The Experts below are selected from a list of 375 Experts worldwide ranked by ideXlab platform
Yuuji Funatsu - One of the best experts on this subject based on the ideXlab platform.
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improvement of arrestability for brittle crack for welded joint development of higher toughness yp47 460n mm2 class Steel plate for large container ships 3
The Twenty-first International Offshore and Polar Engineering Conference, 2011Co-Authors: Jun Otani, Takehiro Inoue, Yuuji Funatsu, Hirouki ShirahataAbstract:Recently, the amount of handling of the sea container increases rapidly by rapid economic growth in the east Asian nations including China. Therefore, needs of the enlargement of the container ship have risen in the shipping company's trying to decrease the cost of transportation, to suppress the fare, and the ship's trying to load with a lot of containers. Therefore, thickness of Steels is becoming. So, the weight of the hull is increasingly and the welding operation is becoming difficult. To reduce these problems, Nippon Steel developed YP47 Steel which is high tensile force more than conventional YP40 Steel and applied it to actual ship. Double integrity is the main concept to develop YP47 Steel. One is the quality which is hard to initiate brittle crack, and the other is prevention brittle crack spread even if brittle crack occurred (arrestability). This concept is the one generally applied in the tank field, and we applied to new development Steel. This arrestability had been researched by the industry-university cooperation up to now, and the conclusion that the crack that occurred in the welding was highly the possibility of missing to the parent material by the influence such as the residual stresses and arrested. However, that the Steel plate to be investigated is YP36 Steel plate and plate thickness by thinness with about 35mm in high tensile Steel. So, it is not investigated in high tensile Steel and 40mm thickness and over like YP47 Steel. In one side, even if the welding characteristic demand value of the classification is satisfied, the crack also has the result in which without stopping and going straight in the high tensile Steel plate of the thickness 50mm or more in the recent research. This paper refers in detail about the arrestability which is one of "double integrity" put up as a development objective.
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development of higher toughness yp47 460n mm2 class Steel plate for large container ships
20th International Offshore and Polar Engineering Conference ISOPE-2010, 2010Co-Authors: Yuuji Funatsu, Jun Otani, Kazuhiro Hirota, Toshiyuki Matsumoto, Hiroshi YajimaAbstract:An increase in the size of container ships has led to an increase in the thickness of Steel materials used, thus causing problems such as making welding work difficult as well as increasing hull weight. In order to alleviate these problems, Nippon Steel Corporation has developed YP47 class Steel plates instead of conventional YP40 class Steel plates in cooperation with Mitsubishi Heavy Industries, Ltd. and ClassNK, which were then applied to actual ships. Double integrity for safety was the concept established as a development goal. That is, the goal is to put Steel plates into practical application which are hard to initiate brittle cracks, and are capable of arresting brittle cracks even in the event of brittle crack occurrence. YP47Steel plates have been manufactured on the basis of TMCP utilizing a variety of technologies; for example the technology for dispersing fine oxidation products into Steel for enhancing weld toughness, and the technology for rolling in short time period at low temperature for enhancing arrestability. Large-size container ships, which use or are scheduled to use YP47Steel plate, amount to approximately 50 vessels since the delivery in 2006.
Jun Otani - One of the best experts on this subject based on the ideXlab platform.
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improvement of arrestability for brittle crack for welded joint development of higher toughness yp47 460n mm2 class Steel plate for large container ships 3
The Twenty-first International Offshore and Polar Engineering Conference, 2011Co-Authors: Jun Otani, Takehiro Inoue, Yuuji Funatsu, Hirouki ShirahataAbstract:Recently, the amount of handling of the sea container increases rapidly by rapid economic growth in the east Asian nations including China. Therefore, needs of the enlargement of the container ship have risen in the shipping company's trying to decrease the cost of transportation, to suppress the fare, and the ship's trying to load with a lot of containers. Therefore, thickness of Steels is becoming. So, the weight of the hull is increasingly and the welding operation is becoming difficult. To reduce these problems, Nippon Steel developed YP47 Steel which is high tensile force more than conventional YP40 Steel and applied it to actual ship. Double integrity is the main concept to develop YP47 Steel. One is the quality which is hard to initiate brittle crack, and the other is prevention brittle crack spread even if brittle crack occurred (arrestability). This concept is the one generally applied in the tank field, and we applied to new development Steel. This arrestability had been researched by the industry-university cooperation up to now, and the conclusion that the crack that occurred in the welding was highly the possibility of missing to the parent material by the influence such as the residual stresses and arrested. However, that the Steel plate to be investigated is YP36 Steel plate and plate thickness by thinness with about 35mm in high tensile Steel. So, it is not investigated in high tensile Steel and 40mm thickness and over like YP47 Steel. In one side, even if the welding characteristic demand value of the classification is satisfied, the crack also has the result in which without stopping and going straight in the high tensile Steel plate of the thickness 50mm or more in the recent research. This paper refers in detail about the arrestability which is one of "double integrity" put up as a development objective.
