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김윤곤,백돈흠,Kim, Yun-Gon,Baek, Don-Heum 한국방위산업진흥회 1998 國防과 技術 Vol.- No.228
첨단 무기체계의 경우는 선진국에서 기술이전 뿐만이 아니고 판매까지도 꺼린다는 사실과, 4대 강대국으로 둘러쌓여 있는 지정학적 요인 그리고 역사적으로 수 많은 외침 등을 고려할 때, 독자적인 첨단 무기체계 기술을 확보해 유사시 이를 개발하여 사용하는 것만이 우리의 생존권과 번영을 확보할 수 있는 최선의 길일 것이다.
Development of screening method for highly enriched peptides toward a multiple LPS using epoxy bead
Yun-Gon Kim(김윤곤),Chang-Soo Lee(이창수),Woo-Jae Chung(정우재),Eun-Mi Kim(김은미),Dong-Sik Shin(신동식),June-Hyung Kim(김준형),Yoon-Sik Lee(이윤식),Junho Chung(정준호),Byung-Gee Kim(김병기) 한국생물공학회 2005 한국생물공학회 학술대회 Vol.2005 No.10
탄소섬유복합체의 탄성계수와 극한응력으로부터 평가한 극한유효변형률
김윤곤 ( Kim¸ Yun-gon ) 한국복합신소재구조학회 2021 복합신소재구조학회논문집 Vol.12 No.5
취성특성을 가진 탄소섬유복합체의 인장특성을 결정하기 위해 ASTM D 3 0 39에 따라 인장시험을 실시하였다. 극한시점에 박리, 부분파단으로 인해 스트레인 게이지의 계측값의 변동성이 커져 신뢰성을 확보하기 어렵기 때문에 극한응력과 탄성계수를 이용한 유효극한변형률을 제안하고, 극한계측변형률과 상호보완하였다. 특히 게이지가 비정상적으로 작용할 경우에도 적용이 가능하다는 장점이 있다. 또한 유효극한변형률을 결정하는 탄성계수는 단일시편에서 여러 변형률 구간에 대하여 평가하여 비교 검증할 수 있다. Coupon tests were conducted under ASTM D3039 to determine the tensile properties of carbon fiber reinforced polymers (CFRP), which are brittle materials. The study proposes the evaluation of the ultimate effective strain from rupture stress and modulus of elasticity because of strain gauges’ inconsistent and unreliable measurement for delaminated CFRP layers and its partial laminate fracture at the ultimate and mutual complementary with measured ultimate strain. Thus, the proposed method can be applied even if the measured values from the strain gauge are abnormal. Furthermore, the elastic modulus can evaluate any strain range in a single specimen to compare and verify the ultimate effective strain in multiple strain intervals.
김윤곤 ( Kim Yun Gon ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.2
In this study, tensile properties of carbon fiber reinforced polymers(CFRP) with and without epoxy resin were compared by direct tension test. Although the strength contribution of resin is generally neglected because it is relatively infinitesimal and hard to be evaluated on-site application, resin enables CFRP itself to have higher strength and stiffness by arranging the layout of carbon fiber bundle, by decreasing the stressed effective length and by stress redistribution between fibers.
슬래브 강성 및 경계조건을 고려한 작은 보의 하중 분배
김윤곤(Kim, Yun Gon) 대한건축학회 2021 대한건축학회논문집 Vol.37 No.2
A new floor load distribution method for slabs with sub-beam was proposed, taking into account slab stiffness. In the current 45 degree-based load distribution method, the load distribution ratio of sub-beam and girder (RB:RG) is the same (50:50). However, when considering the composite action with slab and boundary conditions, the ratio of sub-beam would be smaller than that of girder. In this study, floor load distribution ratio according to the relative stiffness of slab and sub-beam and boundary conditions was evaluated by finite element analysis including slabs. The load distribution of the slab was greater when increasing the relative stiffness of slab and sub-beam, and that of sub-beam decreased as greater as that of the slab. For conservative design approach, the reduced portion from the sub-beam due to would add the load distribution of girder rather than subtraction from total floor load. In practical modules- span length, beam geometry, etc., the ratio (RB:RG) can be adjusted up to 40:60 by reducing the stiffness of sub-beam obtained by performance based design.