• Journal of the Korean Professional Engineers Association
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• v.21 no.4
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• pp.6-11
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• 1988

The study on the progress of automatic machining system has been active centering at the CNC machine tools recently to lead the applied production technology like unmaned machining to the practical level, and to make these application more efficient, they require detective method for tool wear and breakage while machining. In this study chiefly on turning, first derive cutting force about the tool surface by the cutting resistant sensor and with which change into electric signal and compare with the standards to make the tool life detection system to let know the tool life and study its application; the cutting resistance detected by the cutting resistant sensor has increased to the level of standards, the measuring system which can decide whether we change tools on the basis of comperative circuit is shown to be very reliable model for cutting tool life detection system.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.37.5-37
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• 2002

$\textbullet$ Wearable I/O Devices relieve the restriction of working space to the worker. $\textbullet$ And They permit very active work achievement to the worker. $\textbullet$ But, current Wearable I/O Devices still have some controversial points. $\textbullet$ The worker needs serie system operations to wear and take off devices. $\textbullet$ Also, it is not easy to change any device which is currently used when the worker uses some devices. $\textbullet$ So, we propose the Compact Wireless Communication Module to solve these problem. $\textbullet$ For that purpose, we implemented the proposed module, and proved the efficiency and convenience.

• Applied Microscopy
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• v.45 no.2
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• pp.52-57
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• 2015

Bulk metallic glass (BMG) shows higth strength, high elastic limit, corrosion resistance and good wear resistance and soft magnetic properties and has been considering as a candidate for new structural materials. But they show limited macroscopic plasticity and lack of tensile ductility due to highly localized shear deformation, which should be solved for real structural application. In this paper researches on the enhancement of plasticity of BMG were reviewed briefly. Introducing heterogeneous structure in glass is effective to induce more shear transformation zones (STZs) active for multiple shear band initiation and also to block the propagating shear band. Several methods such as BMG alloy design for high Poisson's ratio, addition of alloying element having positive heat of mixing, pre-straining BMG and variety of BMG composites have been developed for homogenous distribution of locally weak region, where local strain can be initiated. Therefore enhancement of plasticity of BMG is normally accompanied with some penalty of strength loss.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2003.11a
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• pp.185-190
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• 2003

Synchronizer ring performance is strictly required in order to extend manual transmission oil drain interval. Zn type additive, which is used as dispersant and anti-wear additive instead of SP additives in manual transmission oil, is applied to improve Synchronizing function and durability. But only Zn type additive is not suitable for high torque transmission because it has not good extreme pressure characteristics. We research on the synchronizer friction and extreme pressure properties in according to change additive types. As a result, it was found that the use of non-active extreme pressure and friction modifier additives has benefit in the improvement of synchronizer friction characteristics and durability.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2002.11a
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• pp.153-156
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• 2002

본 연구는 스포츠웨어용 나일론 직물의 소리가 심한 소음으로 작용하여 착용자 뿐 만 아니라 상대방에게도 불쾌함을 주므로 이를 줄이기 위한 방향 모색의 하나로, 소리 자극에 대한 생리반응 중 근전도(Electrodiagnosis)와 소리에 대한 주관적 감성을 측정하여 의복 소음이 미치는 영향을 고찰하였다. 근전도는 상완이두근과 전완근에서 측정하였고, 주관적 평가는 FMME(Free Modulus Magnitude Estimation)를 이용하여 실시하였다. 직물 소리에 대한 상완이두근의 근전도 값은 직물별로 유의한 차이를 보였으나, 전완근에서는 대부분 비슷한 값을 보였다. 직물의 소리가 부드럽고 유쾌할수록 근전도값은 무자극시보다 감소하는 경향을 보였으나, 직물의 소리가 시끄럽고 날카로울수록 근전도값은 무자극시보다 증가하였다. 이로서, 직물의 소리는 상완이두근의 근전도 값에만 영향을 미치며, 직물 소음의 크기, 날카로움 등과 정적인 관계를 보이는 것을 볼 수 있었다.

• Journal of Science of Art and Design
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• v.2
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• pp.90-127
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• 2000

The Paper aims to survey and analyze the meaning 'Absence of body' from clothes as non-verbal communication medium. Two types of absence of body from clothes are clothes as object because of removing body, and flattened colthes to deny the body form. In results of analysis, 1)the confrontation of male/female was represented by positive/negative, active/passive, present/absent. 2) male/female means social/private, body/clothing, relevant/irrelevant, subjective/additive. 3) one/numbers, simple/various, limited/free present the various way of waering. 4) tradition/contemporary is expressed by materials 5) enlarged clothes expresses the cynical attitude about body 6) inside/outside , one dress/layered dress suggest new concept to wear against traditional way of wearing.

