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Precast Concrete 품질관리를 위한 검사 관리 시스템 개발 및 검증
문재상(Moon, Jae Sang),서원석(Seo, Wonseok),김진영(Kim, Jinyoung) 대한건축학회 2024 대한건축학회논문집 Vol.40 No.2
The precast concrete (PC) method involves manufacturing components at the factory and assembling them on-site. Effective application of the PC method requires proper quality management of manufactured PC components. Currently, many PC factories conduct inspections on selected PC components and generate paper-based inspection reports due to time and cost constraints. To enhance both the quality and quantity of inspections without increasing time, this study proposed a quality control system that automatically records data and generates inspection reports for PC components. The system includes recording inspection results based on component specifications, storing comprehensive inspection data, and automatically constructing digital inspection reports. The developed system was tested in a PC factory to validate its efficiency. Additionally, a survey was conducted to enhance the systems usability in the field, and the system was updated based on the survey findings.
양병문(Byong-Moon Yang),장우진(Woojin Jang),차재상(Jae-Sang Cha) 한국조명·전기설비학회 2015 조명·전기설비학회논문지 Vol.29 No.1
Due to the declining LED price and environment-friendly energy policies, CO2 emission reduction and energy-saving, the LED lighting industry is accelerating rapidly. In particular, the needs for LED lamp, replacing the existing fluorescent lamp without exchange luminaire or driver circuits, are also rapidly increasing. Therefore, replacement for T8 fluorescent lamp, LED T8 lamp was developed and standardized. However, except LED T8 lamps, other lamps’ regulations or standards were not enacted. Also, the stability of fluorescent lamp substitutable LED lamp is low due to the difference in electrical characteristics and mismatch between the existing fluorescent lamp ballast and LED lamp. Therefore, many are struggling while developing fluorescent lamp substitutable LED lamp. In this paper describes the properties of existing fluorescent lamp ballasts and the considerations while developing fluorescent lamp substitutable LED lamp : demonstrating its validity by experiments the developed fluorescent lamp substitutable LED lamp prototype.