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박태훈,Park Tae-Hoon 한국국방경영분석학회 1979 한국국방경영분석학회지 Vol.5 No.2
In military applications of equipment, it is of the utmost importance that the equipment operates without breakdown for a specified length of time. We can increase the reliability of a system by adding redundant components to the basic nonredundant system. This study introduces a dynamic programming algorithm of finding optimum redundant design that maximizes the system reliability with constraints.
Layerwise 이론을 이용한 전단변형이 고려된 복합재료보의 유한요소해석
박태훈 ( Park Tae-hoon ),조창근 ( Cho Chang-gun ),박문호 ( Park Moon-ho ),권민호 ( Kwon Min-ho ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.2
This study developed Finite Element Model using Nonlinear Layerwise Theory which can recognize failure mode like state of stress of laminated composite beam which has different material properties , the fiber failure of laminated composite structure, matrix failure and delamination. This study show good agreement between the Finite Element Model using Nonlinear Layerwise Theory and the three-dimensional elasticity solution. The classical plate theory fails to accurately determine the stress and displacement variation through the thickness, both qualitatively and quantitatively. Note that both the thress-dimensional elasticity theory and Finite Element Model using Nonlinear Layerwise Theory assume that the load is applied at the top surface of the top ply. this gives rise to an unsymmetrical stress distribution through the thickness, as expected. In the conventional beams theorise, however, the load can be applied at the mid-plane only, thereby resulting in equal but opposite stresses at the top and bottom of the beam. Finally, the study identifies the particular types of problems where the layerwise elements possess a clear advantage and superiority over the conventional equivalent single-layer models.
박태훈(Park Tae-Hoon),유기성(Yoo Ki-Seong),유원용(Ryu Won-Yong),김영욱(Kim Young-Wook),이양구(Lee Yang-Gu),공창빈(Kong Chang-Bin),이상호(Lee Sang-Ho),김태영(Kim Tae-Young) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.3
This research examines whether difference that is some in inclination of combat sports player's sportsmanship is, and accordingly is purposeful to clear relation. combat sports (fencing, Taekwondo, boxing, induction, wrestling, wrestling) player who research target is having player life in middle·high·an university 399 people be . Used Korean-made measure (KMSOS) that Seong-changhun (2003) verifies changing based on Vallerand MSOS by a tool to measure sportsmanship of players. Data processing used SPSS 12.0 programs. Did reliability analysis that use Cronbach'a coefficient to verify believability of an irradiation tool, Difference of sportsmanship used t-test, one-way ANOVA. In this research, drew following conclusion. First, man appeared higher level than woman in wave and human desire, decision respect, and woman appeared higher level than man in victory or defeat excessive fondness. Second, exercise immersion, decision respect, victory or defeat excessive fondness appeared level that minority is taller than majority. Third, in exercise immersion high school player decision respect appear, and tendency of level that middle school playing the first stone is high in victory or defeat excessive fondness appeared. Fourth, striking radical type of player appeared higher level than Geuraepeulring type of player in companion respect factor. Fifth, player less than exercise career 4 years appeared higher level than player less than 7 years and player more than 7 years for victory or defeat excessive fondness factor. Sixth, Taekwondo for best and companion respect factor, high level appeared to boxing item players.
Micro-CT 스캐닝을 통한 섬유보강 콘크리트 기둥내부 강섬유의 배향성 및 위치분포 분석
박태훈 ( Park Tae-hoon ),서형원 ( Suh Heong-won ),배성철 ( Bae Sung-chul ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.1
In this study, analysis of steel fiber orientation and distribution inside fiber reinforced concrete was performed using micro―CT scanning technology. Samples were extracted from the column according to its height and distance from the mold. Samples were scanned in order to attain the image of steel fibers then region of interest were obtained by binarization process. By calculating the principle moment of inertia of each fiber, direction vector, scale, center postion, volume, and surface area were gained in order to analyze the orientation and distribution. Most of the fibers inside the column tended to be perpendicular to the main axis of the column. Moreover, most of the fibers appeared at the bottom of the column and at the position where it is farthest from the mold.