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한길영(G.Y.Han),이동기(D.G.Lee),김이곤(E.G.Kim),김기성(K.S.Kim) 한국해양공학회 1995 韓國海洋工學會誌 Vol.9 No.1
The hygrothermal efftect on three different types of Glass/Polypropylene was investigated under the environment of 40℃ distilled water. The residual strength of Glass/Polypropylene with randomly oriented and fiber content of 40wt%(R40) was found stable under the moisture content of 0.2%. In this case, the maximum moisture content was 0.53%. On the other hand, Glass/Polypropylene with unidirection and 42wt%(U42) and 50wt%(U50) fiber content, respectively, showed the residual strength less stable than R40. However, the maximam moisture contents were 0.52% and 0.45% respectively.
딤플형 내부 구조체를 가진 ISB 판넬의 굽힘 강성 특성
안동규(D. G. Ahn),이상훈(S. H. Lee),김진석(J. S. Kim),문경재(G. J. Moon),한길영(G. Y. Han),정창균(C. J. Jung),양동열(D. Y. Yang) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
The objective of this paper is to investigate into bending and failure characteristics of ISB panel with dimple shapes as inner structures. Through three-points bending test, the force-displacement curve and the failure shape are obtained to examine the deformation pattern, characteristic data including maximum load and displacement at the maximum load and failure pattern for the ISB panel. In addition, the influence of design parameters for ISB panel on the bending stiffness and failure mode has been found. From the results of the experiments, it has been shown that bending and failure characteristics of the ISB panel can be controlled by the ratio of radius and the direction of the material.