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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 88 for “"Yarn"”.
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Functionalized Shape Memory Alloy Microfilament Twisted Yarn Structures
… understanding of SMA microfilament twisted yarns to enable the design, manufacture, analysis, and synthesis of predictable and tunable functionalized microfilament fabric systems. SMA yarns are manufactured from a bundle of microfilaments through twist insertion. The nonlinear material …
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Investigation and Modelling of the Yarn Splicing Process
… overcome the deficiencies of knotting of textile yarns, but there has been little research into splicing because it is a complicated process, very difficult to observe. A splice is formed very quickly, using highly turbulent air within a closed environment. Direct observation is almost impossible. …
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Some aspects of the geometry of yarn structure
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1948.
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Steady state mechanics of the false twist yarn texturing process
Thesis. 1975. Sc.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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THE INFLUENCE OF YARN PROPERTIES ON THE SIZE SENSITIVITY OF PANTYHOSE
In this thesis the various aspects, of hosiery yarns are discussed. The yarns are divided into three groups:- - High Elastic Yarns - Torque Yams - Bicomponent Yarns For each yarn specific problem areas are indicated and methods to investigate these problems described. The pantyhose produced and its …
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Aplication of circular economy to manufacture sneakers from the banana pseudostem yarn
Traditional sneaker production uses water and soil contamination, due to the use of synthetic fibers and bad waste management. But new solutions have been developed, one of them being the replacement of natural fiber for synthetic fiber, one of the natural fibers is the banana fiber obtained from …
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Development of the core technology for the creation of electronically-active, smart yarn
… semiconductor devices within the fibres of a yarn, in order to create electronically-active yarns (e-yarn). Such electronically-active yarns will be the building blocks of the next generation of wearable electronics. Moreover, this will facilitate the creation of innovative solutions able to …
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Huichol Yarn Painting as an Art Therapy Intervention to Promote Insight in Latino Children
<p>Mexico is known for its richness in history, tradition and art. One particular group of people living in the Sierra Madre mountains of Mexico known as the Huichols (pronounced Wee-chol), have proudly sustained their indigenous ways for over a thousand years. The Huichol Indians created an art …
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Modeling, Analysis, and Experiments of Inter Fiber Yarn Compaction Effects in Braided Composite Actuators
… and entrapped air in the fluid. The inter fiber yarn compaction in the fiber layer, which is shown to reduce the effective closed-valve stiffness, is studied. A new analytical model for uniformly deformed actuators is developed to capture the compaction effect. This model considers the inter …
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The influence of yarn production and processing variables on loop distortion in plain knit fabrics
… of fundamental physical characteristics of the yarn. Eleven yarn production and processing variables are examined within the framework of factorially designed experiments. The influence of these independent variables is statistically related both to ranked levels of loop distortion and to values …
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The influence of heat transfer limitations on the properties of PET yarn produced by melt spinning
The production of synthetic yarns requires a cost efficient process whilst simultaneously incorporating process methods which ultimately lead to a high quality fibre. A critical part of the production process is the spinning of the molten polymer into individual filaments which are brought together …
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Tension Control In Narrow Fabric Weaving
… All of these techniques require a degree of yarn tension control for a good quality fabric because advanced fibres are easily damaged by excessive yarn tension. The cause of the sensitivity of advanced fibres to tension is their low extension. Textile industry standard yarns have extensions …
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The effect of process conditions, time, temperature, and rates of temperature rise, on the exhaustion of disperse dye on polyester yarn under high-temperature dyeing conditions
… on the exhaustion of disperse dye on polyester yarn under High-Temperature dyeing conditions was investigated. Two ply spun type Dacron 54 polyester yarn was dyed with Disperse Red 60 in 0.5 g/l dye bath concentration using an Ahiba Texomat Dyeing Apparatus under High-Temperature Dyeing …
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Numerical Constitutive Models of Woven and Braided Textile Structural Composites
… consisting of interlaced or intertwined yarns. The yarn paths are modeled with undulation portions, in which one yarn passes over and under one or more yarns, and with straight portions. It is assumed that the centerline of a yarn in the undulation portions is described by the sine …
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On-line sensing of the interlacing process
This thesis deals with the study of the yarn interlacing. The interlacing process is commonly employed by textile industries to impart cohesion points to a multi-filament yarn. Indeed, this work has been realized in the framework of a collaboration between the Department of Physics of the …
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