The molybdenum cup and molybdenum pin, which are the main materials of the molybdenum electrode used for the LCD BLU CCFL electrode, have not been developed in Japan and all of them are imported and used from Japan, is giving a competitive burden. In this research, to develop the manufacturing technology of molybdenum pin used for CCFL electrode of LCD BLU, development of linear processing technology, development of molybdenum wire surface treatment technology, development of wire cutting technology, production of molybdenum pin, design and fabrication of JIG and Fixture for inspection, molybdenum pin prototyping and analysis, and development of 100% molybdenum pin inspection technology. In this paper, especially, research on prototype manufacturing and CAE analysis is treated.

In this study, the failure characteristic of the center floor of a front-wheel drive vehicle was investigated according to material. UHSS, Al6061-T6, CFRP, and CFRP-Al were used as materials. As the analysis condition, a fixed support was applied to the rear surface of the center floor and a forced displacement of 2 mm/sec was applied to the front surface. As the result, when comparing with the equivalent stress and strain energy according to the material, it was found that UHSS, Al6061-T6, CFRP, and CFRP-Al were higher in the order. Also, when comparing with the equivalent strain due to the material, it was shown that the equivalent strain was high in the order of Al6061-T6, UHSS, CFRP and CFRP-Al. As for the damage characteristic of the center floor according to the material, it was found that the highest structural stability was obtained when UHSS was used. However, it was found that it was good to utilize Al6061-T6 in order to acquire the structural stability along with the structure with the lighter weight.

동북아지역의 구분마연 기법은 대체로 동검, 동모, 동과에서 관찰되고 한국식, 중국식, 일본식 청동무기에 표현되어 있다. 이들은 중국 산서·산동지역, 한국 남부지역, 러시아 연해주 동남부지역, 일본 북부구주·산음지역에 분포한다. 일련의 자료를 통해 볼 때, 한국식 청동무기는 중국 동 북지역뿐만 아니라 중원지역(산서·산동)과의 관계에 따라 출현한 것으로 파악된다. 즉 동북아지역의 청동기문화는 각각의 지역권을 형성하여 상호 유기적이면서 독립적인 위치에 성립된 것으로 이해되는 바이다. 구분마연은 청동무기의 능각과 인부에 횡방향의 규칙적인 마연이 있는 것을 말한다. 한국식동검의 구분마연은 0.2~0.5cm 정도의 폭으로 관찰되어 이 좁은 폭을 주목하였다. 즉 봉처럼 얇은 형태, 일정 크기의 단면을 형성한 동추를 제작도구로 제시하였다. 이와 함께 청동무기와 청동공구는 분리되어 각각의 주형에서 제작되는데 이러한 점은 구리와 주석의 성분비를 조정한 것으로 보인다. 다시 말해 무기와 다른 경도의 동추를 사용하여 세밀한 스크래치인 구분마연을 한국식동검에 넣은 것이다. 따라서 한국식동검의 전반적인 마연(주조 지느러미 제거, 능각과 인부 및 절대 성형)은 지석을 사용하고, 세밀한 구분마연은 동추를 활용한 것으로 판단된다. 이를 종합하여 볼 때, 동추 a형은 다뉴세문경 등의 세밀한 문양 및 제도에, 동추 b형은 다뉴조문경ㆍ유문청동의기ㆍ유문청동무기 등의 굵은 선문과 주연부에, 동추 c형은 다뉴경의 각진뉴 등에 사용되는 것으로 보았다. 또한 동추 a·b·c형과 동착 a·b형은 전반적인 제도·성형 및 주형 깎기에 사용되었을 것이다. 즉 각각의 제작 및 사용은 형태나 문양에 맞춰 상호 유기적이면서 연동적으로 활용된 것으로 보인다. 이상을 토대로 한국식동검의 실험고고학을 진행하고, 그 정보를 제시한다.

The aim of this study is to define the new expressive techniques for multicolored clamp resist (hyuphill) dyeing, based on empirical verification on relics that are estimated to be dyed by the exchange of more than two wood blocks: a previously undiscovered technique. Clamp resist dyeing (assumed to be made by exchanging wood blocks) have uneven resist printing lines or cloudy gradation. These are reproduced as follows: first, they have uneven contour lines, particularly with the color blue. It is possible to exchange wood blocks separately on patterns with uneven resist printing lines, and it has been verified that the exchange of wood blocks makes these irregular resist printing lines. It has also been verified that exchanging the wood blocks according to the gradation (to emphasize the cubic effect on the patterns) yields clamp resist dyeing with no resist printing lines but with cloudy gradations that have accented borders. This study provides basic information that enables methods of multicolored clamp resist dyeing through wood block exchange to be deduced (something that has not been attempted for a long time). Thus, the revival of the modern Korean dyeing culture based on the conservation and perseverance of the traditional dyeing techniques can be achieved.

In this study, partially dry transfer is investigated to solve the problem of fully dry transfer. Partially dry transfer is a method in which multiple layers of graphene are dry-transferred over a wet-transferred graphene layer. At a wavelength of 550 nm, the transmittance of the partially dry-transferred graphene is seen to be about 3% higher for each layer than that of the fully dry-transferred graphene. Furthermore, the sheet resistance of the partially drytransferred graphene is relatively lower than that of the fully dry-transferred graphene, with the minimum sheet resistance being 179 Ω/sq. In addition, the fully dry-transferred graphene is easily damaged during the solution process, so that the performance of the organic photovoltaics (OPV) does not occur. In contrast, the best efficiency achievable for OPV using the partially dry-transferred graphene is 2.37% for 4 layers.

