고무밴드 배치 방향과 간격에 따른 비신축성 직물의 신장률 분석

엄란이(Ran-i Eom),이예진(Yejin Lee) 대한인간공학회 2020 대한인간공학회 학술대회논문집 Vol.2020 No.10

비신축성 직물의 고무 밴드 봉제 조건에 따른 신장 특성 분석

엄란이 ( Ran-i Eom ),이예진 ( Yejin Lee ) 한국의류학회 2021 한국의류학회지 Vol.45 No.4

This study analyzes how sewing conditions for elastic bands on woven fabrics affect elongation. The directions of the elastic bands were vertical, horizontal, vertical and horizontal crossing, and horizontal and vertical crossing. Intervals between the elastic bands were 3.0 cm and 6.0 cm. The woven fabric was tailored for the elastic band sewing using warp, weft, and bias. Consequently, it was possible to visually confirm elongation differences according to the sewing condition of the elastic bands. A detailed examination demonstrated that the horizontal or vertical placement of elastic bands tailored in a crosswise direction produces high vertical elongation and low horizontal contraction. However, elastic bands sewed in crossing directions, regardless of warp and weft directions, resulted in both high vertical elongation and high horizontal contraction. In all cases, the more elastic bands were used, the higher the horizontal elongation. In conclusion, appropriate placements of elastic bands on woven fabric increases motion convenience.

여름철 환경에서 팬이 있는 조끼의 인체 착용 효과

엄란이 ( Ran-i Eom ),이예진 ( Yejin Lee ) 한국의류학회 2019 한국의류학회지 Vol.43 No.6

This study analyzed the effect of wearing a vest with an attached electric fan. Korean men in their 20s were given test “fan vests” equipped with fans on the chest, stomach, upper back, or lower back to wear. Participants wore them in a climate chamber set to replicate a summer environment (30±3°C, 75±1%RH, 0.2 m/sec). Subjective sensations and surface temperatures were measured. The attached fan on the front of the vest lowered the temperature of the vest and the skin surface where the fan was positioned, regardless of whether the wearer engaged in exercise. However, a fan attached to the lower back of the vest was effective in lowering the lower back of the vest as well as the upper back, back of the arm, and back of the neck. In addition, subjective evaluations indicated that a vest with fans attached to the stomach and lower back provided a cool sensation. However, it was confirmed that the design of an auxiliary tool capable of dispersing the weight is necessary since the weight of the fans can interfere with the comfort of wearing the vest.

보호마스크의 내부 부피에 따른 착용 평가

엄란이 ( Ran-i Eom ),박선희 ( Sunhee Park ),박소영 ( Soyoung Park ),이예진 ( Yejin Lee ) 한국의류학회 2020 한국의류학회지 Vol.44 No.4

In this study, protective masks were designed in varying internal volume and analyzed in regards to wearing effect. Masks were measured by surface temperature and subjective wear evaluation. Four experimental masks were created with an increasing distance between the mask center line and nose in increments. The distances were set at 0.0 cm (M0), 2.0 cm (M2), 4.0 cm (M4), and 6.0 cm (M6). The area and volume of each experimental mask was measured and both measurements had a positive correlation with the set distances. Among the experimental masks, M2 was the most breathable. The heat between the face and the mask created by exhalation was able to escape from the mask and provided the highest comfort sensation when worn. Conversely, an internal volume that is too large would decrease its comfort because repetitive breathing deforms the appearance of the mask and adversely affects its fit. Therefore, creating and maintaining the optimal internal volume of the M2 mask is important to achieve maximum thermal sensation and ease of wear.

방한용 마스크 패턴 개발을 위한 시판 마스크 및 안면 형상의 3차원 분석

엄란이(Eom, Ran-i),이예진(Lee, Yejin) 한국생활과학회 2016 한국생활과학회지 Vol.25 No.6

This study aims to examine the patterns and fit of cold protection masks sold in the South Korean market. Using three-dimension analysis, we also assessed the skin changes in the face and adherence using different vowel pronunciations, in order to obtain basic data to develop optimal cold protection masks. Typical mask shapes available in the market were classified into three types. The flat masks without sewing lines had rectangular shapes that were not suitable for the facial shape, and caused pressure in the respiratory areas. The dart masks with darts had the largest inner area and cubic effect around the nose and the jaw. The cutting line masks had sewing lines in the border between the face and the jaw, allowing for respiratory space in the nose, and had a relatively superior fit. According to the findings on face vertical length changes for different vowel pronunciations, there was a noticeable change in the vertical length after pronouncing “A (Korean vowels)”, as compared to the other vowels. After drawing the contour lines of the mask under conditions for both no pronunciation and pronouncing “A” in three-dimensional facial shapes, we modeled the drawing and patterned the results in two dimension. The dart amount increased in the jaw and cheek area when pronouncing “A”. Additionally, the mask area in the face increased, and the area of the jaw decreased. Compared to the existing products, the key feature of the two-dimensional pattern was that the darts were evenly distributed in the nose, jaw, and cheek areas.

