• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2001년도 제33회 춘계학술대회 개최
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• pp.114-114
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• 2001

The thermal and friction characteristics of phenolic resin and model friction materials were investigated with the content of acrylonitrilebutadienerubber(NBR). The thermal characteristics of material was performed by dynamic mechanical thermal analysis and differential scanning calorimetry. The friction and wear characteristics of the material were determined by using friction material testing machine. The results show that with the more content of rubber, the loss modulus of friction material was increased. The friction coefficient and the specific wear rate with various NBR contents were reported.

• 한국의류학회지
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• 제19권1호
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• pp.23-35
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• 1995

The purposes of this study were to investigate the schema of jeans and to investigate the relation between jeans schema and fashion jeans wear. The specific objectives were; 1) to investigate the schema of jeans and the schema of fashion jeans; 2) to investigate the relation between the schema of jeans wear and demographic variables.; 3) to investigate the relation between the schema of fashion jeans and demographic variables; 4) to investigate the difference of the schema of jeans from the schema of fashion Jeans. The moi or findings were: 1) The schema of jeans was composed of 5 factors; casual, comfort, indivisuality, economic, unisex . 2) The schem of fashion jeans was composed of 4 factors; popularity, indivisuality, comfort, casul. 3) The schema of jeans and fashion jeans was affected more by age and marriage than job and educational level. Especially age 30-34 were important parts in market segmentation strategy of jeans. 4) As compared with the schema of jeans and the fashion jeans concept, casual, comfort were important part in the schema of jeans and popularity, indivisuality was important part in the schema of fashion jeans. As the tendency of fashionable of jeans wear, consumers concept of jeans changed to popular, characteristic.

• 한국분말재료학회지
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• 제10권5호
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• pp.325-332
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• 2003

The effect of extrusion temperature on the microstructure and mechanical properties was studied in gas atomized TEX>$Al_{81}Si_{19}$ alloy powders and their extruded bars using SEM, tensile testing and wear testing. The Si particle size of He-gas atomized powder was about 200-800 nm. Each microstructure of the extruded bars with extrusion temperature (400, 450 and 50$0^{\circ}C$) showed a homogeneous distribution of primary Si and eutectic Si particles embedded in the Al matrix and the particle size varied from 0.1 to 5.5 ${\mu}m$. With increasing extrusion temperature from 40$0^{\circ}C$ to 50$0^{\circ}C$, the ultimate tensile strength (UTS) decreased from 282 to 236 ㎫ at 300 K and the specific wear increased at all sliding speeds due to the coarse microstructure. The fracture behavior of failure in tension testing and wear testing was also studied. The UTS of extrudate at 40$0^{\circ}C$ higher than that of 50$0^{\circ}C$ because more fine Si particles in Al matrix of extrudate at 40$0^{\circ}C$ prevented crack to propagate.

• Journal of Welding and Joining
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• 제18권6호
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• pp.102-107
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• 2000

It was attempted to improve the wear resistance of Al alloy under the load condition by making a formation of the thick surface hardening alloy layers. The thick surface hardening alloy layers were formed on 6061 Al alloys overlayed by MIG welding process with WC-12%Co powder addition. Effects of the dispersion of WE-12%Co powders on hardness and wear characteristics of alloys were investigated. The following results were obtained. Most of WE-12%Co powders are dispersed nearly uniform as unmelted particles in the matrix alloy. A part of WC-12%Co powders are melted in the molten pool, and during solidification {TEX}$Al_{9}Co_{2}${/TEX} appeared. With increasing addition of WC-12%Co powders, the hardness and specific wear resistance of the overlay weld alloys increased and reached Hv450 at WC-12%Co powder addition rate of 54g/min. It is considered that excellent wear resistance of the overlayed alloys was due to dispersed WC-12%Co powders and increased 10 times at WC-12%Co powder addition rate of 54 g/min than that of the WC-free overlaying layers.

