• 산업경영시스템학회지
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• 제41권1호
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• pp.59-69
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• 2018

The up-to-date business environment for Korean manufacturers is very complex and rapidly changing. Especially, the companies have faced with various changes derived from small quantity batch production, diversification of customer demands, and short life cycles of products. Consequently, the Korean manufacturing companies are in need of more efficient production planning and scheduling techniques. In this paper, the research trend of scheduling techniques is investigated to provide relevant information to researchers in this field. Furthermore, some implications for future researches are presented regarding literatures published in Korea over the last 10 years. This paper presents an entire investigation into Korean research works on scheduling (2,569 papers) that are published from 2007 to 2016. Especially, detailed analysis was carried out in the following three industry : 1) semiconductor, 2) shipbuilding and 3) automobile. In this paper, approaches to scheduling presented in the literature are categorized into the following three categories : 1) application, 2) algorithm, and 3) simulation modeling. First, in the semiconductor industry, scheduling techniques related to semiconductor cleaning processes, photolithography processes, chemical processes, transport and transport equipment have been found to be dominant. Second, the shipbuilding industry is focused on assembly processes, transporter, crane and various existing production management system. On the other hand, the scheduling research of the automobile industry is mainly focused on the vehicle movement routing and procurement supply-chain planning algorithm in terms of logistics. The conclusion of this study are expected to provide many implications for various types of academic and practical follow-up studies related to scheduling in consideration of main characteristics of semiconductor, shipbuilding and automobile industries.

• Journal of Welding and Joining
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• 제14권2호
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• pp.96-105
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• 1996

Robot systems are widely utilized in the shipbuilding industry to enhance the productivity by automating the welding process. In order to increase productivity, it is necessary to reduce the time used for robot teaching. In this work, the automatic teaching system is developed for the subassembly process in the shipbuilding industry. A alser/vision sensor is designed to detect the weld seam and the image of the fillet joint is processed using the arm method. Positions of weld seams defined in the CAD database are transformed into the robot coordinate, and the dynamic programming technique is applied to find the sub-optimum weld path. Experiments are carried out to verify the system performance. The results show that the proposed automatic teaching system performs successfully and can be applied to the robot system in the subassembly process.

• 산업공학
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• 제14권4호
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• pp.394-402
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• 2001

In this study, we deal a spatial scheduling system for the block painting process in the shipbuilding industry. In general, the spatial scheduling for the block painting process is a very complicated task. Because spatial allocation of each block in blasting and painting cells is considered simultaneously. Thus the spatial scheduling for the block painting process is the problem of planning and control of operation, which arises in shipyard. This system is developed for blocks to meet the delivery date given by the shipyard production planning system, to maximize space utilization of blasting and painting cells and to balance workload among working teams. And it has been tested using actual scheduling data from a shipyard and successfully applied in a paint shop in a shipbuilding company.

• 대한지리학회지
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• 제39권1호
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• pp.116-131
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• 2004

본 연구의 목적은 조선산업 하청구조의 공간 특성을 고찰하는 것이다. 오늘날 기업은 다른 기업과 연관된 생산시스템을 통하여 기업의 목표를 달성해 나간다. 복잡하고 거대한 플랜트를 건조하는 조선산업의 하청구조는 모기업과의 거래관계를 규정하는 공간적 요인에 따라 상이한 특성을 보이고 있다. 우선 모기업의 생산공정에 직접 참여하는 사내하청기업이나 사외지역의 협동화단지업체들은 분사화된 특성을 보이면서 밀접하게 연결되어 있다. 그리고 기계산업으로 특화되어 있는 창원이나 전통적으로 조선기자재산업이 발달한 부산지역 업체들은 전문화의 정도가 상대적으로 높아 하청관계가 비교적 강하게 연결되어 있다. 이에 비해 비국지적으로 분포하거나 표준화된 제품을 공급하는 하청기업들은 대부분 연결도가 낮게 나타난다. 조선산업의 성숙한 발전을 위해서는 모기업 주변의 사내ㆍ외지역에 집적하는 조선전문 하청기업들과의 집중적 협력과 함께 기술적으로 특화된 원거리 업체들과의 선택적 거래관계를 강화해야 할 것이다.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제7권6호
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• pp.221-228
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• 2018

최근 ICT 기반 고부가가치 조선해양 산업 요구의 증가로 조선해양 분야의 소프트웨어 비중과 중요성에 대한 기대가 높아지고 있다. 본 논문에서는 재사용 소프트웨어 컴포넌트 개발을 통해 조선해양 분야 소프트웨어 경쟁력을 향상시키는 것을 목적으로 수행한, 설문조사 기반의 조선해양 소프트웨어 개발 환경 분석 결과를 제시한다. 설문조사는 서로 다른 업체에 종사하는 34명의 조선해양 소프트웨어 개발자들을 대상으로 수행 하였으며, 설문 항목은 소프트웨어 개발 업체의 규모나 개발 제품의 기술 분류와 같이 조사 대상 SW 개발 업체 정보를 파악하기 위한 항목과 소프트웨어 개발이 수행되는 플랫폼, 언어, 배포 형태, 컴포넌트 개발 방해 요인, 개발 프로세스 및 품질관리 도구 사용 여부 등의 소프트웨어 개발과 직접적인 관련이 있는 항목들로 구성하였다. 설문조사 분석 결과에 따르면 개발자들이 개발환경을 선택할 때 가장 큰 영향을 미치는 요소는 이용 가능한 도구의 다양성과 기술지원 여부였으며, 성능, 제품의 가격, 보안이 그 다음 고려사항이었다. 또한 소프트웨어 경쟁력 향상을 위한 한 가지 방법인 재사용 컴포넌트의 개발을 가로막고 있는 주요한 원인은 다양한 플랫폼 지원과 신뢰성 보장의 어려움, 개발 비용과 인력 부족으로 조사되었다. 마지막으로, 개발 프로세스와 품질관리 도구를 전면적으로 사용하여 체계적으로 소프트웨어를 개발하고 있는 개발자의 비율은 전체 조사대상 개발자의 15% 정도에 불과한 것으로 조사되었다. 이러한 사실로부터 현재 조선해양 업체들의 고품질 소프트웨어 개발 능력을 향상시키기 위해서는 해당 업체들에 대한 기술적 제도적 지원이 필요한 상황임을 알 수 있었다.