• Smart Structures and Systems
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• v.20 no.6
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• pp.759-767
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• 2017

Wear and aging associated damage is a severe problem for safety and maintenance of engineering structures. To acquire structural operational state and provide warning about different types of damage, research on damage identification has gained increasing popularity in recent years. Among various damage identification methods, the Lamb wave-based methods have shown promising suitability and potential for damage identification of plate-type structures. In this paper, a comprehensive study was presented to elaborate four remarkable aspects regarding the Lamb wave-based damage identification method for plate-type structures, including wave velocity, signal denoising, image reconstruction, and sensor layout. Conclusions and path forward were summarized and classified serving as a starting point for research and application in this area.

• Journal of the Korean Society of Costume
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• v.39
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• pp.125-138
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• 1998

In order to help apparel manufactures and marketers to promote apparel products more efficiently, and aid them in instilling brand names or brand images more distinctively in the minds of target consumers, it is the intent of this study (1) to investigate on the high-school girls brand loyalty and the brand discernment, self image(product image), and the buying behavior of casual wear. The subjects were 532 female high school students selected from the four high school in Seoul. The data were collected by self-admin-istered questionnaires. The data were analyzed by frequency, percentage, T-test, x2-test, and correspondence analysis. (1) 29.1% of the female students were cat-egorized as the brand loyalty group that was smaller than the non-brand loyalty group(70.9%). (2) In identifying the relationship between the demographic factors and the brand loyalty, the monthly household income and the month-ly personnel expenses were statistically significant. Namely, higher household income and the monthly personnel expenses were statistically significant. Namely, higher household income and the monthly personnel expenses there were, higher the brand loyalty was revealed. (3) The power of discernment was statistically significant according to the brand loyalty. That is, the brand loyalty group was more outstanding than latest fashion brands, the high-price brands, and the better-style brands in terms of design, color, and fabric. (4) The self image was also statistically significant according to the brand loyalty, Wher-eas the brand loyalty group preferred the unique, high-quality, sexy, and active self-images, non-brand loylty group revealed to prefer the non-noticeable and feminine self-images. The findings of this study will assist apparel manufactures and marketers in better identifying the target market, and in subsequently adjusting their products, brand image, and promotional activities in order to reach the target market more efficiently.

• Journal of the Korean Society of Clothing and Textiles
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• v.39 no.4
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• pp.517-528
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• 2015

This study investigates actual wearing conditions and satisfaction based on qualitative research for rifle shooting clothing. The survey was conducted in two ways: in-depth interviews of 4 rifle shooting experts and subjective questionnaires for 18 active rifle shooters. They agreed on the importance of rifle shooting wear to minimize body sway and contribute to a balanced body posture. Most rifle shooters purchase made-to-measure rifle shooting clothing at a domestic store, but the clothing often needs extra adjustments due to an uncomfortable fit. Current fabric for rifle shooting clothing consists of a cotton canvas with a polyester mix; however, rifle shooters are unsatisfied with its stiffness in hot and wet conditions. Due to the specific fabric features, rifle shooting clothing should not be washed despite year-round use that represents another point of dissatisfaction. Rifle shooters always wear specially designed underclothes to improve shooting skills and comfort sensation. In conclusion, it is necessary to develop well fitted and comfort rifle shooting clothing that could improve shooters skills based upon this study.

• Journal of the Korean Home Economics Association
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• v.43 no.8 s.210
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• pp.69-81
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• 2005

The purpose of this study is to design high school boy's uniforms, which fit well and express the traditional aesthetics of Korean clothing. Korean traditional clothing is getting ground for the use as active wear as well as formal wear such as wedding or special holiday clothing. This is partly due to the introduction of western clothing in Korea because of the practical nature of this type of clothing. This study was carried out as follows: 1. First, 197 high school boys from 5 different high schools were surveyed. All of these schools use Korean style school uniforms. The survey asked the students about their satisfaction with the current designs, problems and design preferences for Korean style high school uniforms. In general, the boys are not satisfied with the aesthetic and fashionable aspects of their uniforms. 2. The second survey dealt with design preferences from a variety of design options of Korean-style school uniforms. The design options were presented to the students as in the form of 10 different types jackets and 6 different types of pants. Using the results of the second survey as a guideline, the designs of Korean style school uniforms were developed. 3. In order to make the test garments, a block bodice pattern for the Korean style school uniforms was developed. Using the developed bodice block pattern, 6 designs were made of wool. The 6 test designs consisted of 3 different types of jackets and 3 different types of pants. 4. Incorporating the most preferred design features, school boy Korean style school uniform designs were developed. The characteristics of the design include neck line opening and its finishing, AH and sleeve shape, embroidered traditional patterns and fastenings. In this study we were able to develop comfortable clothing, which expressed the traditional aesthetics of Korean clothing.