• 한국표면공학회지
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• 제51권6호
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• pp.381-386
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• 2018

In this study, plasma electrolytic oxidation (PEO) method was used to from anodic oxide films on Al alloy and their resistance and morphological characteristics were investigated as a function of film formation voltage and treatment time. Cross-sectional morphology and composition of the PEO films were analyzed by SEM (Scanning Electron Microscopy) and EDS (Energy Dispersive Spectroscopy). The PEO films showed increased surface roughness and thickness with of film formation voltage and treatment time. The wear resistance was found to be the best for the PEO film formed for 5 min at 500V which is attributed to be denser structure relatively and lower surface roughness.

• 한국의류산업학회지
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• 제17권4호
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• pp.626-634
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• 2015

This study analyzes the wearing and purchasing conditions of outdoor jackets by senior men who are over 50s, and examines product sizes of outdoor jackets in the market. A total of 134 questionnaires and sizing systems (or product size) of 10 outdoor brands were used as analytical data. The results were: a high number of senior men enjoyed hiking as an outdoor activity, with most of them following this activity1-3 times per month and as a preferred personal activity for over 5 years. Most needed outdoor wear suitable for these daily life activities. Outdoor wear satisfaction tends to decrease as people age. The major reason for the dissatisfaction with outdoor wear was price. Senior men aged 50s and 60s emphasize design and color when purchasing outdoor wear; however, men in their 70s considered price a priority. Senior men preferred outdoor brands based on a comfortable fit. An investigation on 10 outdoor brands indicated that they had not designated a specific target customer. A comparison of the product size of outdoor jackets with a similar silhouette indicated some deviations among sizes; however, the age of customers was not considered. The human body tends to shrink in stature and increase in girth as a person ages; consequently, we need to reflect body shape changes and senior's size in outdoor wear.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1996년도 추계학술대회 논문집
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• pp.80-84
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• 1996

This paper aims at reviewing the Possibility application over normal or abnormal, detection used by AE and the wear characteristics of grinding process. In this study, when diamond bur in dentistry with chosen grinding conditions were tuned at grinding. The variation of grinding resistance and hE signal is detected by the use of AE measuring system. The tests are carried out in accordance with diamond burs and workpiece; arcyl and bovine. According to the experiment results, the following can be expected; AE has the possibility to detect the state normality and abnormality. However, the grinding resistance measuring can find it difficult to detect it. It can be accurately excerpted from AE occurrence pattern in contact start point of diamond bur and bovine, grinding condition and derailment point. It is known that AE$\_$rms/ is well compatible with grinding resistance. According to the increase of the material removal rate, the specific energy of the diamond bur is inclined to decrease and the grinding resistance has a tendency to increase.

• 복식문화연구
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• 제19권5호
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• pp.1061-1074
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• 2011

This study was conducted based on a comparative analysis of design-specific features prevalent in the Women's Wear Collection S/S 2011. As the method of this study, the denim styles were classified by various fashion design factors consisting of silhouette, fit, color, and textile fabric, which were extracted from an image database. The properties of denim fabrics associated with each fashion image were investigated to inform fabric development and washing. The results of the study show that the dense and glossy surface of the denim fabric represent a modern trend, which can be achieved by blending lyocell, tencel and rayon or by using different textiles, such as lightweight plain weave and satin instead of twill. For casual look, various washing effects were utilized jean's casual feeling like freedom and activities, while in a modern image, washing effects was restricted. And a glossy textile offers a simple modern look. The Modern image represents a simple H-silhouette and wide or straight fit in bottoms as well. Brightness can be adjusted by washing-induced bleaching. High brightness gives an elegant image, while low brightness makes a casual image. The purpose of this study is to configure a database for the development of design in the growing women's casual wear market. In addition, This study, in which the elements for specific fashion image-making were analyzed, can be used as a reference for developing denim style and fabric.

