• Title, Summary, Keyword: hand value

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Effect of Dyeing by Immature Persimmon Juice on the Hand of Fabrics (감즙염색이 직물의 태에 미치는 영향)

  • 고은숙;이혜선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.27 no.8
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    • pp.883-891
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    • 2003
  • In this study, a change of hand of fabrics dyed with persimmon juice was measured using Kawabata Evaluation System. Using various cotton fabrics, linen fabric and silk fabric used frequently for persimmon juice dyeing, we examined the changes of physical properties and hand according to persimmon juice dyeing and washing. The dynamic characteristics of hand were measured tensile, shear, bending, compression, surface properties, thickness and weight. Linearity of load-extention and tensile resilience were increased in all kinds of fabrics after dyeing. Tensile energy decreased in cotton fabric 2(gauze), cotton fabric 3(muslin) and linen fabric. Shear stiffness and hysteresis of shear increased in most of fabrics. Bending rigidity of the bending property and hysteresis of bending, linearity of compression of the compression property, compression energy and compression resilience increased in all kinds of fabrics after dyeing. Thickness and weight increased much in all kinds of fabrics after dyeing. In the primary hand value, stiffness and anti-drape stiffness increased in all kind of fabrics after dyeing. The fullness and softness, crispness, scrooping feeling and flexibility with soft feeling decreased. As the stiffness after persimmons dyeing increased, it was suitable for clothes material of summer.

The Study on Handle of Korean Summer Suits (국산하복지의 태에 관한 연구)

  • 김석근;김덕이
    • Textile Science and Engineering
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    • v.22 no.2
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    • pp.9-16
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    • 1985
  • In this paper, four primary hands and total hand, suggested by HESC, of Korean summer suits for men had been judged by the experts in factories, so called by means of hand judgement. And the mechanical properties of those suits had been measured by KES measuring system, developed by kawabata. And then the regression eguation which hand value can be calculated from mechanical properties can be obtained from sensory properties and mechanical properties of these suits by means of a step wise block regression analysis. And hand and mechanical properties between Korean summer suits and Japanese had been inspected, and compared each other. The result obtained were as follow. 1) Correlation coefficient between experimental and the regressed hand values of Korean summer suits were higher than that of Japanese. The saturation of R with increasing terms of Xi suggests that the behind terms of after the saturation can be ignored.2) The order of contribution of each of the characteristic values to the hand value were as follow. a)Stiffness; shearing properties>bending properties>surface properties>tensile properties>compression properties>WT b) Crispness; surface properties>shearing properties>compression properties>tensile properties>bending properties>WT c)Fullness and softness; compression properties>tensile properties>WT>shearing properties>bending properties>surface properties d)Anti-drape stiffness; bending properties>surface properties>shearing properties>compressin properties>tensile properties>WT

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Influences of Mobile Phone Electromagnetic Wave on Human Body According to Holding Method by the Hand and Wearing Accessories (손과 액세서리에 의한 휴대폰 전자파의 인체 노출 특성)

  • Choi Myung-Sun;Jang Young-Ho;Gimm Youn-Myoung;Park Han-Kyu
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.16 no.6
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    • pp.652-660
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    • 2005
  • In this paper, we compared the spatial peak SAR values measured with and without holding the hand-held phones to check the present recommended spatial peak SAR. To better understand the analysis of the SAR effect values, SAR is measured with hand phantoms, made and recommended for the use of Bar-type and Folder-type hand-held phones. The measured results have shown that use of the hand considerably reduces the spatial peak SAR value in a head phantom. We compared the spatial peak SAR values measured with and without accessories. To better understand the analysis of the effects of SAR values with accessories, SAR is measured with accessories composed of three kinds of earrings and glasses. The measured results proved in study that the spatial peak SAR value in a head phantom is not affected by the earrings but by the glasses. The glasses considerably increases the spatial peak SAR value in a head phantom while using Bar-type phones, although the effects are modest with Folder-type phones.

A Study on the Effectiveness of the Lungs Hand Acupuncture Based on Bio Signal Analysis (생체신호분석 기술을 적용한 폐 수지침 요법에 대한 효과성 연구)

  • Kim, Bong-Hyun;Cho, Dong-Uk
    • The KIPS Transactions:PartB
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    • v.19B no.2
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    • pp.77-82
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    • 2012
  • We carried out study to prove effectiveness as stimulating corresponding points to lung in hand to experiment applied analysis parameters for image and audio signals in this paper. To this end we collected facial image and voice before and after stimulating corresponding points to lung in hand to a male 20s 25 people. In addition, we analyzed change color, voice energy and speaking rate of right cheek area corresponding points to lung to suggest the theory of the Oriental medicine diagnosis based on data collected. As a result, after performing hand acupuncture, L value of right cheek area decreased average 2.33 and a value b value increased 0.76, 0.97 on average. In addition, size of voice energy increased average 0.42, speaking rate decreased average 0.07. In other words, effect of lung function was improved using hand acupuncture corresponding points to lung.

