• 한국기계가공학회지
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• 제18권8호
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• pp.67-73
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• 2019

An ultra-high pressure treatment device is a device used for increasing the shelf life of food by sterilizing it by applying hydrostatic pressure to solid or liquid food. The ultrahigh pressure treatment system developed in this study is a pressure vessel with a processing capacity of 100 L and a maximum pressure of 700 MPa. Pressure vessels for ultrahigh-pressure processing equipment are manufactured using wire-winding techniques. The design formula for making ultra-high pressure vessels with wire windings is given in ASME Section VIII - Division 3. In this study, the ratio of the cylinder to the winding area that can be applied in a wire-winding application was analyzed using a finite element analysis. Furthermore, the relationship between the variation of the residual stress in the vessel and the ratio of the winding area due to the variation of the winding tension was analyzed, and a design guide applicable to the actual product design was developed. Finally, the design equation was modified by presenting the coefficients to correct the difference between the finite element analysis and the design equation.

• 한국정보통신학회논문지
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• 제22권12호
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• pp.1577-1588
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• 2018

최근, 선박에 탑재된 장비로부터 수집되는 정보를 분석하여 운항 및 유지보수 지원 목적으로 활용하기 위한 여러 연구가 진행되고 있다. 항해통신장비의 인터페이스의 경우 상대적으로 표준화가 잘 이루어져 있으나 선박 기관부 및 기타 장비부의 인터페이스는 여러 이유로 인해 표준화가 되어있지 않아 데이터 교환 및 관리에 많은 한계가 존재한다. 이러한 문제를 극복하기 위한 목적으로 해상 필드 데이터 공유를 위한 선박 데이터 서버에 관한 표준인 ISO 19847과 선박 기계 장비부 데이터 표준인 ISO 19848이 현재 제정 막바지 단계로 최근 공표를 앞두고 있다. 본 논문에서는 이러한 두 가지 국제표준의 DIS 버전을 기반으로 선박 기관부 데이터 관리 플랫폼을 개발하고, 이를 기반으로 필드 데이터 교환에 관한 실험을 수행하는 것에 관한 내용을 다룬다. 이를 위해서 관련연구 및 ISO 19847/19848의 요구사항을 분석하고, 요구사항을 충족하는 선박 데이터 플랫폼 아키텍처를 설계하며, 각 구성요소를 개발하여 유용성을 검증한다.

• 한국해양공학회지
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• 제26권5호
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• pp.63-72
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• 2012

The product lifecycle of a marine vessel can be classified into the design-production, operation-maintenance, and disposal phases. During the operation and maintenance phase, status data should be gathered from the major machinery and instruments installed on the marine vessel in order to perform efficient maintenance work. Although a PLM (product lifecycle management) system can manage the product information during the design and assembly stage, a PLM based on asset management technology is more appropriate for product information management during the operation stage. Product embedded information devices (PEIDs) are suggested for gathering real-time maintenance information during the operation and maintenance lifecycle. A PEID allows PLM to provide the capability of offering active information exchange between the lifecycle management system and equipment. This study designed a PEID to effectively obtain information and interact with a PLM system. It consists of sensors, wireless communication, and a micro-processor, which allow it to accumulate status data on the PLM system. The embedded information device and PLM enable the seamless information flow, tracking, and updating of MRO (maintenance repair and overhaul) information for a product throughout the middle of the product lifecycle.