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일체식교량의 접속슬래브 연결철근 형상에 따른 연결부 구조거동에 대한 실험연구
유성근 ( Sung Kun You ),김나연 ( Na Yeon Kim ),김호섭 ( Ho Seop Kim ),김현기 ( Hyun Gi Kim ),김영호 ( Young Ho Kim ) 한국복합신소재구조학회 2014 복합신소재구조학회논문집 Vol.5 No.4
An experimental study on the structural behavior of connection types between approach slab and integral abutment has been done for three typical bar connections. Typical hinge style reinforcing bar detail for its connection is preferred in order to accommodate rotation of the approach slab among engineers. However, the straight horizontal bars can be used as connection detail accomodate structural capacity. Total six specimens with three types of rebar detail are tested for direct tensile and bending load. The characteristic structural behaviors are carefully monitored and all the strain gauge data obtained are analyzed. It is shown that the structural performance of all the specimens well exceed its design allowance. Several design suggestions are given based on careful reviews on the experiment.
레이저 미세가공 기술을 이용한 초소형 전자빔 장치용 정전장 전자렌즈의 제작
안승준,김대욱,김호섭,김영정,이용산,Ahn, Seung-Jun,Kim, Dae-Wook,Kim, Ho-Seop,Kim, Yeong-Jeong,Lee, Yong-San 한국재료학회 2001 한국재료학회지 Vol.11 No.9
For electron beam lithography and SEM(scanning electron microscopy) applications, miniaturized electrostatic lenses called a microcolumn have been fabricated. In this paper, we report the fabrication technique for 20~30$\mu\textrm{m}$ apertures of electron lenses based on silicon and Mo membrane using an active Q-switched Nd:YAG laser. Experimental conditions of laser micromachining for silicon and Mo membrane are improved. The geometrical structures, such as the diameter and the preciseness of the micron-size aperture are dependent upon the total energy of the laser pulse train, laser pulse width, and the diameter of laser spot.