Global ETD Search
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 98 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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Application of Lean Six Sigma in Textile Yarn Dyeing.
North Carolina State University Theses Textile Engineering, Chemistry and Science.
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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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Bond Behaviour of a Multi-Filament Yarn Embedded in a Cementitious Matrix
Although the bond of a strand in a cementitious matrix is certainly predominated by the bond properties between filaments and matrix, more detailed information is needed to evaluate the failure mechanisms of such a complex system under a pull-out load and hence to allow an analytical and numerical …
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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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Effect of multifilament yarn crack bridging on uniaxial behavior of textile reinforced concrete
Textile reinforced concrete (TRC) has emerged in the last decade as a new composite material combining the textile reinforcement with cementitious matrix. Its appealing feature is the possibility to produce filigree high-performance structural elements that are not prone to corrosion as it is the …
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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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A Novel Method for Dynamic Yarn Tension Measurement and Control in Direct Cabling Process
Yarn tension control is an important parameter for quality and efficiency in textile processes. It has a significant influence on productivity in various processes such as winding, twisting and cabling. There have been several articles based on theoretical models, which discuss the effect of …
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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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