• 패션비즈니스
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• 제16권3호
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• pp.13-31
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• 2012

The purpose of the study was to analyze the work clothes' clothing comfort and wearer mobility of painting workers with the consideration of the work environment features in the machine and shipbuilding industries in South Korea. A questionnaire survey was conducted for the study, which consisted of questions on the clothing comfort and wearer mobility aspects of painting work clothes by clothes types and body parts. The work clothes' clothing comfort and wearer mobility levels were scaled in 5 points i.e. 1(: very tight/very uncomfortable) to 5(: very slack/very comfortable). The painting work environmental hazardous features were considered as high impact levels of workplace temperature, oxygen deficiency, organic solvent, toxic gas factors while metal fragment factor only impacts 'low' in the painting processes with the findings throughout this study. Since the painting work consisted of surface washing and the spray and touch-up painting processes, which was carried out in an outdoor work place, the painting work clothes should meet high performance of waterproofing from the painting material and air permeability specially in summer as well as thermal performance in winter. The subjects painting workers' assessment of the existing work clothes' clothing oppression was in the levels between 3 (i.e. moderate) and 4 (i.e. comfortable) in a range of 1 to 5 points. The existing painting work clothes' wearer mobility was evaluated 'very uncomfortable' in all work clothes parts, especially, armhole length, biacromial breadth, sleeve length of the jumper; and body rise, waist, hip, thigh and knee circumferences of the pants.

• 한국의류산업학회지
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• 제8권5호
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• pp.597-603
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• 2006

This study was aimed to find out the problems of wearing flame-proof clothing and to analytically assess functional working-clothes, thus to propose a new design. We carried out a questionnaire with workers in the field and evaluated the facility for wearing, the sensation of wearing and clothing microclimate in the environmental chamber. We found out the problems were in the parts of neck, armpits, armhole, sleeve, crotch and suspenders. Thermal sensation, wet sensation and comfort sensations were evaluated to be 'hot', 'wet' and near to discomfort', respectively. Therefore, improvement of movement and air permeability is needed. If we can add gusset on armpit for air permeability, this gusset will enable to enlarge the surface in armpit area and finally give a movement efficiency. We suggested several new partly modified design for flame-proof clothing which can be applied to other protective clothing for improvement. This must be further considered in the ergonomic evaluation of new proposed functional working-clothes as well as in the suggestion of design.

• 한국의류학회지
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• 제36권9호
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• pp.928-939
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• 2012

This study evaluates wear comforts of water-vapor-permeable (WVP) garments through a measurement of various parameters such as skin and rectal temperatures, microclimate between skin and clothing, sweat rate, and subjective sensations (thermal, wet and comfort sensations) to correlate the physiological responses of the human body with its comfort feeling. Wear comfort during a specific exercise on a treadmill in a climatic chamber (temperature T = $20{\pm}0.5^{\circ}C$ and relative humidity H = $50{\pm}10%$) were studied using eight men wearing seven sportswear outfits (a long sleeve shirts and a long pants) made with seven different WVP fabrics. A comfort sensation was found to be highly correlated with skin T (p<.001), microclimate (T and H) between skin and clothing (p<.001) and sweat rate (p<.05). A regression model correlating comfort sensations and physiological responses obtained from wearer trials could be established: Y = 14.167 - 0.362 ${\times}$ X1 + 0.424 ${\times}$ X2 - 0.238 ${\times}$ X3 - 0.561 ${\times}$ X4 + 0.253 ${\times}$ X5 + 0.214 ${\times}$ X6 - 0.393 ${\times}$ X7 + 0.023 ${\times}$ X8 - 0.043 ${\times}$ X9. (Y = comfort sensation, X1 = forehead skin T, X2 = forearm skin T, X3 = hand skin T, X4 = thigh skin T, X5 = T of chest microclimate, X6 = T of thigh microclimate, X7 = chest sweat rate, X8 = H of back microclimate, X9 = H of thigh microclimate. The regression model obtained in this work can be used by manufacturers to objectively estimate the comfort sensation of sportswear before it is introduced to the consumer market. This study provides salient information to sportswear manufacturers and sportswear consumers.