• Journal of Welding and Joining
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• 제32권5호
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• pp.58-64
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• 2014

The shipbuilding industry is facing the various problems of less demand and oversupply owing to the global economic crisis and the increase in shipbuilding countries. Shipyards of the industry are making effort to strengthen their ability to handle the crisis via a smartwork technology for flexible working environment. In this study, we developed a smartwork system that manages the information in shipbuilding process with mobile devices such as smart phones and tablet PCs. To successfully apply the developed smartwork system to shipyards, we analyzed several best practices and management tasks of the shipbuilding processes. The developed system was designed by CBD approach that is a branch of service-oriented software engineering for reusability and flexibility on the system. As it is designed considering the flexible working environment, it supports to increase their productivity by reducing the time required to carry out tasks and by increasing the mobility required to manage work performance in field of shipyards.

• 한국해양공학회지
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• 제37권5호
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• pp.190-197
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• 2023

In the shipbuilding and marine industry, digital transformation activities are promoted primarily by large shipyards. However, bottlenecks are observed across value chains, and digital transformation effects are reducing because of the cost and technical challenges encountered by supplies. In this study, we proposed a win-win cooperation model for large, small, and medium-sized companies using digital transformation based on the characteristics of the shipbuilding and marine industry through case studies. We investigated the digital transformation progress in German and Korean small and medium-sized enterprises (SMEs). In addition, we identified information-sharing methods and management challenges encountered in enterprise resource planning and manufacturing execution systems in the collaboration process of pipes, panels, blocks, etc. of SMEs that are suppliers of a Korean shipyard, and clarified communication by building a platform based on a common format between shipyards and suppliers. Further, we proposed a standard model of a digital transformation system for enhancing the collaboration between large companies and suppliers and proposed a basic plan including strategies to efficiently and effectively build a digital transformation system based on the standard model.

• 한국항해항만학회지
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• 제39권2호
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• pp.125-130
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• 2015

Korea is worldwide top manufacturer of offshore plant industry, while shown weakness in high-valued offshore plant service industry (OPSI). The governmental support policies and studies for fostering programs are centered on shipbuilding and engineering sector. On the other hand, offshore logistics service sector among the programs is neither included as governmental fostering support sectors nor ever-studied. Domestic shipping and logistics companies have many experience of handling various project, heavy-lift cargo and even super blocks on shipbuilding industry. However they are faced with lack of appropriate heavy carrier and others. So for their successful entering into offshore plant logistics market, systematic preparation, studies and supporting policies are highly recommended.

• 한국의류학회지
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• 제37권2호
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• pp.235-245
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• 2013

Physiological responses and subjective sensations were evaluated for wearing protective welding clothing in consideration of the work environment for the shipbuilding industry. Experimental clothing was made of oxidant carbon nonwoven fabric (SW2) and oxidant carbon/p-aramid blended fabric (SW4). The values of all items in physiological responses were higher upon wearing oxidant carbon experimental clothing versus wearing oxidant carbon/p-aramid experimental clothing (p<.001). The results of the wearing evaluation in the welding work on-site showed that existing leather protective clothing had a very low satisfaction of permeability, weight sensation and wearing sensation. For the wearing sensation of experimental clothing with SW2, permeability and durability were poor and the pressure and weight sensation satisfaction was very high. In case of SW4, the satisfaction was very high in functional movement, pressure, weight sensation and management aspects; subsequently, the overall wearing satisfaction was very good.

• 한국안전학회지
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• 제22권3호
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• pp.81-87
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• 2007

In this study digital human models of ship construction tasks using modeling & simulation were constructed and human models' activities through human activity analysis were evaluated. Human Factors experts analyzed the actual workers' tasks using the same technique used in human activity analysis at the same time. The main objective of this study is to check a possibility of applying digital human modeling technique to ship construction tasks that are mostly non-standardized(not uniformed) whereas most applications of digital human modeling technique have been applied to standardized tasks. We evaluated postures of both real workers and digital humans by RULA. It turned out that the final scores of RULA evaluation on real workers are the same as the RULA scores for digital humans. However, there were differences of RULA detail scores between real workers and digital humans in the several processes related with the wrist twist and deviations. Those differences are considered to be resulted from the error in the on-site measuring worker's body dimension which could be reduced by accurate tools to correct data for body dimension and digital real drawings for facilities. The results showed possibility of application of digital human modeling and ergonomic analysis on informal work operations as well as formal operations in the shipbuilding industry.