슈트용 직물의 스치는 소리와 물성간의 관계

조길수 ( Gilsoo Cho ),이은주 ( Eunjou Yi ) 한국감성과학회 1999 춘계학술대회 Vol.1999 No.-

This study was carried out to investigate the relationship between sound color and physical propertiessuiting fabrics. Rustling sounds of 23 suiting fabrics by sound generator developed for this study were recorded and analysed through FFT analysis. Three sound color factor(ΔL Δf. LPT) were obtained. Physical properties of specimens were measured by KES-FB. Level range(L) showed significant correlation with tensile resilience(RT) and thickness (T). Frequency difference(Δf) showed significant correlation with tensile linearity(LT), shear properties(G, 2HG, 2HG5), compressional energy(WC), and weight(W). Total sound pressure (LPT) showed significant correlation with elongation at maximum load (EM), tensile linearity(LY), and tesile energy(WT). By stepwise regression LPT was found to be explained by EM, MIU, RC, LT significantly.

감성의류 연구의 현황과 방법론

조길수(Gilsoo Cho) 한국생활환경학회 2002 한국생활환경학회지 Vol.9 No.3

직물의 소리가 주관적 감각에 미치는 영향

조길수 ( Gilsoo Cho ),( John G. Casali ) 한국감성과학회 1999 춘계학술대회 Vol.1999 No.-

This study was carried out to evaluate human subjective sensation for fabric rustling sounds and predict the sensation with quantified sound color measurements and mechanical properties of fabrics. Thirty subjects at Virginia Tech were asked to evaluate seven sound sensation descriptors by semantic differential scale after hearing eight different fabric sounds. Sound measurements were quantified by calculating total sound pressure(LPT), level range(ΔL), and frequency difference (Δf). Mechanical properties of fabrics were measured by KES-FB. Subjective sensation for fabric sound showed significant differences among fabrics except clearness sensation. Subjective sensation predicted by sound measurements showed well fitted regression equation with ΔL and LPT> Sharpness, clearness, and highness were significantly released with mechanical properties of fabrics. All sensation was found to be predicted with sound measurements LPT and Δf and mechanical properties such as LT, 2HG5, WC, T, and W.

신체 동작을 모사한 직물마찰음 발생장치의 개발 및 이를 이용한 직물 마찰음 평가

이규린,이유진,박해리,조길수,Lee, Kyulin,Lee, Eugene,Park, Haeli,Cho, Gilsoo 한국섬유공학회 2013 한국섬유공학회지 Vol.50 No.4

To investigate the sound generated by fabric friction, which simulates real wear conditions, a 'fabric friction sound generator', which simulates body movement was developed. Fabric sounds from three specimens were generated by the fabric sound simulator and recorded using high performance microphones. Physical sound parameters such as sound pressure level (SPL), level range (${\Delta}L$), and frequency difference (${\Delta}f$) were calculated for the fabrics. All the physical parameters (SPL, ${\Delta}L$, and ${\Delta}f$) of fabric sounds generated by the fourth-generation apparatus had lower values compared to the values obtained with the third-generation apparatus. Unlike the third-generation system, which generates fabric sounds by reciprocating friction, the fourth-generation system was designed with silicon-based arm-and-leg shaped abraders so that the levels of noise and fabric sounds generated were lower at all speeds.

웨어러블 생체신호 모니터링을 위한 스마트텍스타일센서의 분류 및 고찰

장은지 ( Eunji Jang ),조길수 ( Gilsoo Cho ) 한국의류산업학회 2019 한국의류산업학회지 Vol.21 No.6

This review paper deals with materials, classification, and a current article investigation on smart textile sensors for wearable vital signs monitoring (WVSM). Smart textile sensors can lose electrical conductivity during vital signs monitoring when applying them to clothing. Because they should have to endure severe conditions (bending, folding, and distortion) when wearing. Imparting electrical conductivity for application is a critical consideration when manufacturing smart textile sensors. Smart textile sensors fabricate by utilizing electro-conductive materials such as metals, allotrope of carbon, and intrinsically conductive polymers (ICPs). It classifies as performance level, fabric structure, intrinsic/extrinsic modification, and sensing mechanism. The classification of smart textile sensors by sensing mechanism includes pressure/force sensors, strain sensors, electrodes, optical sensors, biosensors, and temperature/humidity sensors. In the previous study, pressure/force sensors perform well despite the small capacitance changes of 1-2 pF. Strain sensors work reliably at 1 kΩ/cm or lower. Electrodes require an electrical resistance of less than 10 Ω/cm. Optical sensors using plastic optical fibers (POF) coupled with light sources need light in-coupling efficiency values that are over 40%. Biosensors can quantify by wicking rate and/or colorimetry as the reactivity between the bioreceptor and transducer. Temperature/humidity sensors require actuating triggers that show the flap opening of shape memory polymer or with a color-changing time of thermochromic pigment lower than 17 seconds.

