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문수,최석순,문일,Moom, Soo,Choi, Seog-Soon,Moon, Il 대한치과기공학회 2002 대한치과기공학회지 Vol.23 No.2
This test is to conduct applied research the reaction area of the Ti-cast metal body which is made use of Dental Phosphate-silica alumina bonded investment material selling at a market, and the cooling method is how to effect on the acicular. The experimentation is as followings, 1. Experimental specimens After invest with Dental Phosphate-silica alumina bonded investment material, the $10{\times}10{\times}1.0mm^3$ wax pattern was casted by Dental high vacuum argon centrifugal casting machine. 2. Test We can analyze SEM/EDS, XRD utilize the fractography(an optical microscope). 3. Conclusion The pure cast metal body constituted of reaction products layer, stability layer and contamination layer. This pure cast have no connection with the cooling condition. The pure Titanium shows difference in a component distribution according to the cooling condition. Through this experimentation we can establish that acicular in the pure Ti-cast metal is consist of Hexagonal structure a=2.9505$\AA$, c=4.6826$\AA$.
원전 격납건물 라이너 플레이트 두께 비접촉 정밀 측정 센서 연구
한순우(Soon-Woo Han),조승현(Seung-Hyun Cho),박찬일(Chan-Il Park),강토(To Kang),문성인(Sung-In Moon) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
A noncontact thickness measurement sensor for NPP (Nuclear Power Plant) containment liner plates (CLP) is proposed in this work. Corrosion of CLP backwall has occasionally been reported in NPPs and detection of wall-thinned section is important for NPP safety. Inspection of CLP thickness is carried out using contact type ultrasonic thickness measurement and takes a lot of time. This work suggests an alternative CLP thickness measurement sensor based on electromagnetic acoustic transducer (EMAT). The proposed sensor can measure CLP thickness without physical contact or couplant and inspect wide area rapidly. The sensor is designed to produce and detect bulk shear waves in relatively thin plates like CLP. The prototype of the sensor was made and its working performance was checked on test specimens with various thickness. The test result showed that the proposed sensor could measure thickness of CLP precisely and a mobile inspection system based on the sensor can be developed.
보강된 비렌딜 트러스 보부재의 구조성능에 관한 실험적 연구
양일승(Yang, Il-Seung),문연준(Moon, Youn-Joon),박근홍(Park, Geun-Hong),김순철(Kim, Soon-Chul) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.3
A wooden truss is a structure comprising one or more triangular units constructed with straight members whose ends are connected at joints referred to as nodes. External forces and reactions to those forces are considered to act only at the nodes and result in forces in the members which are either tensile or compressive forces. Wooden truss structures can be satisfied the request of the diversity and individuality of users, the shortening of the industrialization and the construction cost savings. However, truss has defects of construction-ability. In this study, vierendeel trusses, which is a truss where the members are not triangulated but form rectangular openings, and is a frame with fixed joints that are capable of transferring and resisting bending moments, are suggested and evaluated by experiments. As a result, strengthening vierendeel trusses are show high strengths and stable structure performances.
양일승(Yang Il-Seung),문연준(Moon Youn-Joon),오영호(Oh Young-Ho),김순철(Kim Soon-Chul) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
The easy assembly joint system is required because the number of skillful carpenters is decreasing remarkably in korea. Main objective of this study is to investigate experimently the structural performances beam-column joints using the new type connecting system, which is composed of metal connector and adhesive. The metal connectors embedded into the wood with adhesive in new type connecting system. In order to improve the bond strength, threaded steel rods are used as metal connector. From this result, specimens using the suggested joints are shown stable hysteresis behaviors and can be calculated by the suggested equation.