Journal of the Textile Machinery Society of Japan最新文献

{"title":"Viscoelastic Combining Flow in a T-shaped Tube","authors":"K. Nakamura, T. Nishimura, Ichiro Miyahara, T. Noda, A. Horikawa","doi":"10.4188/JTE1955.37.1","DOIUrl":"https://doi.org/10.4188/JTE1955.37.1","url":null,"abstract":"A viscoelastic combining flow in a T-shaped tube is examined using polymer (polyacrylamide) solutions. Streamlines near the combining part were observed from the two- or three-dimensional standpoint of view. Upstream of the combining part, circulating secondary flows were observed in the T-shaped tube as well as in a T-shaped channel composed of parallel plates. The streamline length changes according to the growth of the circulating secondary flow. Curves of streamline length plotted with Weissenberg number present an elastic effect of viscoelastic liquid and nearly become one straight line for the various throttling ratios and polymer concentrations. Hence, the elastic property of polymer solution contributes to the growth of the circulating secondary flow for the T-shaped combining tube flow.","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83409675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Model of Sweating Thermal Manikin","authors":"Yasuhiko Dozen, Y. Aratani, Toshitada Saitoh, K. Tsuchida, Kazuto Harada, S. Takenishi","doi":"10.4188/JTE1955.37.101","DOIUrl":"https://doi.org/10.4188/JTE1955.37.101","url":null,"abstract":"A sweating thermal manikin was constructed by collaborative research and development of Government Industrial Research Institute, Osaka and five textile companies to study the relations of heat and moisture transporting properties through clothings. A physical evaluating method of clothing comfort properties was established by using the measurements through the apparatus with sensors. The research and development were performed by Specific Regional Technology Development System of Agency of Industrial Science and Technology. The body was divided into ten segments; front and rear of chest, belly and buttock and limbs, in each segment of which the skin temperature and the amount of sweating can be independently controlled. The amount of sweating is simulated by regulating the air flow to the vapor generator. The climates within the clothes are measured by the thermometers, hygrometers, and heat flux sensors attached on the manikin. The performance of the manikin was evaluated by using shirts, underwears and long underpants made of cotton broadcloth and polyester taffeta.","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76602206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fiber manufacturing machinery","authors":"S. Tanimura, Michio Nagata","doi":"10.4188/JTE1955.36.1","DOIUrl":"https://doi.org/10.4188/JTE1955.36.1","url":null,"abstract":"","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87542471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dyeing and Finishing Machinery","authors":"Takashi Yamazaki, H. Yokoyama","doi":"10.4188/JTE1955.36.34","DOIUrl":"https://doi.org/10.4188/JTE1955.36.34","url":null,"abstract":"Nowadays, whole textile industry tends to full automation owing to the development of electronics, and will enter the era of Factory Automation (FA) in the near future. In the field of dyeing and finishing too, countermeasures to small quantity production with many sorts and deversification, efforts to high-grade and specialization, are making high progress. Our main purpose of observing the 4th OTEMAS is to inspect the ability of realizing Factory Automation in dyeing and finishing in the future. The main themes of the 2nd and the 3rd OTEMAS were energy saving and automation, respectively. At the 4th OTEMAS, gradual and solid efforts towards Factory Automation were found in many displayed machines, although Factory Automation in dyeing and finishing appears to be more difficult than in spinning and weaving because of including many complicated problems related to chemistry, thermodynamics and hydrodynamics. Interesting machines or engineering systems observed at the 4th OTEMAS will be presented in the following.","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75302346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis