래핑공정에서 그루브 밀도가 유막 두께에 미치는 영향

이태경(Taekyung Lee),김도연(Doyeong Kim) 한국트라이볼로지학회 2019 한국트라이볼로지학회 학술대회 Vol.2019 No.10

급속열림 파일럿 밸브의 컨트롤 챔버 배기시간 고찰

이태경(Lee Taekyung),최문호(Choi Moonho) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.3

종합병원 공용공간 디자인을 위한 사용자 평가 연구

이태경(Lee, Taekyung),백진경(Paik, Jinkyung),오찬옥(Oh, Chanohk),김석태(Kim, Suktae) 인제대학교 디자인연구소 2014 Journal of Integrated Design Research (JIDR) Vol.13 No.2

병원시설은 단순히 병을 진료하는 공간이 아닌 환자, 방문자, 직원과 같은 사용자를 고려하여 사회적, 심리적, 정서적 기능이 강화되고, 보다 쾌적하고 친근한 이미지의 병원공간이 요구되고 있다. 병원공간 중 접수, 수납, 대기공간과 같은 공용공간은 환자나 방문객들이 처음 맞이하게 되는 공간이고 다른 진료실로 연결되는 역할을 하며 진료 후에도 수납하기 위해 마지막까지 머무르는 공간이다. 따라서 병원에 대한 전반적 분위기와 첫인상을 느끼고 편리함에 대한 이미지를 만들 수 있는 중요한 공간이다. 이에 본 연구는 부산광역시의 H종합병원을 대상으로 접수ㆍ수납ㆍ대기공간에 대한 사용자 평가를 하여 보다 만족스러운 병원시설 디자인을 위한 기초자료로 활용하고자 하였다. 본 연구를 위해 현장조사와 설문조사를 시행하였고, 총 202부 설문조사자료를 통계분석프로그램(SPSS WIN V18.0)을 사용하여 분석하였다. 조사결과 응답자는 전반적으로 접수ㆍ수납ㆍ대기공간에 만족하였고 특히 편리한 위치와 밝은 빛환경, 온도조절상태에 대한 평가가 높게 나타났다. 응답자들은 더 좋은 병원공간을 위해 편안한 의자와 다양한 디자인의 의자를 요구하였고 따뜻한 색채사용과 소품을 활용하는 등 친근한 이미지의 병원공간 인테리어를 요구하는 것으로 나타났다. The aim of this study is to find out user demands to design hospital space where user can continuously visit and be satisfied. For this, an evaluation on characteristics of public space in general hospital were carried out. A document research and survey research were carried out for this study. As for the document research, architectural planning element and user(patient, visitant, doctor, nurse etc.) evaluation for hospital were examined. As for the survey research, field survey was carried out on public space in H general hospital in Busan and questionnaire survey was conducted on the user of those space. This study analyzed spatial layout and location, indoor environment, furniture, and design of color and finishes. The results were as followings. The users evaluated very high the light(natural lighting and lighting), a temperature condition, and convenient location of public space spatial. The users demanded comfortable chairs and tables for belongings. Also they responded that warm color and familiar decoration were important aspects for interior design of public space in general hospital.

대형 덤프밸브 내장품 열팽창 간섭현상 고찰

이태경(Taekyung Lee),오승환(Seunghwan Oh) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11

Effect of Cu addition on strain-hardening behavior of hot-rolled Fe-Mn-C-Cu TWIP steels

Taekyung Lee(이태경),Young Jin Kwon(권영진),Chong Soo Lee(이종수) 한국소성가공학회 2014 한국소성가공학회 학술대회 논문집 Vol.2014 No.5

공기압과 응력센서를 이용한 공기구동밸브 진단평가기술 분석

이태경(Taekyung Lee),김윤중(Yunjung Kim),현윤순(Yunsoon Hyun) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5

The performance of safety related Air-Operated Valves(AOV) in nuclear power plants has been evaluated to confirm their required Design Based Analysis(DBA) results. As a part of valve performance evaluation, AOV should be tested in site to evaluate its setup and running load. A test by using strain gauge sensor requires considerable time and cost but ensure high accuracy. On the other hand, a test by using only air pressure sensors can save curing time and cost but its accuracy is relatively low. The availability of the test by using air pressure sensor has been discussed from the accuracy and economics point of view, compared to the test by using by strain gauge sensors.

