Jorge Luiz Coutinho DinizAbstract:AbstractThe purpose of this work is to present a study of the mechanical and microstructural properties of welded joints in carbon steel obtained by the automated submerged arc process with high heat input, with the aim of increasing productivity in the fabrication of pipes for Mooring Equipment. Joints were welded in ASTM A-572 Gr.50 steel with thickness of 25 mm by the single-pass submerged arc process, with heat input varying from 7.8 to 14.0 kJ/mm. The joints were assessed by Charpy-V impact testing at a temperature of 0 °C, Vickers microhardness with 1-kgf load, and metallography of test specimens taken from the weld metal and the heat-affected zone. The results showed that the welded joints had impact toughness above the minima required for use in the welding of C-Mn and low-alloy steels with impact requirements of 34 J at 0 °C. A significant increase in productivity was observed, without impairing the mechanical properties, allowing fabrication of pipes for oil Equipment with a significant reductio...
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Effect of post-welding heat treatment on the mechanical and microstructural properties of extra high-strength steel weld metals, for application on Mooring Equipment
Welding International, 2014Co-Authors: Jorge Carlos Ferreira Jorge, Sergio Maciel Faragasso, Luís Felipe Guimarães De Souza, Ivani De Souza BottAbstract:Evaluation was performed of a weld metal with tensile strength higher than 860 MPa for welding R4 grade steel of standard W22 of the International Association of Classification Societies, Ltd. Multipass joints were welded with preheating at 200 and 250°C, using the coated electrode process with a 4.0-mm-diameter consumable, the basic composition of which was: C – 0.06%, Mn – 1.89% and Ni – 2.95%. After welding, mechanical and metallographic tests were performed on samples entirely removed from the metal deposited in conditions as-welded and after post-weld heat treatment performed at 600°C for 2 h. The results show that the weld metals obtained have mechanical properties suitable for all conditions of analysis, providing properties superior to the minimum required for welding R4 grade steel used on petroleum platform Mooring Equipment. The metallographic analysis enabled identification of the microstructure and explanation of the behaviour of the mechanical properties after post-weld heat treatment.
Kenji Sasa - One of the best experts on this subject based on the ideXlab platform.
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BASIC RESEARCH ON THE PLANNING AND THE OPERATION OF Mooring Equipment AT CONTAINER TERMINALS THAT FACES THE OPEN SEA
PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN, 1999Co-Authors: Satoru Shiraishi, Kenji SasaAbstract:Moored ship motions due to long period waves become the serious problem, those phenomenon are happened in harbors which faces the open sea. Container terminals have been built in harbors at inside bay by now, however, some container terminals are planned and built in a harbor which faces the open sea area because of container carriers of larger sizes. Container carriers have more serious limit values of cargo handling than bulk carriers, tankers, etc. In this study, firstly, we research about the operation situation of container terminals which are working now and operational plans of new container terminals that which faces the open sea. Secondly, we examine about the design of Mooring Equipment of container terminals by using numerical simulations of moored ship motions considering long period waves, swells and winds. At last, we consider about the facility design of container terminals which faces open sea in the future.
Luís Felipe Guimarães De Souza - One of the best experts on this subject based on the ideXlab platform.
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Mechanical and microstructural properties of submerged arc weldments with high heat input
Welding International, 2017Co-Authors: Jorge Carlos Ferreira Jorge, Luís Felipe Guimarães De Souza, Erick De Souza Marouco, Olavo Ribeiro Dos Santos Filho, Jorge Luiz Coutinho DinizAbstract:AbstractThe purpose of this work is to present a study of the mechanical and microstructural properties of welded joints in carbon steel obtained by the automated submerged arc process with high heat input, with the aim of increasing productivity in the fabrication of pipes for Mooring Equipment. Joints were welded in ASTM A-572 Gr.50 steel with thickness of 25 mm by the single-pass submerged arc process, with heat input varying from 7.8 to 14.0 kJ/mm. The joints were assessed by Charpy-V impact testing at a temperature of 0 °C, Vickers microhardness with 1-kgf load, and metallography of test specimens taken from the weld metal and the heat-affected zone. The results showed that the welded joints had impact toughness above the minima required for use in the welding of C-Mn and low-alloy steels with impact requirements of 34 J at 0 °C. A significant increase in productivity was observed, without impairing the mechanical properties, allowing fabrication of pipes for oil Equipment with a significant reductio...
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Effect of post-welding heat treatment on the mechanical and microstructural properties of extra high-strength steel weld metals, for application on Mooring Equipment
Welding International, 2014Co-Authors: Jorge Carlos Ferreira Jorge, Sergio Maciel Faragasso, Luís Felipe Guimarães De Souza, Ivani De Souza BottAbstract:Evaluation was performed of a weld metal with tensile strength higher than 860 MPa for welding R4 grade steel of standard W22 of the International Association of Classification Societies, Ltd. Multipass joints were welded with preheating at 200 and 250°C, using the coated electrode process with a 4.0-mm-diameter consumable, the basic composition of which was: C – 0.06%, Mn – 1.89% and Ni – 2.95%. After welding, mechanical and metallographic tests were performed on samples entirely removed from the metal deposited in conditions as-welded and after post-weld heat treatment performed at 600°C for 2 h. The results show that the weld metals obtained have mechanical properties suitable for all conditions of analysis, providing properties superior to the minimum required for welding R4 grade steel used on petroleum platform Mooring Equipment. The metallographic analysis enabled identification of the microstructure and explanation of the behaviour of the mechanical properties after post-weld heat treatment.
Ivani De Souza Bott - One of the best experts on this subject based on the ideXlab platform.
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Effect of post-welding heat treatment on the mechanical and microstructural properties of extra high-strength steel weld metals, for application on Mooring Equipment
Welding International, 2014Co-Authors: Jorge Carlos Ferreira Jorge, Sergio Maciel Faragasso, Luís Felipe Guimarães De Souza, Ivani De Souza BottAbstract:Evaluation was performed of a weld metal with tensile strength higher than 860 MPa for welding R4 grade steel of standard W22 of the International Association of Classification Societies, Ltd. Multipass joints were welded with preheating at 200 and 250°C, using the coated electrode process with a 4.0-mm-diameter consumable, the basic composition of which was: C – 0.06%, Mn – 1.89% and Ni – 2.95%. After welding, mechanical and metallographic tests were performed on samples entirely removed from the metal deposited in conditions as-welded and after post-weld heat treatment performed at 600°C for 2 h. The results show that the weld metals obtained have mechanical properties suitable for all conditions of analysis, providing properties superior to the minimum required for welding R4 grade steel used on petroleum platform Mooring Equipment. The metallographic analysis enabled identification of the microstructure and explanation of the behaviour of the mechanical properties after post-weld heat treatment.