Experimental Study on the Biaxial Tensile Properties of Warp Knitted Fabrics of Single Tricot Stitches

Yanagawa, Yoshiki; Kawabata, Sueo; Nakagawa, Kenzi; Toyama, Kiyonori; Kawai, Hiromichi

doi:10.4188/jte1955.16.126

Cited by 4 publications

(7 citation statements)

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“…Thus slippage can be expected in most closed lap single bar knitted fabrics as the tension increases. This conclusion is supported by photographic evidence [8] and by the experimental results of Yanagawa et al [12], which show that there is considerable slippage during the extension of closed lap single bar knitted fabrics.…”

Section: Mechanisms Of Warp Knittedmentioning

confidence: 64%

“…The results of the model are compared with experimentally measured dimensional properties and microscopic examination of the fabrics and with the experimental biaxial tensile properties determined by Yanagawa et al [12]. Since the energy model has been used successfully for the analysis of several different fabric structures, it is possible to compare the results of different types of fabric using the same dimensionless parameters.…”

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confidence: 97%

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Analysis of the Single Bar Warp Knitted Structure Using an Energy Minimization Technique

Hart

Jong

Postle

1985

Textile Research Journal

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Some computed results of an energy method of analysis applied to single bar warp knitted structures (Part I) are presented. They are compared with experimental results and previous models of the warp knit structures in the literature. The single bar warp knit structures are characterized by a complex interlacing pattern and relatively little restriction to changes and redistribution of yam loop shape as the fabric is stretched. Computer results show that the yam loops are oriented to lie perpendicular to the fabric plane when the fabric is stretched. At the same time the fabric thickness is reduced. The distributed forces acting along the yams within a unit repeat of the single bar warp knitted structures are more peaked than those of the weft knitted fabrics. The forces of contact arising from the neighboring but not interlocking yarns within the repeat of the warp knit structure are significant. The single bar warp knit structures are compared to the weft knitted and woven fabrics by means of a redefined tightness parameter.

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Section: Mechanisms Of Warp Knittedmentioning

confidence: 64%

mentioning

confidence: 97%

Analysis of the Single Bar Warp Knitted Structure Using an Energy Minimization Technique

Hart

Jong

Postle

1985

Textile Research Journal

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“…For the discussion of the above-mentioned theory, the biaxial tensile properties of plain tricot fabric was measured by using the same biaxial tensile tester [9] as in earlier papers [2,3].…”

Section: -1 Experimental Methods and Specimenmentioning

confidence: 99%

“…Therefore, the composition of the properties in the two regions is made by an approximate method shown in Fig.7, as well as in earlier papers [1,3]. Namely, point Pin bending region is moved to P (toward stretching side) for the length equivalent to QQ'.…”

Section: -4 Composition Of Properties In Two Regionsmentioning

confidence: 99%

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Theoretical Study on the Biaxial Tensile Properties of Plain Tricot Fabric

Yanagawa

Kawabata

Kawai

1971

Journal of the Textile Machinery Society of Japan

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The structure of the plain tricot knitted fabrics underlies two-bar tricots knitted fabrics. The biaxial tensile properties of the plain tricot fabric are calculated theoretically from the structure of fabric and some of mechanical properties of yarn, applying the method developed by S. Kawabata.The tensile process is divided into two regions, i.e., the bending effective region and the stretching effective region. The border of these two regions can be given by critical stretch ratios 'id and AC2 where suffixes 1 and 2 indicate wale direction and course direction, respectively.The tensile properties in the two regions are analyzed by using a new model which is different in structure from single dembigh stitch. The model used for plain tricot stitch consists of needle loop and sinker loop, i.e., layer of front yarn and of back yarn. In this model are two yarn crossing points; one is of the front yarn layer and another is of the back yarn layer. It is assumed that these two crossing points are in contact with each other and do not seperate during deformation process before critical ratios, that is, in bending effective region, but, after the critical state, these two points are separated in proportion to 22. The other analytical method is same as that of single dembigh fabric. Yarn frictional properties between crossing yarns are introduced and the accuracy of the calculation is much more enhanced due to this improvement, compared with the theory of single dembigh fabric.

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