본 연구에서는 통계적인 방법을 통해 DSM 제작에 있어, 토지피복과 식생의 영향을 정량적으로 살펴보았다. 산림지역이 DSM과 DEM 사이의 고도 차이를 증가시키는데 가장 큰 역할을 하였으며, 수종에 따라 약간의 차이는 있지만 침엽수림과 혼효림보다 는 활엽수림의 영향이 더 큰 것으로 나타났다. 항공사진의 촬영 문제, 왜곡, 촬영 당시 형태나 위치가 변하는 문제와 그늘 지역이 통계적인 관련을 낮춘 주요 원인으로 생각된다. 통계적인 관련을 낮춘 여러 원인에도 불구하고, 본 연구의 결과는 식생에 따른 임관의 형태적 특성을 직접적으로 반영한 것으로 보인다. 본 연구와 같은 자료가 보다 쌓인다면, DSM과 DEM의 특성을 통해 산림 속성과 수종 분포와 같은 정보를 확인할 수 있을 것으로 기대된다.

A variety of composite powders having different aluminum and carbon contents are prepared using various organic solvents having different amounts of carbon atoms in unit volume as ball milling agents for titanium and aluminum ball milling. The effects of substrate temperature and post-heat treatment on the texture and hardness of the coating are investigated by spraying with this reduced pressure plasma spray. The aluminum part of the composite powder evaporates during spraying, so that the film aluminum content is 30.9 mass%~37.4 mass% and the carbon content is 0.64 mass%~1.69 mass%. The main constituent phase of the coating formed on the water-cooled substrate is a non-planar α2 phase, obtained by supersaturated carbon regardless of the alloy composition. When these films are heat-treated at 1123 K, the main constituent phase becomes  phase, and fine Ti2AlC precipitates to increase the film hardness. However, when heat treatment is performed at a higher temperature, the hardness is lowered. The main constitutional phase of the coating formed on the preheated substrate is an equilibrium gamma phase, and fine Ti2AlC precipitates. The hardness of this coating is much higher than the hardness of the coating in the sprayed state formed on the water-cooled substrate. When hot pressing is applied to the coating, the porosity decreases but hardness also decreases because Ti2AlC grows. The amount of Ti2AlC in the hot-pressed film is 4.9 vol% to 15.3 vol%, depending on the carbon content of the film.

This is the research report concerned with designing and making of the flexible manufacturing system for educational training. The flexible manufacturing system is composed of several mechatronic(mechanical and electronic) subsystems which are automatically controlled by computer program. The main subsystems are materials feeder unit, automatic guided vehicle, robot for moving parts, indexing and stamping unit and computer system and more subsystems can be added for specific manufacturing processes. This dissertation includes the design and production characteristics of flexible manufacturing system for educational training. Finally, the educational training equipment is made and demonstrated in this research and is expected to use in various educational institutions, for example, technical educational and practical industrial training institutions.

본 논문은 초·중급 학습자를 위한 교재코퍼스 개발을 통해 난이도 별로 예문을 적절하게 활용하는 방안을 제시하고자 한다. 초·중급 교재코퍼스 개발은 학습자들이 배우고자 하는 어휘나 문법 규칙에 다양한 방식으로 노출될 수 있도록 예문을 수집하고 학습의 주체가 되어 활용할 수 있다는 점에서 큰 장점이 있다. 이에 본고는 회화, 문법, 작문 등의 연계교육에 교재 코퍼스가 어떻게 활용 가능한지 다양한 형태의 수 업 방안을 제언한다.

The composition of martensite transformation in NiAl alloy is determined using pure nickel and aluminum powder by vacuum hot press powder metallurgy, which is a composition of martensitic transformation, and the characteristics of martensitic transformation and microstructure of sintered NiAl alloys are investigated. The produced sintered alloys are presintered and hot pressed in vacuum; after homogenizing heat treatment at 1,273 K for 86.4 ks, they are water-cooled to produce NiAl sintered alloys having relative density of 99 % or more. As a result of observations of the microstructure of the sintered NiAl alloy specimens quenched in ice water after homogenization treatment at 1,273 K, it is found that specimens of all compositions consisted of two phases and voids. In addition, it is found that martensite transformation did not occur because surface fluctuation shapes did not appear inside the crystal grains with quenching at 1,273 K. As a result of examining the relationship between the density and composition after martensitic transformation of the sintered alloys, the density after transformation is found to have increased by about 1 % compared to before the transformation. As a result of examining the relationship between the hardness (Hv) at room temperature and the composition of the matrix phase and the martensite phase, the hardness of the martensite phase is found to be smaller than that of the matrix phase. As a result of examining the relationship between the temperature at which the shape recovery is completed by heating and the composition, the shape recovery temperature is found to decrease almost linearly as the Al concentration increases, and the gradient is about -160 K/ at% Al. After quenching the sintered NiAl alloys of the 37 at%Al into martensite, specimens fractured by three-point bending at room temperature are observed by SEM and, as a result, some grain boundary fractures are observed on the fracture surface, and mainly intergranular cleavage fractures.