Care Performance and Wear Comfort of Smart Medical Glove System with Transcutaneous Electrical Nerve Stimulator for the Hypertensive

Ryang-Hee Kim(김량희),Gilsoo Cho(조길수),Kee-Sam Jeong(정기삼) 한국생활과학회 2012 한국생활과학회 학술대회 Vol.2012 No.11

스크린 프린팅을 이용한 PEDOT:PSS/AgNW 기반 전기전도성 스마트 텍스타일의제조 및 신호전달선으로의 적용

강희은 ( Heeeun Kang ),이유진 ( Eugene Lee ),조길수 ( Gilsoo Cho ) 한국의류산업학회 2021 한국의류산업학회지 Vol.23 No.4

In this study, electroconductive textiles were developed by screen-printing technology using a complex solution of PEDOT:PSS/AgNW on a polylactic acid nanofiber web. A performance evaluation was then conducted to utilize this electroconductive textile as a signal transmission line. To obtain highly conductive electroconductive textiles, this study sought to determine the optimal mixing ratio of PEDOT:PSS/AgNW. Sheet resistance was measured to evaluate the electrical properties of electroconductive textiles, Finite element-scanning electron microscopy images were then used to examine surface properties, and Fourier transform-infrared analysis was performed to evaluate chemical properties. The signal waveform characteristics of the electroconductive textile were observed using a signal generator and an oscilloscope. Radio-frequency characteristics were then evaluated to confirm frequency range, and bending tests were conducted to evaluate durability. The signal transmission lines produced in this study had a sheet resistance value of 3.30 ?/sq, and signal transmission performance was evaluated to observe that the input value of the voltage was nearly identical to the output value. In addition, S21 analysis confirmed that it was available in the frequency domain up to 35 MHz. The performances of the transmission lines were maintained after 100, 200, 500, and 1,000 repeated bending tests, and sufficient durability was confirmed.

유연제 사용에 따른 직물의 쾌적감 및 방염성 변화

조길수,조정숙,김영애 연세대학교 생활과학연구소 1992 生活科學論集 Vol.6 No.-

The purpose of this study was to investigate the effect of repeated launderings with fabric softener on the comfort properties of fabrics, and to examine how the flame retardant(FR) finish interacts with fabric softener. Futhermore, the comfort properties of cotton fabrics were compared with cotton blended fabrics. Specimens were FR treated and untreated cotton and cotton/polyester blended fabrics. Each specimen was laundered repeatedly 30 times with and without fabricsofteners. The comfort properties and flame retardency of laundered specimens were measured after 1, 5 and 30 launderings including specimens which were not laundered. Comfort properties included were fabric stiffness , water absorption and wickability. Fabric stiffness was measured using the Cantilever Bending Method described in KS K 0539. Fabric absorption rate was measured using the Drop Absorption Method described in KS K 0585. Wickabality was measured using Longitudinal Strip Test. Flame retardancy was measured using the Vertical Strip Method described in AATCC Test Method-79. The results obtained from this study were as follows : (1) The stiffness both of the untreated and the flame retardant finished cotton fabrics decreased when laundered with fabric softener as in the case of P/C blend fabrics' stiffness. (2) The wickability of the untreated cotton fabrics increased when laundered with fabric softeners. The FR finish increased the absorption rate and wickability of the cotton fabrics. The absorption rate and wickability ofthe untreated and FR finished P/C blended fabrics increased when laundered with fabrics softeners. (3) The flame retardancy of the FR finished cotton fabrics was higher than FR-unfinished cotton fabrics. The fabric softeners decreased the flame retardancy of cotton fabrics and increased that of the P/C blended fabrics.

열처리가 폴리에스테르 필라멘트사의 인장성질과 염색성에 미치는 영향

조길수,최종명 연세대학교 생활과학연구소 1988 生活科學論集 Vol.2 No.-

The purpose of this study was to investigate the effect of heat treatment conditions on the tenacity, elongation and dyeability of polyester filament yarns. Heat treatment was done at various temperatures (150, 170, 190, 210, 230℃) for predetermined periods (3, 15, 30 minutes) at constant length condition in silicone oil bath. Tensile properties were measured by the CRE type machines and the dye uptakes of the specimens were evaluated spectrophotometrically at a 420 nm wave length. The dye used was the disperse yellow 42 type. Breaking tenacity of the untreated specimen was 4.1g/d, and the heat treatment increased the tenacity of the specimen. Specimens treated for 3 minutes showed an increasing tendency of tenacity as the treatment temperature increased. Specimens treated for 15 and 30 minutes also showed an increasing tendency up to 190℃. they showed a decreasing tendency at 210℃ and over. Elongation at break of the untreated specimen was 25.1%, and the heat treatment lowered the elongation. Specimens treated for 3 minutes showed an increasing tendency and those for 15 and 30 minutes showed a decreasing tendency of elongation. At higher temteratures a shorter time was effective because elongation was less reduced. Dye uptake of untreated specimen was 5.47 mg of dye/g of dyed fiber. The uptakes of the treated specimens fell as the treatment temperature up to 190∼210℃, then the uptakes rose at higher temperatures. As the treatment time increased the specimens' dyeability decreased.

스판덱스 방사방법 차이에 따른 스타킹의 착용감 비교

조길수,박미란 연세대학교 생활과학연구소 2000 生活科學論集 Vol.14 No.-

The purpose of this study was to compare the wear sensation of panty hose stockings made of two differently processed spandex. Specimens were four panty hose stockings. Two of them were made of spandex by dry spinning and the others by wet spinning. As a field wear study, each subject had spent a day with wearing the stockings one by one, and then evaluated the subjective sensation such as tactile, haptic, transparent sensation, fit, comfort and appearance. Panty hose stockings made of spandex by wet spinning were evaluated comparatively rougher and uneven than those by dry spinning. Those by wet spinning were evaluated more transparent, less fit and more comfortable than those by dry spinning. And the subjects evaluated the appearance of panty hose stockings by wet spinning less attractive than those by dry spinning. Because panty hose stockings by wet spinning were more rough, uneven and less fit than those by dry spinning, it was thought that they are more desirable for the end use of summer stockings and more useful for middle aged women who prefer comfort and less fit. However, it needs to enhance the stretchability to increase fit in the case of stockings made of spandex by wet spinning.