• Journal of the Korean Wood Science and Technology
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• 제29권3호
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• pp.14-20
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• 2001

On the bending process, metal-strap plays an important role in dispersing the stress generated in wood. Therefore, the metal-strap has more influence on the property of bentwood materials. The effect of the metal-strap thickness for bentwood was examined. The effect of metal-strap on the bending properties of Korean red pine(Pinus densiflora Sieb. et Zucc.)was investigated in this research. The metal-strap thickness is divided into 4 kinds such as 1.0, 0.8, 0.6, 0.4 mm. The specimens were selected by grain such as annual ring angles, flat grain and half-edge grain specimens. As a result of this study, the bending ability of 1.0, 0.8 mm, thickness of half-edge grain specimens was better than flat grain specimens but the result of 0.6, 0.4 mm were reversed. The bending ability of half-edge grain was better than flat grain and the grade was higher. When the processed specimens were dried, the radius of curvature(ROC) was decreased became drying-stress was not perfectly dispersed. An optimum drying-condition would deminish this phenomenon.

• Current Photovoltaic Research
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• 제11권4호
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• pp.114-117
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• 2023

Transparent Photovoltaic (PV) modules have recently been in the spotlight because they can be applied to buildings and vehicles. However, crystalline silicon (c-Si) solar modules, which account for about 90% of the PV module market, have the disadvantage of applying transparent PV modules due to their unique opacity. Recently, a see-through type PV module using a crystalline silicon solar strap has been developed. However, there is a problem due to a decrease in aesthetics due to the metal ribbon in the center of the see-through type PV module and difficulty bonding the metal ribbon due to the low voltage output of the strap. In this study, to solve this problem, we developed a fabrication process of series connected c-Si solar strap cells using the c-Si solar cells. We succeeded in fabricating a series connected strap with a width of 2-10 mm, and we plan to manufacture an aesthetic see-through type c-Si PV module.

• Journal of Welding and Joining
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• 제30권3호
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• pp.51-56
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• 2012

Different microstructures in the weld zone of a metal structure including a fusion zone and heat affected zone are formed as compared to the base material. Thus, the mechanical properties in the weld zone are different from those in the base material. As the basic data for reliably understanding the structural characteristics of welded nuclear material, the mechanical properties in the weld zone and base material for a Zircaloy-4 strap and Hastelloy${(R)}$-X alloy strap are measured using an instrumented indentation technique (IIT) in this study.

• Journal of the Korean Wood Science and Technology
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• 제30권2호
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• pp.87-94
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• 2002

본 연구는 고주파 가열에 의한 산벚나무, 소태나무, 서어나무, 굴참나무, 박달나무, 고로쇠나무, 피나무, 소나무, 리기다 소나무, 참오동나무의 휨가공성을 평가해 보기 위하여 실시하였다. 본 연구에서 휨가공을 위한 곡율반경은 휨틀의 곡율반경에 의해 4 cm, 6 cm, 10 cm으로 구분하고, 대철의 두께는 0.6 mm와 0.8 mm로 구분하였다. 본 연구결과 소태나무, 서어나무, 박달나무, 고로쇠나무는 모든 곡율반경에서 100% 성공률을 나타내었다. 산벚나무와 굴참나무의 경우 58%와 83%의 성공률을 각각 나타내었다. 피나무와 오동나무의 경우 총 29%와 8%로 매우 불량하게 나타났고, 곡율반경 4 cm에서는 모두 실패로 나타났다. 침엽수재인 소나무와 리기다 소나무는 각각 44%와 56%의 성공률을 나타내었다. 대철의 두께는 휨가공성의 쉽고 어려움보다는 건조시 건조속도에 더 많은 영향을 주는 것으로 나타났다. 건조과정에서 대철두께가 얇을수록 휨가공부재의 건조 속도가 빠른 경향을 나타내었다.

• 패션비즈니스
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• 제27권6호
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• pp.66-84
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• 2023

Handbags are a part of fashion and while their significance and value are increasing, research on this topic is lacking. This study defines handbags and categorizes the materials used for making handbags, sewing methods, expression techniques, and terminologies related to accessories. A total of 1,743 handbags that were released from the Spring 2020 to Fall 2023, Ready-to-Wear collections by 8 selected brands (Hermes, Dior, Fendi, Chanel, Louis Vuitton, Prada, Gucci, and Alexander McQueen), were analyzed. Out of these, 732 unique designs, excluding those with only color variations, were studied. The most common sewing methods were 'Cut, sewing, and edge painting', 'Cylinder arm sewing', 'Cut, edge painting, and sewing', and 'Inverted seam', in that order. Slim strap designs primarily used the 'Cut, sewing, and edge painting' method, whereas the body, especially with narrow and hard leather, was best suited for the 'Cylinder arm sewing machine'. For expression techniques, the most frequently used methods were 'Quilting', 'Metal Eyelet', 'Embossing', 'Printing', 'Punching', and 'Weaving', respectively. The characteristics of each brand's production methods, expression techniques, and accessories were as follows: First, the exposure of logos and monograms is prominent. Unlike clothing, handbags often prominently feature the brand's logo or monogram. Second, signature quilting is a prominent feature. Quilting effectively conveys the brand's signature style, providing cushioning, volume, and pattern effects. Third, sustainable development is a growing trend. Brands are increasingly applying eco-friendly and socially responsible designs.