ON ASYMPTOTIC OF EXTREMES FROM GENERALIZED MAXWELL DISTRIBUTION

  • Huang, Jianwen;Wang, Jianjun
    • Bulletin of the Korean Mathematical Society
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    • v.55 no.3
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    • pp.679-698
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    • 2018
  • In this paper, with optimal normalized constants, the asymptotic expansions of the distribution and density of the normalized maxima from generalized Maxwell distribution are derived. For the distributional expansion, it shows that the convergence rate of the normalized maxima to the Gumbel extreme value distribution is proportional to 1/ log n. For the density expansion, on the one hand, the main result is applied to establish the convergence rate of the density of extreme to its limit. On the other hand, the main result is applied to obtain the asymptotic expansion of the moment of maximum.

Mechanical Properties of Silk Fabrics dyed with Persimmon Juice (감즙 염색에 의한 견직물의 역학적 특성)

  • Bae, Jung-Sook
    • Fashion & Textile Research Journal
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    • v.15 no.1
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    • pp.156-162
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    • 2013
  • For the development of high quality textiles, silk fabrics were dyed repeatedly with persimmon juice by padding mangle. We evaluated the mechanical properties and hand value by Kawabata Evaluation system for dyed silk fabrics. The results obtained from this study were as follows. With the increase of repeating padding times of dyeing, the linearity load-extension curves of the silk fabrics were increased; however, the tensile resilience of fabrics decreased. The hysteresis values of shear force were increased without significant change of shear stiffness. The coefficient of friction values were also decreased and geometrical roughness values were increased. The silk fabrics dyed with persimmon juice had shown the thickness and weight grow as the number of padding increases. The hand values of silk fabrics which were classified into 6 items in the Kawabata Evaluation System, were evaluated as repeating times of dyeing with persimmon juice. The hand values of Koshi(stiffness) and Hari(anti-drape stiffness) were increased, whereas Shinayakasa (flexibility with soft feeling) and Fukurami(fullness and softness) were decreased by dyeing with persimmon juice. However there was no significant change in hand values according to repeating padding times of dyeing.

Educational Value of the Woodworking -The Handworks from the Viewpoint of Developing Manual Function- (목공의 교육적 가치에 대한 고찰 -수공노작교육 중심으로-)

  • Lee, Min-Gyoung;Kang, Ho-Yang
    • Journal of the Korea Furniture Society
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    • v.19 no.5
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    • pp.403-410
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    • 2008
  • This study is a background for developed woodworking educational program. To achieve the propose of this research, related to handwork to figure out the concept, changes and characteristics of handwork and the products of handwork. The areas of woodworking needs basic hand function of gripping and hooking, strong hands and stability of hand operation. Activities of this area can enhance the ability of controlling the strength of hand and the stability of hand operation. The use of both hands in woodworking promotes the coordination of both hands and handling ability. In the woodworking, diverse functions of hands are used with various tools. Each hand may be move differently, and the hand operation is elaborated. These features of woodworking help growing coordinations and hand function, and developing brain and creativeness.

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Physical and Hand Properties of the Knitted Fabrics From Machine Knitting Fancy Yarns (기계편용 장식사 니트소재의 물성 및 감성 평가)

  • Park, Key-Yoon;Park, Myung-Ja
    • Journal of the Korea Fashion and Costume Design Association
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    • v.10 no.2
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    • pp.125-138
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    • 2008
  • For physical and hand property evaluation of fabrics, the knitted fabrics from 11 types of machines knitting fancy yarns, boucle (M1), knot (M2), snarl (M3), and slub (M4), tamtam (M5), tubular (M6), fur 1 (M7), bead (M8), fur 2 (M9), fur 3 (M10), and ladder (M11) yarns, were prepared with 7-10 G plain stitch. Washing test and pilling test had also been carried out. For hand properties by objective sensibility evaluation, 17 items of sir mechanical properties using KES-FB (Kawabata Evaluation System) had been measured. Then hand values of knitted fabrics were calculated with a calculation formula, namely KN-402-KT. Finally the total hand values were obtained through KN-301-WINTER. As a result of physical properties and objective evaluation for machines knitting fancy fabrics, most of them shrank in the direction of wale and course after the washing test, in which their shrinkage rate had a maximum of 3.5%. Therefore, the washing test indicated that the shrinkage ratio of knitted fabrics had a minor change. The results of the pilling test are mostly 4-5th grade, and all of the machines knitting fancy fabrics showed good results in the pilling resistance. In hand properties and objective sensibility evaluation, twisted fancy yarns, such as boucle (M1), knot (M2), snarl (M3), and slub (M4), were superior to bonding rigidity (B) and shear rigidity (G). The surface property between course and wale differs in all samples and course direction is tougher than wale direction. FUKURAMI (fullness and softness) of all samples have high values, besides NUMERI (smoothness) of tamtam (M5) and boucle (M1), which were rather good. Most samples except fur 1 (M7) had low KOSHI (stiffness) value. The total hand value (THV) of twisted yarns was low. This study proves that manufacturers, who plan knitting yarn products and knit fashion, can apply these data to develop machines knitting yarns and knits that fit the consumers' demands.