사용자중심 아파트 공용공간 디자인을 위한 사용자 평가 연구

이태경(Lee, Taekyung),최인영(Choi, Inyoung) 인제대학교 디자인연구소 2016 Journal of Integrated Design Research (JIDR) Vol.15 No.1

연구배경 : 아파트는 공동주택이라는 단순한 건물의 집합이 아닌 주거환경으로 아파트 공용공간은 거주자들이 공동으로 사용 관리하고 교류하며 커뮤니티의식을 형성하는 공간이다. 본 연구는 사용자 중심의 아파트 공용공간 디자인방향을 모색하기 위해 공용공간 사용특성 및 요구, 거주자의식을 살펴보았다. 연구방법 : 문헌 및 기존연구 고찰을 통해 아파트 공용공간의 공간범위 및 분류를 설정하여 분석의 틀을 구성하였다. 그리고 조사대상을 선정하여 현장조사를 통해 공용공간의 구성 및 현황을 파악하고, 공용공간에 대한 거주자들의 사용특성 및 의식을 설문조사하였다. 연구결과 : 아파트 공용공간을 기능 및 역할에 따라 옥외공용공간, 주민공동시설, 관리 및 서비스 시설로 구분하였다. 공간사용특성을 살펴본 결과, 일상적으로 사용하는 시설을 중심으로 이용도 및 만족도가 높게 나타났으며, 개선요구 및 추가요구도 높음을 볼 수 있었다. 그리고 공용공간 의식을 살펴본 결과, 기능적 측면에서 ‘장소의존성’, 정서적 측면에서 ‘장소정체성’, 주인의식과 관련된 행태로 ‘애착행동성’ 요인을 파악하였다. 결론 : 공용공간은 전체 주거환경 만족도에 영향을 미치는 중요한 공간으로 계획시 거주자들의 일상생활동선이 되는 공간 및 시설이 중요하게 고려되어야 함을 파악하였다. 그리고 이러한 기능적 측면과 함께 사용자의 친밀성, 자기이입, 참여 등을 이끌어내기 위한 심리 · 행태적 측면도 중요하게 고려되어야 함을 파악하였다. 이러한 결과는 공용공간을 이해하는 기본 틀로서 의의가 있으며, 사용자중심의 아파트 공용공간 계획을 위한 자료를 제공하는데 기여할 것이다. Background : A shared space in apartment is a venue that residents can use together and where good neighborly relationships and community bonds are formed. The purpose of this study is to investigate user-centered design direction by exploring shared space usage and demand, residents" consciousness. Methods : For this purpose, ⑴ literature review was performed to lay the foundation for research by defining the space scope of shared spaces in apartments and by categorizing them. ⑵ The participants were selected, and field research was conducted to explore the composition and status of the shared spaces. ⑶ A survey was conducted to investigate residents" space usage characteristics and consciousness of shared spaces. Result : The results showed that the shared spaces in apartments were categorized, according to their functions and roles, into outdoor shared spaces, community facilities, and management and service facilities. Those facilities used on a daily basis were more frequently used and high satisfactory. In addition, demands for improvement and investment were found to be high for frequently-used facilities. With regard to consciousness, place dependence in the functional respect, place identity in the emotional respect, and affective attachment associated with consciousness of ownership were identified as the components of consciousness of shared spaces. Conclusion : It was also found that the shared space does affect the overall satisfaction with the housing environment among residents. In this study, the results are significant as a framework to understand shared spaces from users" perspective.

