• KOREAN POULTRY JOURNAL
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• v.54 no.8
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• pp.134-137
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• 2022

• Journal of the Korean Institute of Intelligent Systems
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• v.12 no.2
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• pp.103-108
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• 2002

Manufacturing the complex surface plates in Stern and Stem is major factor in computing the processing cost of a ship. If these parts are effectively classified, it helps to compute the processing cost and find the way of cut-down on the processing costs. This study is intended to effectively classify surface plates. To solve this problem, we apply Pattern Classification of Neural-Networks.

• Journal of Ocean Engineering and Technology
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• v.17 no.1
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• pp.72-79
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• 2003

This paper deals with the development of an interface program for automatic plate forming, which can exchange information between the heating line information generation program and the automatic heating apparatus. In this paper, the performance of the developed interface program has been verified from the view point of numerical position control. By applying the interface program to the operation of the automatic heating apparatus, an experiment of line heating has been conducted for several steel plate models. Based on the experimental results, a simplified relation to estimate angular distortion has keen derived as a natural characteristic of the present automatic heating apparatus. As a result of the present study, the prototype of the automatic plate forming system has been constructed, and its application to the real surface models found in the ship will be presented in the near future.

• Proceedings of the KWS Conference
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• 2008.05a
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• pp.27-27
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• 2008

• Journal of the Society of Naval Architects of Korea
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• v.52 no.5
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• pp.365-371
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• 2015

Hull plate consists of various types of curved plates and there also exists corresponding processing methods. Typically, curved plates can be divided into convex type and saddle type. Large amount of research has been conducted mainly focusing on application of processing method of convex type, saddle type and hybrid type, but research on determination and processing method application of the most difficult S-shaped curved plate that has inflection lines has not been carried out yet. In this paper, as the fundamental research of appropriate processing method application, a calculation method is proposed to calculate inflection lines on curved plates. In order to calculate inflection lines, normal curvature and information of fabricated curved plates should be utilized. We compare the workability of the fabrication for hull plate using inflection line.

• Journal of Ocean Engineering and Technology
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• v.13 no.1 s.31
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• pp.79-87
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• 1999

As it is well appreciated plate forming by line heating takes an important role in ship production process. The paper deals with the development of line heating simulator which can produce the resultant deformation due to line heating in a few minute adn with which user can see the result graphically. For the present purpose mechanical modelling is adopted which can explicitly represent the physical resultant of line heating. In developing the present line heating simulator several program modules are integrated by adopting GUI concept such that the simulator can produce resultant deformation with keeping high accuracy. Application example is illustrated for the twisted shape surface which can be frequently seen in ship and offshore structures.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2002.10a
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• pp.318-322
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• 2002

In this paper the automatic plate forming system developed by the present research group is introduced, which would be helpful for other researchers. The present system consists of three parts : heating line information generation software, automatic heating apparatus and numerical control system. The numerical control system developed by the present authors is detailed. Performance test for the developed system has been carried out and good results has been obtained. As an extension of the present study, the present automatic plate fanning system will be applied to surfaces found in ship and offshore structure.

• Bulletin of the Society of Naval Architects of Korea
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• v.52 no.3
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• pp.52-60
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• 2015

• Journal of the Society of Naval Architects of Korea
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• v.36 no.4
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• pp.116-127
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• 1999

Line heating is a method widely used in forming ship hull surface. From the viewpoint of mechanics it is large deformation thermal elasto-plastic problem of arbitrary shaped plate. Many researches have been carried out to resolve this problem. Especially, Jang et al.[1] proposed a simplified thermal elasto-plastic analysis method to predict effectively the deformation of plate due to line heating. In this paper, we improved the method of Jang et al.[1] by considering tension yielding in temperature decreasing stage and verified with experimental results. FEA program using MITC4 degenerated shell element was made to deal with elastic large deformation problem. The newly proposed method can be used in the simulation and control of forming hull surface for higher productivity with simplicity and efficiency.

• KOREAN POULTRY JOURNAL
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• v.44 no.1
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• pp.94-95
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• 2012

최근 사료원료가격 상승에 따른 고곡가로 농가들이 어려움을 겪어오고 있다. 그 와중에도 국내 사료를 대표하는 농협사료는 사료가격의 견제 역할을 하며, 최대한 농가를 대변하기 위한 노력을 기울여 왔고, 금년 국내 배합사료업계 최초로 300만톤 달성이라는 업적을 남겼다. 본고는 지난 2011년 농협사료에 취임하여 1년을 맞이한 오세관 대표이사를 만나 농협사료의 역할 및 향후 계획을 들어 보았다.