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development of higher toughness yp47 460n mm2 class Steel plate for large container ships
20th International Offshore and Polar Engineering Conference ISOPE-2010, 2010Co-Authors: Yuuji Funatsu, Jun Otani, Kazuhiro Hirota, Toshiyuki Matsumoto, Hiroshi YajimaAbstract:An increase in the size of container ships has led to an increase in the thickness of Steel materials used, thus causing problems such as making welding work difficult as well as increasing hull weight. In order to alleviate these problems, Nippon Steel Corporation has developed YP47 class Steel plates instead of conventional YP40 class Steel plates in cooperation with Mitsubishi Heavy Industries, Ltd. and ClassNK, which were then applied to actual ships. Double integrity for safety was the concept established as a development goal. That is, the goal is to put Steel plates into practical application which are hard to initiate brittle cracks, and are capable of arresting brittle cracks even in the event of brittle crack occurrence. YP47Steel plates have been manufactured on the basis of TMCP utilizing a variety of technologies; for example the technology for dispersing fine oxidation products into Steel for enhancing weld toughness, and the technology for rolling in short time period at low temperature for enhancing arrestability. Large-size container ships, which use or are scheduled to use YP47Steel plate, amount to approximately 50 vessels since the delivery in 2006.
Hiroshi Yajima - One of the best experts on this subject based on the ideXlab platform.
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development of higher toughness yp47 460n mm2 class Steel plate for large container ships
20th International Offshore and Polar Engineering Conference ISOPE-2010, 2010Co-Authors: Yuuji Funatsu, Jun Otani, Kazuhiro Hirota, Toshiyuki Matsumoto, Hiroshi YajimaAbstract:An increase in the size of container ships has led to an increase in the thickness of Steel materials used, thus causing problems such as making welding work difficult as well as increasing hull weight. In order to alleviate these problems, Nippon Steel Corporation has developed YP47 class Steel plates instead of conventional YP40 class Steel plates in cooperation with Mitsubishi Heavy Industries, Ltd. and ClassNK, which were then applied to actual ships. Double integrity for safety was the concept established as a development goal. That is, the goal is to put Steel plates into practical application which are hard to initiate brittle cracks, and are capable of arresting brittle cracks even in the event of brittle crack occurrence. YP47Steel plates have been manufactured on the basis of TMCP utilizing a variety of technologies; for example the technology for dispersing fine oxidation products into Steel for enhancing weld toughness, and the technology for rolling in short time period at low temperature for enhancing arrestability. Large-size container ships, which use or are scheduled to use YP47Steel plate, amount to approximately 50 vessels since the delivery in 2006.
T. Miyake - One of the best experts on this subject based on the ideXlab platform.
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management of corporate innovation a case study from the Nippon Steel corporation
Creativity and Innovation Management, 1992Co-Authors: B. Bowonder, T. MiyakeAbstract:Managing innovation in Japanese corporations has received considerable international attention. The case example reports the diversification of Nippon Steel Corporation, which is the largest Steel manufacturing firm in the world; into electronics; information technology; biotechnology; new materials; and high-tech oriented services, using documents provided by the organization. The case reveals an important example of managing innovation in the emerging era of global technological competition.
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Creating and sustaining competitiveness: Information management strategies of Nippon Steel Corporation
International Journal of Information Management, 1992Co-Authors: B. Bowonder, T. MiyakeAbstract:This paper analyses the process of creating and sustaining competitiveness through information management by Nippon Steel Corporation of Japan. A framework linking information management and the process of sustaining competitiveness is presented. Nippon Steel Corporation has used a combination of information management strategies for sustaining and creating competitiveness. The success of information management strategy of Nippon Steel Corporation is due to (a) intensive scanning for new information; (b) identifying new business opportunities using IT; (c) rapid information assimilation through organizational learning; (d) information fusion for generating new innovations; (e) intensive use of information through learning by doing and learning by using; (f) building competence for achieving new business through tie-ups and rapid commercial utilization of already available technologies; and (h) highly forward-looking and intensive information management strategy at the firm level.
Y Koike - One of the best experts on this subject based on the ideXlab platform.
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cases of developing of strategic information systems at Nippon Steel corporation
Hawaii International Conference on System Sciences, 1991Co-Authors: N Miyazawa, Y KoikeAbstract:Describes cases of developing strategic systems such as the Company-Wide Sales & Production Control System, the Company-Wide Comprehensive Production Technology Control System, and the Nippon Steel In-House Information & Communication System, which played an important role in overcoming the difficulties occurred by the oil crises of 1973 and 1978 and the sudden appreciation of the yen in the wake of the Plaza Agreement of 1985, and achieving a great improvement in the management structure of Nippon Steel Corporation. >