• 수산해양기술연구
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• 제21권2호
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• pp.157-166
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• 1985

가변 압축비 기관(C. F. R.)에 ionization gap probe를 피스톤 및 실린터 헤드 sleeve에 설치하여 화염거동에 대하여 실험한 결과는 다음과 같다. 1) 혼합연료에서 화염전파속도는 메타놀 함량에 따라 증가한다. 2) 혼합연료에서 메타놀 percent가 증가하면 에너지 소모비 (Btu/HP-hr)가 감소하여 열효율은 증가한다. 3) 당량비가 일정하면 평균유효압력은 메타놀 량이 증가할수록 감소한다. 4) 순수한 가솔린 및 혼합연료는 점화진각이 클수록 NO 하(X) 방출량은 증가하고 희박 혼합기 영역에서 NO 하(X) 방출량은 최대가 된다. 또 RG50/M40/THF10/W1의 연료에서는 당량비가 0.95이하에서는 당양비가 낮을수록, 점화진각이 높을수록 NO 하(X) 방출량은 증가하고, 0.95 이상에서는 당량비와 점화진각이 클수록 방출량은 감소한다. 5) CO, HC의 최소값은 메타놀 함유량이 높을수록 감소한다.

• 복식
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• 제57권8호
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• pp.14-23
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• 2007

The purpose of this study was to investigate the present condition of cold protective clothing for mailman, to improve its design in movement, fitness, and other functions, and supply basic data for its performance evaluation. The results are as follows : The 46.60% of those questioned did not satisfy current clod protective clothing fer mailman. Especially, they considered dissatisfactory in properties such as waterproof, comfort, activity, and sweat absorption. The newly developed cold protective clothing is two-piece style composed of jacket and pants. Both jacket and pants are composed of inner and outer clothing individually. In both jacket and pants, their outer clothing's material was waterproof, windproof, and breathable shell fabric on which PTFE film laminated and their inner clothing's material was 100% polyester Polar polis to have better insulation property. The jacket has attachable cap which can be used as rain gear and set-in sleeve with stand collar. It also had big outside patch pockets and side seam pockets to ensure enough storage space. The pants have knee pads to give free movement to knees and slant side pockets. Inner clothing of both jacket and pants can be worn during working inside without out clothing. Insulation of the newly developed cold protective clothing was not better than current one except right hand, left hand and left foo. It is considered that is because thickness of material is the most important factor to influence insulation.

• 한국의류학회지
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• 제46권5호
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• pp.836-847
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• 2022

This study establishes basic data for the development of a new Chemical, Biological, and Radioactive (CBR) protective clothing by selecting the ventilation position to optimize thermal comfort on the basis of the opening and closing of each part. Participants were eight men in their 20s who had previously worn CBR protective clothing. After vigorous exercise and perspiration, the microclimate of the clothing and skin temperature was measured. Results revealed that when the ventilation zipper was opened after exercising, the skin and clothing microclimate temperatures, which had increased during the exercise, decreased in the chest and shoulder blade regions. The clothing microclimate humidity decreased in the chest area. The change was greatest in the chest region; the skin temperature decreased by 0.2℃, the clothing microclimate temperature by 2.7℃, and the clothing microclimate humidity by 3.2%RH through ventilation. Thus, the opening that allows the exchange of accumulated heat and moisture while wearing the CBR protective clothing is efficient.

• 대한토목학회논문집
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• 제31권1C호
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• pp.29-38
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• 2011

소형 콘은 해상도가 뛰어나 국부영역의 탐지를 위하여 다양하게 활용되고있다. 소형 콘은 변형률계 부착 면적이 부족하여 half-bridge 형태로 회로를 구성하고 있으며, 이는 주변온도 변화에 의하여 민감하게 반응하는 것으로 알려져있다. 본 논문의 목적은 이러한 온도영향을 해소하기 위하여 소형 콘의 온도보상 기법에 관한 연구를 수행하는 것이다. 본 연구를 수행하기 위하여 직경과 길이가 각각 15mm 그리고 56mm인 소형 콘을 개발하였다. 로드셀은 온도변화만을 반영할 수 있는 공간을 확보하기 위하여 후면으로 54mm 연장하여 제작되었다. 온도보상회로는 스트레인 게이지를 선단저항 부분, 주면마찰 부분 그리고 연장한 로드셀에 부착하여 소형 콘 내에서 휘트스톤 브리지(Wheatstone bridge) 회로를 구성하였다. 소형 콘의 일반적 회로구성인 half-bridge도 내부에 함께 구성하여 상호간의 결과값을 비교 및 고찰하였다. 여름과 겨울의 계절적인 온도변화에 따라 측정값의 오차를 검증하기 위하여 계절적 온도 변화 실험을 수행하였다. 또한 지반다짐 실험으로 지반의 상대밀도를 증가시켜 관입 시 주변 온도변화에 따라 측정값 변화도 관찰하였다. 측정결과 온도보상회로를 이용하여 측정한 값은 half-bridge 회로로 측정한 값과 차이를 보였으며, 더욱 안정화되고 이상적인 경향을 보였다. 본 논문은 소형 콘 사용시 온 도 영향에 대한 문제를 해소하고 더욱 신뢰성 높은 측정값을 획득할 수 있는 기법에 대하여 제시하였다.