제3분과 : 경영윤리 1. 한국경영자의 기업윤리 의식과 행동에 관한 연구

안동규,주우진,한정화 한국경영학회 1995 추계학술연구발표회 발표논문집 Vol.- No.-

공적연금기금의 재정건전성 확보방안

안동규,안성찬 동국대학교 대학원 1998 東院論集 Vol.11 No.-

딤플형 내부구조체를 가진 Isb 판넬의 정적 굽힘 특성

안동규,문경제,한길영 朝鮮大學校 機械技術硏究所 2006 機械技術硏究 Vol.9 No.1

본 연구에서는 덤플형 내부 구조제를 가진 ISB 판넬의 굽힘 및 파손 특성을 분석/고찰하고자 한다. 딩플형 내부 구조체를 가진 ISB 판넬의 설계조건에 따른 변형 형상, 최대하중 및 최대하중에서의 변위와 같은 특성치 및 파손 형태를 분석하기 위하여 정적 3접 굽힘 시 험을 통한 하중-변위 곡선과 파손 형상을 얻었다. 또한, 본 실험 결과를 이용하여 ISB 판 넬 설계 변수의 굽힘 특성 및 파손 모드 영향성을 분석하였다. 본 연구 결과 딩플형 내부 구조체를 가진 ISB 판넬의 굽힘 및 파손 특성은 덤플형 내부구조체의 반경비와 ISB 판넬 의 재료 방향에 따라 제어 가능함을 알 수 있었다. The objective of this pater 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.

VLM-ST 공정과 삼단역전 쾌속 툴링 공정을 이용한 3차원 제품 정형가공에 관한 연구

안동규,이상호,양동열 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

The technical combination of RP and RT has a potential for rapid manufacturing of three-dimensional parts. In the present work, a new RP system, VLM-ST, is proposed to manufacture net shapes of 3D prototypes. ㅁ human head shape and a knob shape are manufactured by the VLM-ST apparatus. In addition, a new RT technology, which utilizes a RTV molding technique and a triple reverse process technique, is proposed to manufacture net shapes of 3D plastic parts using prototypes of VLM-ST. A plastic part of the knob shape is produced by the proposed RT technology. The combination of the proposed RP and RT enables the manufacture of a plastic knob within two days.

고출력 CW Nd:YAG 레이저를 이용한 CSP 1N 박판재 절단시 공정변수의 절단표면특성에 미치는 영향

안동규,김민수,이상훈,유영태,박형준 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

The objective of this research work is to investigate the influence of process parameters, such as power of laser, travel speed of laser and material thickness, on roughness and striation of the cut surface for the case of cutting of CSP IN sheet using high power Nd:YAG laser with continuous wave (CW). In order to find the practical cutting region and the relationship between process parameters on the roughness and the striation, several laser cutting experiments are carried out. From the results of experiments, the allowable cutting region and an optimal cutting speed for each cutting condition have been obtained to improve the quality of the cut surface. In addition, it has been shown that the surface roughness is related to the number of striation and depth of valley of the cut surface.