• 헤리티지:역사와 과학
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• 제54권1호
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• pp.4-17
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• 2021

본 연구는 창녕 교동과 송현동 고분 15호분에서 출토된 마구류인 입주부운주와 행엽 18건 19점을 분석하였다. 입주부운주와 행엽은 마구 장신구로 실용성보다는 신분 과시의 목적으로 사용되었는데 가야문화권 내 모든 고분에서 출토되고 있으므로 각 문화권 제작 기법 및 원료 산지를 비교할 수 있는 유물로 생각된다. 본 연구에서는 입주부운주와 행엽의 부위에 따른 제작 기법 및 원료 산지를 확인하여 5~6세기로 추정되는 비화가야의 금제 유물 제작 기술에 대해 연구하고자 하였다. 연구 결과 입주부운주는 순구리로 제작되었으며, 표면에 금(Au)·은(Ag)·수은(Hg) 등이 함께 검출되어 수은 아말감법으로 도금하였음이 확인된다. 어린문, 편원어미형 행엽의 분석 결과 바탕층(철)-중간층(구리)-도금층(금·은)이 확인되며, 구리(Cu)와 표면 금(Au)·은(Ag) 도금층은 수은 아말감법으로 도금한 철지금동판장 기법으로 확인된다. 심엽형 행엽은 바탕 금속에서는 철(Fe), 표면층에서는 은(Ag)이 주성분으로 검출되는 것으로 보아 철지은장 기법으로 제작되었으며, 바탕 금속과 도금층은 원두정을 이용해 고정한 것으로 판단된다. 창녕에서 출토된 마구류 19점의 원료 산지는 한반도 납동위원소비 분포도와 마부치히사오(馬淵久夫), 중국 납동위원소비 데이터를 통해 확인한 결과 보요(2점) 및 어린문 행엽(1점)은 한반도 남부 태백산분지의 구리 광석을 사용하였으며, 나머지 16점은 중국의 구리 광석을 원료로 사용한 것으로 추정된다.

• 복식문화연구
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• 제26권4호
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• pp.632-648
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• 2018

This study aims to contribute to the development of sports wearables. It was conducted by a convergence team of professionals in the fashion industry, kinesiology and sports studies, and computer science and engineering. The purpose of the current study was to design and develop a fabric-type fitness band for a sensor to measure acceleration during jump rope exercises. Computer science and engineering professionals developed the Arduino board and sensor, kinesiology and sports studies provided the necessary exercise protocol, and the fashion industry professionals developed the band. First, a fitness band preference survey was completed by men and women between the ages of 20 and 50. Typical uses of the band included tracking exercise amount as measured by the number of steps taken and calories burned. Strap watch closure, a single color and achromatic color, and soft and smooth touch materials were preferred as band design. Second, two fabric-type fitness bands were designed and developed. Design 1 had a 3-dimensional pocket for the sensor, bright blue color, and stretch binding around the edges and for a loop. Design 2 had a flat pocket for the sensor, achromatic color, mesh binding around the edges and two metal loops. Both designs had Velcro as a closure. Third, wear testing of both bands with the sensor were conducted of 15 women in their 20s. They wore the bands during jump rope exercises. Both bands generally satisfied the participants. The Design 2 band was slightly more satisfying than the Design 1 band.

• 한국의류산업학회지
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• 제5권3호
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• pp.299-303
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• 2003

Some of historical textiles were analyzed to identify the imprinted textures on the metal remains of Haengyeup(a horse strap pendant) and Doja (a knife), which were excavated in the ruins of Hwangsung-dong, Kyungju city in the fifth century and textiles imprinted on the human bones that were excavated in the Pungnae 4th Area, Namyangju county in the sixteenth century. The results analyzed arc as follows ; It was confirmed that the imprinted textures of Haengyeup and Doja are white ramie since the structural characteristics of cellulosic bast fibers, partially projected long oval cross sections with large lumens and the imprinted textures of human bones are silk fabrics since the triangular cross sections of fibroin is showed. All of the textiles were designed in plain weaves. In the case of weaving yarns, the warp threads were thicker than the weft threads, that is, the imprinted textures of Haengyeup were measured by 1.35 mm for warp and 1.21 mm for weft, and the Doja by 1.16mm for warp and 1.11 mm for weft. In connection with the direction of the yarn twist, the Z-twist were observed in the imprinted textures of human bones, whereas it presented the S-twist in the case of Haengyeup and Doja. The warp yarns were mostly harder twisted than the weft yarns on the amounts of twist, that is, it was observed that the case of Haengyeup were amounted to 0.33 twists per centimeter for warp yarns and 0.25 twists per centimeter for weft yarns. Also it was showed 0.32 twists per centimeter for warp yarns and 0.26 twists per centimeter in the case of the textures of human bones. On the fabric counts, it was showed that the finer the yarns the higher the densities since it were $4.3{\times}5.1$ threads per sqaure centimeters and $7.6{\times}7.1$ threads per sqaure centimeters each in the case of Haengyeup and Doja, whereas it was $18.2{\times}33.7$ threads per sqaure centimeters in the case of the textures of human bones.

• 박물관보존과학
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• 제18권
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• pp.1-18
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• 2017

본 연구에서는 경주 금관총에서 출토된 비단벌레장식 마구류의 제작 기법에 대해 비단벌레 날개를 중심으로 조사하였다. 비단벌레 날개는 상단 골격부를 제거한 후 금동투조판 아래에 놓여 장식으로 사용되었으며, 부착성 증대를 위한 가공 흔적 등은 확인되지 않는다. 금관총에서 출토된 비단벌레장식 마구류는 안교, 등자, 행엽, 죽제장니가 있으나 등자를 제외한 마구류는 대부분 파손·유실되어 전체적인 제작방법을 확인하는데 어려움이 있었다. 비단벌레 날개의 고정 방법은 바탕재에 따라 달라지며, 목심을 바탕재로 사용하는 등자와 안교는 소형정을 사용하고 죽제장니나 철제를 바탕재로 사용하는 유물은 옻칠을 사용하여 고정 후 금동투조판으로 압착하여 결합한 것으로 확인된다.