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파워 필름 부착과 인장축 방향 변화에 따른 스포츠웨어용 트리코의 인장특성
최지영,홍경희,Choi, Jiyoung,Hong, Kyunghi 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.4
For the optimum performance of compression sportswear, tensile properties of base tricot and power film should be understood in the viewpoint regarding the use condition. However, it is difficult to predict the tensile properties of film-welded tricot, solely from the tensile information of the single layer of tricot or power film itself, especially when the direction of the power film does not follow the wale or course direction of the tricot, which often occurs in the actual design of performance sportswear. In this study, changes in the tensile properties of tricot, power film and film-welded tricot were investigated as the angle of tensile axis and the direction of welding varies from$0^{\circ}$ to $90^{\circ}$. Stress, initial modulus, and tensile energy were obtained up to 33~50% of the extension level, which is often observed in actual use. Results indicate that the area of power film matched to the tensile axis and width of power exertion is the key factor of tensile properties explaining stress, initial modulus and energy required during extension. Moreover, the results obtained in this study can be utilized in the arrangement of pattern piece for tricot and the positioning of power film to achieve the right support and extension level during body movement.
복부 가열 패드를 부착한 상의 베이스 레이어의 여유량에 따른 인체 반응
이경미,홍경희,이예진,Lee, Gyeongmi,Hong, Kyunghi,Lee, Yejin 한국의류학회 2017 한국의류학회지 Vol.41 No.4
To figure out an appropriate pressure level for a body warming base layer, human responses were observed when the pattern reduction of base layers varied. Under the condition of $2^{\circ}C$, 60% RH, 0.1m/s, ten male subjects participated in the experiment with four sizes of experimental vests where heating pads were attached. The subjective evaluations of the heating vests with different sizes were reported using 7 or 9 point scales. We simultaneously observed chest, abdomen and scapula skin temperatures and microclimate humidity. It was found that the tight pattern as in the case of A or B provided a warmer subjective sensation and skin temperature than C or D; however, there were no differences in skin temperature at the chest. Eventually, the chest temperature decreased after about 30 mins of heating; however, temperature of abdomen increased and indicated that heating with two commercial pads used was inadequate for whole body warming. The pressure sensation of 'tight' was improved after warming the abdomen in a cold environment. Overall, the gaps beyond the original circumference of the abdomen, as in C or D, were not desirable for the local heating of abdomen under the conditions of this experiment where walking was included in the protocol. The experiment garment B with nude waist circumference was the best, and D with the largest ease, was the worst for a comfortable warming vest.
스마트 베이스 레이어 의복의 효과적인 발열모드 설정을 위한 사용자의 자율적 가열행동 연구
이희란,홍경희,이예진,김소영,Lee, Heeran,Hong, Kyunghi,Lee, Yejin,Kim, Soyoung 한국의류학회 2017 한국의류학회지 Vol.41 No.5
There are no specific guidelines on how to control the heat input for the heat generating smart base layer. This study investigated the mode of actuating heat pad attached to the base layer by performing a human wear test in a cold environment. Subjects participating in the test wore T-shirts, jumper and pants on the base layer with heating pads. Skin temperature, total time of heating and the number of switching for the heating mode were observed as the subject controlled the heating mode voluntarily. The comfortable range of skin temperature on the abdomen was larger than on the lower back. The subject felt hot and turned off the switch when the mean skin temperature of the abdomen was $48.8^{\circ}C$ and the lower back was $40.1^{\circ}C$. The total heating time and the number of actuating switching were larger for women than men. The voluntary action of heating for men with high cold sensitivity was significantly different from men with low cold sensitivity. Therefore, it is necessary (depending on gender and cold sensitivity) to set the heating mode differently for the automatic heat control of a future smart base layer.
3차원 데이터를 활용하여 시니어를 대상으로 한 바디쉐이퍼의 보정기능성 평가
김소영 ( Soyoung Kim ),홍경희 ( Kyunghi Hong ),이희란 ( Heeran Lee ) 한국의류산업학회 2019 한국의류산업학회지 Vol.21 No.2
The Fourth Industrial Revolution has increased studies on observing the cross section by overlapping the clothing worn using 3D human body data. However, there is a lack of studies on the effect of pressure clothing that contracts the shape of the human body. Therefore, this study objectively evaluated the shaping functionality of body shapers using 3D scan and 3D data. Two types of commercial body shapers were selected for this study. The nude body and body wearing body shapers were then scanned. A 3D program evaluated the shaping functionality by overlapping the nude state with the body wearing body shaper A and B respectively. As a result, it was found that the effect of body shapers could be adequately observed according to body parts. The smaller body shaper was shown to have superior shaping capability with the abdomen more affected. Analysis of the horizontal cross section indicated that the waist circumference decreased by 6 cm when wearing body shaper A and decreased by 12cm when wearing body shaper B. The volume of the waist part decreased by 8.6% when wearing body shaper A and by 20.4% when wearing body shaper B. Therefore, it is more effective to compare the objective shaping functionality by body parts using the overlapped 3D scanned data rather than using exterior evaluation or length measurement when wearing clothing that contracts the body shape.
박소영 ( Soyoung Park ),홍경희 ( Kyunghi Hong ),이예진 ( Yejin Lee ) 한국의류산업학회 2019 한국의류산업학회지 Vol.21 No.2
This study analyzed the pressure, subjective wearing comfort, and design preference of brassiere shoulder straps among women in their 20s and 40s. Experimental clothing was made by different shoulder strap designs on a brassiere. In the four designs (A-D), the front attachment points of the shoulder straps were the same, but the back attachment points were different. Three of them (E, E1, E2) were of a halter neck design, with different front attachment positions. The pressures of A-D were measured at the position passing through the shoulder line (P1), and E-E2 was measured at the back neck (P2) as well as at P1. Subjective wearing comfort and design preference were rated on a 7-point Likert scale. A was determined to exert the highest pressure at the neck side of the design in the pressure measurement analysis of A-E2, whereas E1 exerted the lowest. E was measured to have the highest pressure among the E-E2 designs, whereas E2 had the lowest. Participants preferred A the most and E the least in regards to the subjective wearing comfort of A-E. Thus, participants deem A to be the most comfortable despite the high strap pressure. However, E was the most favored design, despite its poor wearing comfort. Participants’ subjective impressions of E-E2 were that E2 was the most uncomfortable, but its design was the most preferred. Consumers’ design preferences and subjective impressions of wearing comfort did not match.
박선희 ( Sunhee Park ),홍경희 ( Kyunghi Hong ),이예진 ( Yejin Lee ) 한국의류산업학회 2018 한국의류산업학회지 Vol.20 No.4
This study analyzed the fit-zone of the neck for females in their 60s. We considered the standard body types of females in their 60s and the four body types from the sixth Size Korea. The results of the study were as follows. We could not determine a pattern formula for the neck based on the changes in the body type of females in their 60s. However, the position of the lateral neck point generally showed a significant difference from that of females in their 20s. In the case of the shoulder angle, the point of the shoulder was angled slightly towards the back in all body types. It was also found that the curve of the neck circumference for both the collar and the bodice should have been smoother than what was shown on the 3D shape. The larger the height difference between the point of the back of the neck and the lateral neck point in the 3D shape, the smoother the design should be at the curve of the circumference at the front of the neck. A larger curvature in the front radius of the 3D shape increased the difference in the shape of the curve between the collar and the basic pattern of the bodice. Hence, a more careful design is required for these parts of the pattern. In addition, the more the front neck is bent, the smoother the circumference curve should be in the pattern design at the front of the neck and the collar.