자동차용 훼스너의 내식성 향상을 위한 표면처리 개발에 대한 연구

안현민(Hyunmin Ahn),오신종(Shinjong Oh) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Exterior cosmetic corrosion of car caused underestimation for used car residual value. Besides, parts intensity decline due to corrosion have a negative effect on automobile driving safety. In fasteners for vehicles, methods of corrosion protection are mainly used to Zinc-plating, alloy-plating and dacromet-coating. Dacromet-coating have the advantage of practical use and price comparing with zinc or alloy plating. But for using dacromet-coating fasteners, it is very important to gain torque stability. Accordingly, in order to use dacromet-coating fastener, also we need torque stability. In the study, we will discuss dacromet-coating to improve corrosion-resistance and to obtain torque stability of fastener.

윌리엄 포사이드 작품의 초현실주의 표현기법 분석 - 「추상화된 도시」, 「흩어진 군중」, 「헤테로토피아」를 중심으로 -

안현민 ( Ahn Hyunmin ) 한국무용예술학회 2021 무용예술학연구 Vol.82 No.2

This study aims to find surrealism expressions in three pieces of William Forsythe by referencing four surrealism techniques : automatisme, dépaysement, collage, frottase. To analyze the works, the author enumerates notions and traits of surrealism techniques referring to other scholarly papers, books and videos. The City of Abstracts has a rubbed effect of audience’s body image. Scattered Crowd puts thousands of ballons in the space which, looks unfamiliar and irrelevant. Heterotopia emphasizes unconsciousness, which is the point of surrealism using props and sounds of dancers. Through these analyses, Forsythe’s works exemplify how surrealism techniques affect on contemporary dance works.

LED DRL의 탄화 가속 수명 시험 연구

최경덕(Kyungduk Choi),안현민(Hyunmin Ahn),정동혁(Donghyuk Jung),김종수(Jongsu Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11

DRL(daytime running light), one of the headlamp functions of automobiles, helps the driver can identify the vehicle in daytime when low beams and position lights are not used. Many car makers are taking advantage of high lifespan by mounting LED light source in the DRL and are applying an indirect light optical system using a transparent light bar for a flexible design. However, in recent years, light bar optical system has been receiving many field claims as a phenomenon called DRL discoloration. In this study, the cause of the failure mode is identified through feasibility test and distructive analysis. also, the accelerated life test and accelerated model are established to be applied to the development of parts with the same failure mechanism in the future.

전조등 각도 조절 장치 부하 예측을 통한 내구 수명 분석 방법에 대한 연구

정재훈(Jaehoon Jeong),김찬중(Chanjoong Kim),안현민(Hyunmin Ahn),김경희(Kyunghee Kim),은창완(Changwan Eun) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11

A device that can adjust the height of the headlamp by changing the tilt of the vehicle is called Head Lamp Leveling Device(HLLD). The driver may manually operate the device from the drivers seat or automatically adjust it through a vehicle height sensor. Therefore, this device operates a lot depending on the condition of use, and wear or operation abnormalities may occur due to its durability. In addition, as various designs, LED, electronic circuits, and heat dissipation devices are assembled into the headlamp light module, the weight of the light module increases, which puts a lot of load on the HLLD to move the light module. However, when the lamp is assembled, it is difficult to check the load applied to the HLLD due to the weight of the light module and the frictional force of the guide rail or pivot for moving the light module. Therefore, this study proposes an evaluation method that measures the load applied to HLLD in the head lamp assembly state and predicts the durability life according to the HLLD load.

