Journal ArticleDOI
39—the stress–strain properties of multi-ply cords part ii. experimental
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The theory put forward by Treloar (Part I) is used to calculate the stressstrain curves of cords of 2-, 3-and 7-fold constructions as discussed by the authors.Abstract:
The theory put forward by Treloar (Part I) is used to calculate the stressstrain curves of cords of 2-, 3- and 7-fold constructions. In each case this is done for one particular singles twist and a range of cord twists (including some in the same direction as the single twist). The calculated curves are then compared with the corresponding experimental curves, the degree of agreement being found to be quite satisfactory.read more
Citations
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Determining Mechanical Properties of Yarns and Two-Ply Cords from Single-Filament Data: Part I: Model Development and Predictions
TL;DR: In this article, the authors constructed a computer model that can predict the properties of flat yams, twisted yams and twisted cords from single-filament data using a modulus verifier.
Journal ArticleDOI
Determining Mechanical Properties of Yarns and Two-Ply Cords from Single-Filament Data Part II: Comparing Model and Experimental Results for PET
TL;DR: In this paper, a model was developed to predict the mechanical properties of yarns and cords from single-filament properties, and the model showed good agreement with experimental force-elongation data, although there is some deviation at higher twist levels.
Journal ArticleDOI
The mechanical properties of textile materials as influenced by complexity and rate of testing
TL;DR: In this paper, the authors show that the ability to absorb energy markedly increases with increasing complexity of geometry at low strain rates, characteristic of an Instron, and the reasons for this additional energy absorption are discussed.
Journal ArticleDOI
Physics of textiles
TL;DR: The problems and processes of the textile industry have in the last 25 years been the subject of intense scientific activity as mentioned in this paper, and the stimulus to this activity has arisen mainly from the impact of the newer polymeric fibers, which have introduced possibilities of improved properties and radically different methods of production and processing.
References
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Journal ArticleDOI
25—The Geometry of Multi-Ply Yarns
TL;DR: The theory of the geometry of multi-ply yarns developed in this paper is based on the assumption that the individual filament in the ply has the form of a “doubly-wound” helix, i.e., of a helix wound about a helical axis.
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28—A Study of the Geometrical Structure of Multi-Ply Yarns
TL;DR: In this article, the distortion of the shape of the ply cross-section is discussed and illustrated for two-, three-and seven-fold yarns, where the best agreement between the calculated and observed cord retractions occurs with sevenfold cords.
Journal ArticleDOI
A simplified method of making core yarns
TL;DR: In this paper, a method of making a core yarn whereby all the plies are delivered at the same rate, and hence the doubling can be carried out on a normal doubling machine is described.