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남동희,홍영준,정해용,배차현,김인배 ( D . H . Nam,Y . J . Hong,H . Y . Jeong,C . H . Bae,I . B . Kim ) 한국열처리공학회 1991 熱處理工學會誌 Vol.4 No.2
Effects of aging treatment on the microstructures and microhardness of a rapidly solidified Al-Li-Cu-Mg-Zr alloy were investigated by differential scanning calorimetry (DSC) and transmission electron microscopy(TEM). The as-melt-spun ribbon was consisted of fine δ` and icosahedral intermetallic compound which were precipitated in the matrix. Two exothermic peaks with the range of 120℃-190℃ and 280℃-344℃ corresponded to δ` and θ`, S`, T₁precipitating reaction respectively, and two endothermic peaks with the range of 190℃-280℃ and 344℃-550℃ corresponded to dissolution of δ` and θ`, S`. T₁respectively in DSC curves. Peak hardness value was obtained at 210℃ for 1 hr aging treatment.
레이저 스캐닝과 영상맵핑을 이용한 암거 구조물 안정성평가
이병주 ( Lee Byeong Ju ),김인배 ( Kim In Bae ),도종남 ( Do Jong Nam ),민근형 ( Min Keun Hyeong ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
The internal displacement of the corrugated steel plate structure reduces structural stability. In this study, we developed a smart checking system to evaluate the stability of the corrugated steel plate culvert structure by laser scanning and image mapping. It is expected that output data can be used in inspecting deformation rates between designs and measured 3D shapes. Also, it can solve the problems in current visual inspection and systemize the inspection tasks scientifically.
이병주 ( Lee Byeong Ju ),김인배 ( Kim In Bae ),도종남 ( Do Jong Nam ),민근형 ( Min Keun Hyeong ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.1
The internal displacement of the corrugated steel plate structure reduces structural stability. In this study, we evaluated the stability of the corrugated steel plate culvert structure using an inspecting deformation rates between designs and measured 3D shapes. Also, a proper repair and reinforcement method will be proposed through analytical and experimental verification.