女大生의 衣服構成을 위한 身體計測 平均値에 關한 硏究

安顯玟 이화여자대학교 한국문화연구원 1966 韓國文化硏究院 論叢 Vol.8 No.-

The most important factors in dressmaking are determination of the size of a dress and preparation of a pattern. An accurate measuring of the body is necessary if a dress is to be made to fit each individual. No study has been made in Korea of the standard physical measurements for dressmaking. Measurements were made of 27 physical parts of 1,929 students of the Ehwa Womans University Liberal Arts and Science College. Those students measured represented 10 provinces and their ages ranged from 17 to 24. The measurements were done in four categories weight, length, circumference, and width. The category of length covered height, head, full length, waist back length, slacks length, waist to thigh, sleeve, elbow, chest, and waist front. The category of circumference covered high bust, bust, low bust, waist, hip, arm, upper arm, elbow, wrist, hand, neck, and head. The category of width covered shoulder, back, chest, bust point space. On the basis of these measurements, the study was made of: (1) The average size and standard variations of the above mentioned physical parts by city and province, and breakdown of students by age and province (2) The average sizes and standard variations of all physical parts (3) The average sizes and standard variation of each physical parts by chest width (4) Comparision of the major physical parts Results of this study are as follows: Because each province was not represented by equal number of students, provincial averages cannot be said reliable, However, Cheju-do and Kangwon-do had the higher averages, and kyonggi-do, Cholla-bukto, and Seoul showed lower averages. The variation between the highest and lowest measurements was 1cm. in length, 1.2cm. in circumference, 0.7cm. in width, and 1.9kg. in weight. Difference between localities was not recognizable. Although the way of living and social environment may differ, modern means of transportation have contributed to the rapid exchange of culture among localities, and especially among the students who have completed a middle and high school education. Thus it is considered that no tangible difference exists between geographic areas. (Refer to Chart 1 and Chart 2) With regard to the measurements by age, the averages and the standard variations of students at the age of 17 (16 students) and at 24 (11 students) were constant. Although the number of students in the two age groups measured was small, the averages are considered statistically accurate. However, the average measurements of students in the 18 years old group (178 students) and 19 years old group (307 students) was the best. The fact that the averages became lower as the age increased showed that students who were somewhat fat in the earlier school years tended to become slim and more beautiful with the physiologic development and intellectual growth. (Refer to Chart 3) The correlation between the chest width and other physical measurements was as follows. A chest width of 76 to 80 cm. was found in 23.5 per cent of the students measured, a chest width of 80 to 84 cm. in 36.4 per cent, and width of 84-88 cm. in 24.9 per cent. The average chest width was 81.9 cm. AS the width of chest increased, the following increases were made in other physical parts: Lenth-0.9cm. in height, 0.08cm. in head, 0.6cm. in full length, 0.2cm. in waist back, 0.6cm. in slacks, 0.2cm. in waistline to thigh, 0.5cm. in sleeve, 0.3cm. in elbow, 0.4cm. in waist front, and 0.4cm. in chest. Circumference-2cm. in chest, 1.2cm. in waist, 1.5cm in hip, 0.7cm. in arm, 0.2cm. in wrist, 0.3cm. in hand, 0.3cm. in neck, and 0.3cm. in head. Width category-0.3cm. in the shoulder, 0.4cm. in the back, 0.4cm. in the chest, and 0.5cm. in the bust point site. Weight-2kg. The most important measurement in dress making is that of the chest, A chart which shows the average and the variation in chest measurements has been prepared and was compared with the measurements from the Bunka Dress Institute in Tokyo, Japan. The latter have been widely used as guides for Korean dressmaking and by the clothing departments in the girl's middle and high schools. (Refer to Chart 6) Prior to establishing standards for all physical measurements of Korean college women, we have presented standard chest sizes for reference. The course of dressmaking includes Idea-Style-Pattern-Fitting. If this course is to be followed strictly, it is desirable to have knowledge about the standard physical measurements. The proportion of the height to other physical measurements in the category of length, and the proportion of the chest to measurements in the categories of circumference and width are shown in Chare 7. The proportion of the head to the body was 1 to 8 in Korean college women. The above study results will be of help and provide reference standards for Korean dressmakers and students studying clothing, designing, and dress making.