• 마케팅과학연구
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• 제14권
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• pp.59-80
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• 2004

본 연구는 패션 제품은 사회심리적 속성이 강하다는 특징을 가지고 있기 때문에 Aaker의 일반적인 제품에 적용한 브랜드 개성 차원과는 다른 차별화된 개성을 나타낼 수 있는 연구가 필요하다는 생각에서 출발하였다. 패션 브랜드 이미지에서 추출한 브랜드 개성을 나타낼 수 있는 어휘들을 포함하여, 패션 브랜드 개성 차원을 도출하여 전체적 패션브랜드 개성 차원을 밝혔으며, 또한 패션 제품의 세분화 기준중의 하나인 복종별 (정장, 캐주얼웨어, 스포츠웨어)에 따라 패션 브랜드 개성요인은 어떻게 다르게 도출되는 지를 알아보았다. 이는 패션 제품 카테고리에 맞는 패션브랜드개성 차원을 개발함으로써 차별적 브랜드 마케팅 전략 수립 및 활용을 위한 자료로 사용될 수 있다는 것에 의의를 가질 수 있다 또한 소비자들에게 있어 브랜드 개성차원의 중요성을 알아보기 위하여 각각의 개성 차원들이 브랜드의 선호도 및 구매의도에 어떠한 영향을 미치는지를 살펴보았다. 분석 결과 첫째, 패션 브랜드 개성 차원은 유행/ 혁신성, 성실성, 보편/ 안정성, 전문성의 4 가지 차원으로 도출되었다. 둘째, 복종에 따라 정장에서는 혁신/활동성, 안정성, 전문성, 보편성이, 캐주얼웨어에서는 유행/ 혁신성, 활동성, 성실성, 안정성으로, 스포츠웨어에서는 혁신성, 사교성, 성실성의 개성 차원이 도출되었다. 셋째, 패션 브랜드 개성 요인에 따라 소비자의 브랜드 선호와 구매의도의 영향력은 다르게 나타났다. 패션 브랜드 개성 차원 중에서는 성실성, 보편성, 전문성이 선호도에 유의한 영향을 미쳤고, 정장 브랜드 개성 차원 중에서는 전문성, 캐주얼웨어 브랜드 개성 차원 중에서는 활동성, 스포츠웨어 브랜드 개성 차원 중에서는 성실성이 선호도에 각각 유의한 영향을 미쳤다 또한 전반적인 패션브랜드 개성과 정장 브랜드 개성에서는 선호도와 동일한 차원들이 각각 구매의도에 유의한 영향을 미치는 것으로 나타났으며, 캐주얼웨어 브랜드 개성 차원에서는 유행/ 혁신성, 진실성, 안정성이 스포츠 브랜드 개성 차원에서는 혁신성이 각각 구매의도에 영향을 미치는 것으로 나타났다.

• Tribology and Lubricants
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• 제31권3호
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• pp.95-101
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• 2015

Carbon nanotubes (CNTs) are widely used in polymer composites as filler materials to enhance various characteristics of the composites because of their remarkable mechanical, electrical, and thermal properties. In this study, we investigate the effects of MWCNTs on the electrical and wear characteristics of high-impact polystyrene (HIPS) composites, and compare the results with the effects of carbon black (CB). The HIPS composites are classified as Bare-HIPS, MWCNT-HIPS composites containing 2, 3, 4, and 5 wt% MWCNTs, and CB-HIPS containing 17 wt% CB. Electrical characteristics are evaluated by measuring the surface resistance using a 4-point probe. Wear characteristics are evaluated using the reciprocating wear test, and a chrome steel ball with a curvature of 6.3 mm is used as the counterpart. The results show that the addition of MWCNTs or CB can improve the electrical and wear characteristics of HIPS composites. In the case of MWCNT-HIPS composites, surface resistance, friction coefficient, and specific wear rate decrease as the concentrations of MWCNTs increase. Moreover, the addition of MWCNTs is more effective in improving the electrical and wear characteristics of HIPS composites compared to the addition of CB. To fabricate the HIPS composite with appropriate electrical and wear characteristics, more than 4 wt% MWCNTs is added to HIPS.