구조해석에 기반한 외골격로봇의 설계 및 제작

엄란이(Eom, Ran-i),이예진(Lee, Yejin) 한국생활과학회 2020 한국생활과학회 학술대회 Vol.2020 No.11

보행보조 재활 로봇 착용에 따른 쾌적성 평가

엄란이 ( Ran-i Eom ),이예진 ( Yejin Lee ) 한국의류학회 2020 한국의류학회지 Vol.44 No.6

This study analyzed a subject’s body reaction and subjective sensation when wearing a gait-assistive rehabilitation robot. The research method measured skin and clothing surface temperatures for ‘seating-standing’ and ‘walking in place’ exercises after wearing a gait-assistive rehabilitation robot. In addition, subjective sensation and satisfaction were evaluated on a 7-point Likert scale. The study results showed that the average skin temperature during exercise while wearing the gait-assistive rehabilitation robot was within a comfortable range. However, during the ‘seating-standing’ exercise, the skin temperature was slightly lowered. Additionally, the clothing surface temperature tended to be lower than the pre-exercise temperature after all exercises. The subjective sensation evaluation results showed that the wear comfort of the waist part was low during mobility/activity. In addition, an overall improvement in the wear comfort of the robot is necessary. The short-time movement of wearing and walking in the gait-assistive rehabilitation robot did not interfere with the thermal comfort of the body. However, the robot needs to be ergonomically improved in consideration of the long wearing time along with improved material that to satisfy overall wearing comfort.

20대 후반 성인 여성의 한복 저고리 패턴 개발을 위한 상반신 뒷면의 체형 분석

엄란이(Eom, Ran-i),이예진(Lee, Yejin) 한국생활과학회 2014 한국생활과학회지 Vol.23 No.5

The objective of this study is to classify somatotypes of back-surface shape of women in their late 20s by using 3D body scan data(Size Korea 2010) in order to improve fitness of Hanbok Jeogori. The results were as follows: 1. According to the in-depth survey of the experienced experts interview, most problems related to the fit were caused by the back area of Jeogori. 2. The result of factor analysis indicated that 6 factors were extracted and those factors comprised 82.85% of total variance. 3. According to the cluster analysis, back somatotypes of women in their late 20s were categorized by two types : straight type(54.1%) and bending type(46.9%). The results could be used as the Hanbok Jeogori to improve the fitness of back-surface shape.

20대 후반 여성의 상반신 뒷면 형상에 따른 저고리 원형 개발

엄란이(Eom, Ran-i),이예진(Lee, Yejin) 한국생활과학회 2014 한국생활과학회지 Vol.23 No.6

Even though a Han-bok, or traditional Korean costume, should be inherited since it is invaluable part of our culture, research on Han-bok is scarce. Since the development of a Jeogori pattern, the upper garment of Korean traditional clothes, is done mostly based on the chest size, the design does not completely consider on wearer’s body shape. Moreover, unless made by an expert, trial and error is almost always necessary to improve the fit of the clothes. In this research, a Jeogori pattern was suggested that improves the fit based on the shape of the upper back(straight or bent) of a female in her late 20s who often wears a Han-bok and is comfortable when moving. Using a 3D virtual clothing system, the optimum pattern was selected based on the body shape. The final selection was made, and each subjects tried the garment on to evaluate the comfort when moving, along with its appearance, based on a seven point Likert scale. As a result, for a straight body shape, the optimum ease for the front bust width was 2.5cm, and that for the back bust width was 2.0cm. The optimum center back dart was 1.0cm. The optimum Geodae width was 7.6cm, and the optimum back Geodae point was 2.0cm. For the bent body shape, the optimum ease for the front and back bust was 2.0cm. The optimum Geodae width was 8.4cm, and the optimum back Geodae point was 1.5cm. Furthermore, if the Hwajang slope was set at half of the vertical distance between the laterals of the neck and shoulder, a fitted silhouette appeared, which is preferred nowadays. In the appearance evaluation, the final pattern designed in this research received higher scores than the original design(straight; p<.001, bent; p<.05). The results of the evaluation of the comfort when moving also showed higher scores for the final pattern that was designed.

육군 착용형 로봇을 장착하기 위한 기능성 의복 설계 요소 조사

엄란이 ( Rani Eom ),이예진 ( Yejin Lee ) 한국의류학회 2021 한국의류학회지 Vol.45 No.6

This study aims to derive the design requirements for functional clothing worn with military wearable robots using a survey of people with military experience. Specifically, 982 adult males with military and muscular exercise experience were surveyed for their demands for the clothing worn with wearable robots during military activities. The study showed that it is necessary to develop functional clothing worn inside robots suitable for frequent movements of soldiers to improve their comfort level of wearable robots. The surveyed soldiers indicated that they preferred the top and bottom clothing with high-pressure levels because the upper body felt fatigued during transportation, while both the upper and lower body got exhausted during marches. The survey of design requirements revealed that the participants preferred a top with long sleeves and a bottom with ankle-length leggings in color similar to current military uniforms. We conclude that it is important to design functional clothing worn inside wearable robots in different forms depending on frequent movements, e.g., with differentiated pressures and material placements.