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보강사면에서의 지오그리드의 강화 효과에 대한 수치적 해석
유세은,김성용,정유진,고은희,전한용,Yoo, Se-Eun,Kim, Seong-Young,Jeong, Yoo-Jin,Ko, Eun-Hee,Jeon, Han-Yong 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.6
In this study, the result of measurements a geogrid-reinforced slope and the simulation result using the finite element analysis program Visual FEA/Edu were compared for verifying the validity of the finite element analysis model that was used. A reinforced slope was formed as a finite element mesh and the soil and geogrids physical properties were assigned. The actual settlement of the reinforced slope and finite element analysis results from the contour image showed similar aspects. When the finite element mesh was correctly formed and the exact physical properties of the target were assigned, it was supposed that the results of analysis were reliable. By simulating the field condition before construction, we can dtermine what kind of geosynthetics are reasonable for designing and installation in the field.
유세은(Se-Eun Yoo),김수경(Su-Kyung Kim),강세구(Se-Goo Gang),이상덕(Sang-Duk Lee),전한용(Han-Yong Jeon) 한국토목섬유학회 2010 한국토목섬유학회 학술발표회 Vol.2010 No.11
In this study, the result of geogrid-reinforced slope and the simulation result using finite element analysis program Visual FEA/Edu were compared for verifying the validity of finite element analysis model. Reinforced slope was formed as a finite element mesh and physical properties of soil and geogrids were assigned. The actual settlement of the reinforced slope and finite element analysis results through contour image showed similar aspects. When finite element mesh was formed rightly and exact physical properties of target were assigned, it is supposed that the results of analysis are reliable. By simulating of field condition before construction, it would be able to get the reasonable choice of geosynthetics.
글루타민산나트륨(Mono Sodium Glutamate)을 처방한 모발 경화제가 펌에 미치는 효과
최원준ㆍ유세은(Won Joon ChoiㆍSe Eun Yoo) 한국인체미용예술학회 2016 한국인체미용예술학회지 Vol.17 No.1
This study attempted to assess the applicability of the hair-hardener considering hair elasticity and retention through analysis of changes in hair conditions after chemical treatment. For this, the following were analyzed: safety and stability of the hair-hardener, changes in hair thickness, amino acid, changes in surface color, hair surface using the SEM, changes in tensile strength, and wave efficiency by the frequency of shampooing. Then, the results found the following: The stability of the hair-hardener was confirmed because there were no changes in its physical properties and color at room temperature and constant temperature. In a clinical allergy test as well, a negative response was found in all 20 clinical trial participants, which confirms its safety. In terms of changes in hair thickness, hair was thicker in the group that used the hair hardener than in the control group. In comparison of amino acid, total amino acid, L-glutamic acid, and cysteine contents increased in the experimental group that used the hair hardener. In terms of changes in surface color, L* value was high in the experimental group. A* value, which represents the level of reddish color, was also high in the experimental group. In contrast, b* value, which reveals the level of yellow color, was low in the experimental group. In observation of hair surface using the SEM, hair cuticles were tidier in the experimental group than in the control group. In terms of tensile strength, the experimental group was greater than the control group. According to measurement of wave efficiency by the frequency of shampooing after a general perm and setting perm as well, wave formation was more efficient in the experimental group.
모형토조 실험 및 유한요소 해석에 의한 지오그리드의 보강토 옹벽 적용성 고찰
유세은(Se Eun Yoo),최용석(Yong Seok Choi),한지연(Ji Yeon Han),전한용(Han-Yong Jeon) 한국지반신소재학회 2013 한국지반신소재학회 학술발표회 Vol.2013 No.4
In order to minimize settlement of shallow foundation, model test is performed using geogrids for reinforcement. The optimal reinforcement effect is found by varying reinforcement length to 1, 2, 4, and 5 times of foundation length and changing reinforcement layer to 10㎝ and 20㎝ from the surface. In the test result, it is interpreted that 2 layers and 4 times of foundation length is the most effective reinforcement condition of geogrids. The reinforcement effect of welded type 6T is less than the reinforcement effect of warp knitted type 6T. It can be seen that the stiffness of reinforcement makes same behavior with soil difficult, so capacity of reinforcement is reduced.