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A Study on the mechanical properties of fabrics by fabric trend themes -2002/03 Fall & Winter season for women′s wear- (소재 트랜드 테마별 직물의 역학적 특성 연구 -2002/03 여성복 추동 시즌을 중심으로-)

  • 주정아;유효선
    • Journal of the Korean Society of Clothing and Textiles
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    • v.27 no.8
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    • pp.958-968
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    • 2003
  • The purpose of this study was to clarify the different mechanical properties of fabrics among the theme groups classified by fashion fabric trend. This study can be useful for fabric marketers and planners to design new products. In order to carry out this study, the fabric samples of representative theme for‘2002/03 F/W fashion fabric trend were collected from a fashion company and were measured to analyze the mechanical properties, hand value(H.V) and total hand value(T.H.V) by KES-FB System. The results were as follows. 1. The theme-A of‘Luxury, Elegance’was consisted of wool, rayon and PET and had a lower B, 2HB of bending properties and a lower G and 2HG5 of shear properties. The theme-B of‘Technical, Functional’was consisted of synthetic fibers such as PET, PA, PU and elastic fiber and had a higher MIU and a lower MMD, SMD of surface properties. The theme-C of‘Vintage, Aged’was consisted of mostly cotton and had the highest B and 2HB. The theme-D of‘Fancy, Airy’was consisted of mostly woolen wool, polyacryl and polyamide and had a high MMD and SMD of surface properties and a high LC and RC of compression properties. 2. As the results of analyzing H.V and T.H.V through KES-FB system, the theme-A showed a higher Smoothness and lower Stiffness. The theme-B had a lower Smoothness, Fullness, Soft feeling and T.H.V and the theme-C had the highest Stiffness. The theme-D showed the highest Fullness and Soft Feeling but the lowest Stiffness.

Fatigue Phenomenon of Mechanical Properties in Denim Fabrics for Slacks during Repeated Shear and Tensile Deformation (반복 전단.인장 변형에 따른 데님 직물의 피로도에 관한 연구)

  • Lee, Chang-Mi;Gwon, O-Gyeong;Park, Hui-Ung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.20 no.6
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    • pp.975-982
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    • 1996
  • This study was conducted to examine the fatigue phenomenon of mechanical properites in denim fabrics for slacks during repeated shear and tensile deformation by analysing the change in the basic dynamic properties of fabrics on the basic of experiments to obtain the basic data necessary to measure their fatigue. In addition, this study was carried out by allowing these denim fabrics at market to go through the repeated deformation under such different loads as 500 gf/cm2 and 1000 gf/cm2 by using a simulated fatigue tester, by calculating both dynamic properties and hand value (HV) of these fabrics with KES-F system and then by obtaining the THV through these calculated properties. The results are as follows: 1 The fatigue phenomenon of dynamic properties was remarkably shown by the repeated shear and tensile deformation, while the increase of hysterical plastic substances was also remarkable in these shearing and bending properties. 2. The elasticity values of tensile, bending and compression properties, such as, B and G were reduced: whereas RT and RC values increased. It was shown, then, that those fabrics lost their elasticity and became flexible and soft with the increase of fatigue. 3. The fatigue phenomenon of hand value also showed that those fabrics became soft in relation with the change of all dynamic properties, and that their performance was also change to flexible hand value. 4. TRhe degree of fatigue was also shown by the loads given to the repeated deformation. It was shown that the fatigue was higher for the tensile load of 1000 gf/cm3 than did the standard load of 500 gf/cm3 It is necessary, therefore, to consider the load in accordance with their usage when examining the fatigue phenomenon with respect to the dynamic properties of clothing materials. 5. The loads were nearly not influenced by the change in the general hand value tended to show a little of increase with the increase of fatigue, Based on those results, it seems that the fatigue phenomonon is related to the loads given to the repeated deformation.

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