정반 그루브의 형상치수가 사파이어 기판의 연마특성에 미치는 영향

이태경(Taekyung Lee),이상직(Sangjik Lee),정해도(Haedo Jeong),김형재(Hyoungjae Kim) 한국트라이볼로지학회 2016 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.32 No.4

In the sapphire wafering process, lapping is a crucial operation in order to reduce the damaged layer and achieve the target thickness. Many parameters, such as pressure, velocity, abrasive, slurry and plate, affect lapping characteristics. This paper presents an experimental investigation on the effect of the plate groove on the material removal rate and roughness of the wafer. We select the spiral pattern and rectangular type as the groove shapes. We vary the groove density by controlling the groove shape dimension, i.e., the groove width and pitch. As the groove density increases to 0.4, the material removal rate increases and gradually reaches a saturation point. When the groove density is low, the pressing load is mostly supported by the thick film, and only a small amount acts on the abrasives resulting to a low material removal rate. The roughness decreases on increasing the groove density up to 0.3 because thick film makes partial participations of large abrasives which make deep scratches. From these results, we could conclude that the groove affects the contact condition between the wafer and plate. At the same groove density, the pitch has more influence on reducing the film thickness than the groove width. By decreasing the groove density with a smaller pitch and larger groove width, we could achieve a high material removal rate and low roughness. These results would be helpful in understanding the groove effects and determining the appropriate groove design.

그린 리모델링에 대한 인식과 방향에 대한 고찰

이태경(Lee, Taekyung),김미진(Kim, Mijin),변현미(Byun, Hyunmi) 충북대학교 생활과학연구소 2017 생활과학연구논총 Vol.21 No.2

The recent international focus on the environment has resulted in eco-friendly “green buildings” emerging in the construction industry. Green remodeling has been used in South Korea to address the energy crisis and to mitigate greenhouse gas emissions. The government aims to reduce greenhouse gas emissions by pushing for green renovation that improves buildings’ energy performance. The purpose of this study was to investigate consciousness about green remodeling and suggest trends in green remodeling through a literature review and user survey. The results indicated that respondents did not fully recognize the concept and current policies in the field of green remodeling. Green remodeling can offer energy and management cost savings in the field of housing construction. Most respondents took a positive view of the effectiveness and future prospects of green remodeling. Respondents were very interested in electric energy and natural light and considered natural lighting, insulation, and solar powered heating as important elements for current green remodeling practices. We suggest the following. First, information and public relations offerings about green remodeling are needed to raise awareness regarding the importance of green remodeling for the public as well as for experts. Second, green remodeling needs to be actively applied to both private construction and public construction. Thus, green remodeling guidelines should be developed according to buildings’ purpose, size, and form. Finally, the effectiveness of green remodeling elements is influenced by user behavior, so there is a need to educate residents about energy saving methods and equipment use. This study is expected to serve as a basis for future pilot projects for green remodeling of housing.

고정 입자 정반을 이용한 사파이어 기판의 연마 특성 연구

이태경(Taekyung Lee),이상직(Sangjik Lee),조원석(Wonseok Jo),정해도(Haedo Jeong),김형재(Hyoungjae Kim) 한국트라이볼로지학회 2016 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.32 No.2

Diamond mechanical polishing (DMP) is a crucial process in a sapphire wafering process to improve flatness and achieve the target thickness by using free abrasives. In a DMP process, material removal rate (MRR) is a key factor to reduce process time and cost. Controlling mechanical parameters, such as velocity and pressure, can increase the MRR in a DMP process. However, there are limitations of using high velocities and pressures for achieving a high MRR owing to their side effects. In this paper, we present the lapping characteristics and improvement of MRR by using a fixed abrasive plate through an experimental study. The change in MRR as a function of velocity and pressure follows Preston"s equation. The surface roughness of a wafer decreases as the plate velocity and pressure increases. We observe a sharp decrease in MRR over the lapping time at a high velocity and pressure in the velocity and pressure test. An analysis of surface roughness (Rq and Rpk) indicates that wear of abrasives decreases the MRR sharply. In order to investigate the effect of abrasive wear on the MRR, we utilize a cutting fluid and a rough wafer. The cutting fluid delays the wear of abrasives resulting in improvement of MRR drop. The rough wafer maintains the MRR at a stable rate by self-dressing.