on Tightening Tension Wave in A Lockstitch Sewing Machine","authors":"Yoshinobu Kamata, T. Sakai, Masayuki Onoue, Y. Chatani","doi":"10.4188/JTE1955.36.64","DOIUrl":"https://doi.org/10.4188/JTE1955.36.64","url":null,"abstract":"In sewing with a single-needle lockstitch sewing machine, the tightening tension wave generated in the needle thread affects evidently the tightening situation of stitches. An attempt was made to clarify the basic mechanism of generation of the tightening tension wave by a computer simulation. This study consists of two parts. This paper is the first of them. In the present paper, a method of computer simulation is proposed for the analysis of the tightening tension wave at a very low sewing speed. The outline of this method is as follows: A simulation was done by using a simplified model for sewing mechanism. The calculation of tension in the model is based on the law of elasticity, where the calculation is classified into the following two cases in terms of effect of friction of the thread take-up lever thread eyelet ; 1) the thread take-up lever thread eyelet behaves as a fixed end at which the needle thread does not move due to the friction and 2) the needle thread moves being subjected to the friction.","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81741471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical Calculation of Hole-Pressure Error for Viscoelastic Fluids","authors":"N. Mori, H. Ono, K. Nakamura","doi":"10.4188/JTE1955.36.119","DOIUrl":"https://doi.org/10.4188/JTE1955.36.119","url":null,"abstract":"Hole pressure error, Pe; , in the creeping flow of viscoelastic fluids between two parallel plates was calculated numerically by means of Marker and Cell (MAC) method which is easy to develop into the calculations of a three-dimensional flow. The constitutive model used is the Rivin-Ericksen second- order fluid model with variable coefficients.First, calculations in a two-dimensional flow were carried out in order to clarify the effects of geometric dimensions and shear-thinning viscosity on Pe; . Pe; was found to depend on the geometry, i.e., the width and the depth of the slot and the channel height, and the shear-thinning viscosity. Next, calculation of a three-dimensional flow across a square hole was attempted in order to estimate the effect of the second normal stress difference. It was found that the value of Pe; increases monotonically with increasing -N2; /N1;, where N1; and N2; are the first and second normal stress differences.","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76435392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Weaving Machinery and its Related Machinery","authors":"K. Chikaoka, T. Kinari","doi":"10.4188/JTE1955.36.15","DOIUrl":"https://doi.org/10.4188/JTE1955.36.15","url":null,"abstract":"","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90466391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applicability of Table Reasoning Method for Fabric Defect Evaluation","authors":"Cong Shao, E. Kuze","doi":"10.4188/JTE1955.36.133","DOIUrl":"https://doi.org/10.4188/JTE1955.36.133","url":null,"abstract":"Fabric inspectors can recognize the fabric defects because they can observe not only the light and darkness but also the brilliance or gloss on the fabric surface, So, in order to distinguish the fabric defects by machine, it is also necessary to deal with such information as gathered by men. In this paper, a new method was researched to distinguish the fabric defects. We shined laser light on fabric surface and measured the diffused light over 360 degrees to create a reflected pattern.There are many naps and twists on the fabric surface irregularly, so the distribution of diffused light will be changed when the incident angle of laser is changed. If the light is shined on a fabric surface at an appropriate angle to detect the signal, the information about the fabric defect could be taken at its maximum. In our experiment, the most appropriate angle of incidence is 25 degrees and the most appropriate angle of measurement is 75 degrees.By using a pinhole and a filter in the optical path, we normally came to be able to detect the signal