선형 열선절단기를 이용한 발포폴리스티렌 폼 판재 절단시 일반 절단경사각이 제품 정밀도에 미치는 영향에 관한 연구

안동규,양동열,한길영 朝鮮大學校 機械技術硏究所 2003 機械技術硏究 Vol.6 No.2

본 연구에서는 EPS 폼의 일반 경사 열선절단시 절단경사각이 제품 정밀도에 미치는 영향에 대하여 연구하였다. EPS 폼의 일반 경사 열선절단시 EPS 폼 내부 온도분포가 제품정밀도에 매우 큰 영향을 미침으로 일반 경사 열원 모델과 완전 경사 적응형 유한요소격자를 이용한 비정상상태 3차원 열전달해석을 수행하였다. 해석 결과 열선절단기 운영조건내에서 EPS 폼의 일반 경사 열선절단시 x 축 절단경사각, 즉 회전축이 열선 절단 방향과 일치하는 경사각, 이 절단폭과 모서리 용융길이 미치는 영향은 각각 0.03 ㎜ 와 0.01 ㎜ 이하였다. EPS 폼의 일반 경사 열선절단시 절단 경사각이 제품 정밀도에 미치는 영향을 실험적으로 분석/고찰하기 위하여 일반경사 절단 실험을 수행하였다. 실험 결과는 해석결과와 매우 잘 일치 하였으며, x축 절단경사각이 제품정밀도에 미치는 영향은 매우 작았다. 이 결과로부터 제안된 유한요소해석 모델의 타당성을 입증하였다. 또한, EPS 폼의 일반 경사 열선절단시 y축 절단경사각에 비하여 x축 절단경사각이 제품 정밀도에 미치는 영향이 매우 미미함을 알 수 있었다. In the present study, the influence of cutting angle on the dimensional accuracy, such as kerfwidth and the part quality. in hotwire cutting of EPS foam for the case of generally-sloped cutting with two cutting angles is investigated. Transient heat transfer analysis using a generally-sloped heat faux model arid a fully conformed mesh structure is carried out to estimate an accurate temperature field in the EPS foam. From the results of the analysis. it has heen shown that the influence of cutting angle about the x-axis in which the rotational axis is normal to hotwire cutting direction on kerfwidth and the melted length in the edge is less than 0.03 rnm and 0.01 mm in the operating range of the hotwire cutter, respectively. In order t o experimentally investigate the influence of cutting angle for generally-sloped cutting on the kerfwidth and the part quality of the cut part, inclined cutting tests with two cutting angles are carried out. Through a comparison of the computed results with the experimental results. the proposed numerical method of analysis is verified. Based on these results, it has been shown that the influence of cutting angle about the y-axis in which the rotational axis is normal with hotwire cutting direction is appreciably negligible in comparison with that of cutting angle about the x-axis.

Dynamic Failure Characteristics of Metallic Sandwich Plate with Repeated Metallic Truss Cores Subjected to a Plane Strain Drop Impact Condition

안동규,선향선 한국정밀공학회 2014 International Journal of Precision Engineering and Vol.1 No.1

Dynamic failure characteristics of a metallic sandwich plate with repeated metallic cores considerably affect the dynamic property and the functionality of the plate. The objective of this paper is to examine dynamic failure characteristics of a metallic sandwich plate with repeated metallic truss cores subjected to plane strain drop impact conditions via a three-dimensional finite element analysis. Dynamic failure modes of the metallic sandwich plate have been estimated using the residual deformed shape of the plate. Nondimensional impact parameters have been adopted to generalize the dynamic failure map (DFM). Limit curves for different dynamic failure modes have been estimated via a regression analysis using the limit impact conditions in dynamic failure plots (DFPs). DFMs of the metallic sandwich plate have been created using the limit curves and the DFPs. The effects of the non-dimensional impact parameters on dynamic failure characteristics of the metallic sandwich plate have been discussed. The relationship between nondimensional impact energy and non-dimensional absorbed energy has been estimated to investigate the energy absorption characteristics of the plate. Finally, it has been revealed that the initiation of the instability mode is prevented to obtain the desired performance of the metallic sandwich plate with repeated metallic truss cores.

Moldflow 해석을 이용한 형상 적응형 냉각 채널을 가진 냉장고 서랍용 사출성형 금형 설계

안동규,박민우,박승화,김형수 (사)한국CDE학회 2010 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2010 No.1

2018 평창 동계올림픽의 성공적 개최를 위한 고찰

안동규 한국문화관광연구원 2011 한국관광정책 Vol.- No.45

CW Nd:YAG 레이저를 이용한 Inconel 718 절단시 절단면 형성 고찰

안동규,변경원,유영태 한국공작기계학회 2007 한국공작기계학회 추계학술대회논문집 Vol.2007 No.-

The objective of this research work is to investigate the influence of process parameters on the surface roughness and the formation of the cut section for the case of cutting of Inconel 718 sheet using high power CW Nd:YAG laser. In order to find the relationship between process parameters and surface roughness, Several linear cutting experiments have been carried out using 6-axis controlled robot laser cutting system. From the results of the experiments, the relationship between process parameters and surface roughness has been obtained. In addition, it has been shown that the surface roughness is highly related to the striation formation of the cut section. The results of experiments have been shown that the surface roughness of the cut section lies in the ranges of Ra of 1.39-5.70㎛ and R_(max), of 8.20-29.10㎛. Through the observation of the cut section, it has been shown that the cut area of the cut section has several oxidized substances and the ductile fracture occurs in the break area.