even if not in drakroom. And when the pinhole diameter was 0.7mm, we detected the signal with averaging the rippl of the noise of the thread naps and twists, and without losing the defect signal. Here the measured area (S) is given by the following equation. S=πa2/4cosθ Where a is the pinhole diameter, and θ is the angle of measurement.In this experiment, we found that the reflected pattern was dependent on the fabric construction. The normal pattern was symmetric, while abnormal one was distorted and the distortion of the reflected pattern was dependent on the kind of defect. The similar reflected patterns can be detected in the same sort of defect, but the identical one practically does not appear again even in the same sort of defect.Table reasoning method was introduced in order to recognize the fabric defect with reflected pattern. Firstly twelve characteristic parameters were smapled from the reflected pattern to investigate the relations between reflected pattern and fabric defect, then an expert system was built to identify the fabric defects.","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79505893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sliver Structure Analysis Applying Air Suction","authors":"Fujio Konda, S. Kurosaki, Masaaki Okamura, A. Watanabe, Naritoshi Ohta, Kunihiko Ario","doi":"10.4188/JTE1955.36.83","DOIUrl":"https://doi.org/10.4188/JTE1955.36.83","url":null,"abstract":"In order to study sliver structure by fracturing method, suction air was applied to the slivers. Slivers were separated into fibers and small fiber assemblies. The size of separated fiber assemblies flying in a transport tube was ensitively measured by a photoelectric method. The effects of the kinds of sliver and suction air velocity on the sliver separation behavior were observed. The distribution function of the number of fiber assemblies s parated within a short period of time exhibits Poisson's distribution. The distribution of separation time interval shows an exponential curve. Power spectrum indicates a tendency of \"pink noise\" and the autocorrelation fu ction decreases to zero after short period of time. From these results, it is concluded that the separation behavior within a short period of time is randomly independent of time. This suggests hat fiber assemblies arearranged atrandom along a short length of sliver. It was quantitatively shown that the size of fiber assemblies decreases with increasing drawing process. Comber roving consists of smaller fiber assemblies than card roving. As suction air velocity increases, large and medium size of fiber assemblies which could not be divided under the lower velocity are subdivided into smaller size. The aggregated structure of fibers in sliver is complex and is assumed tohave a multiple structure of fiber assemblies:","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75363711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Interlaced Yarn Part6:Yarn Motion in Interlacer","authors":"Y. Iemoto, S. Chono, Takayuki Tanaka","doi":"10.4188/TRANSJTMSJ.43.2_T10","DOIUrl":"https://doi.org/10.4188/TRANSJTMSJ.43.2_T10","url":null,"abstract":"目的 インターレーサ内の糸の運動を明らかにするため, 加工時の糸を高速度カメラで撮影し, 糸の位置の時系列データをデジタイザによりコンピュータに入力して解析する.成果 (1) 開繊部の生成する位置は, 糸が噴流を直接受ける空気噴射ノズルの近傍に限られ, その両端に交絡部が生成する.(2) 空気噴射ノズル位置における糸の運動は, バルーニング運動と噴流軸を横切る運動に大別できる.糸道管の左半分で空気流の回転方向と同じ方向にバルーニング運動をしていた糸は, ほぼ一定時間後に噴流軸を横切って糸道管の右半分に移動し, 右半分で逆方向のバルーニングを続ける.そして糸は一定時間後に再び噴流軸を横切って糸道管の左半分に移動する.糸の軌跡は8の字の変形である.バルーニングの方向は, 噴流軸を境にして糸道管の左半分と右半分で反対で, 空気流の回転方向に一致する.(3) 糸道管内端部付近では, 糸のバルーニング運動は加工条件によって異なり, 糸は糸道管の左半分と右半分のそれぞれにおけるバルーニング運動をしたり, あるいは糸道管全体にわたって空気流の回転方向とは無関係にバルーニング運動をする.糸道管外では, 空気圧, 糸速, フィード率が大きいほど変域は増す.(4) 糸の運動は, 空気噴射ノズル位置に関して糸道管軸方向にほぼ対称である.空気噴射ノズル位置にある糸の運動に追随して他の位置の糸は運動し, 空気噴射ノズル位置に近いほど, 又, フィード率が小さいほど, 追随の程度は大きい.(5) 糸のバルーニング運動の周期は, 糸道管内では小さく, いずれの加工条件でも同じ値0.4msを取る.糸道管外では, 比較的大きく, フィード率が大きいほど糸はゆっくり振動する.(6) 空気圧, 糸速が小さいほど, 糸が噴流軸を横切る回数は多い.フィード率が小さいほど, 糸は糸道管軸付近に位置する.空気圧, フィード率が大きいほど, 空気噴射ノズル位置の糸は, 噴流出口付近には一瞬しか位置せず, 噴流出口より離れた所により長時間にわたって位置する.","PeriodicalId":17585,"journal":{"name":"Journal of the Textile Machinery Society of Japan","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79789127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}