Triaxially Woven Fabrics: Their Structure and Properties

Abstract

A loom developed for producing small samples of triaxially woven fabrics was used to weave experimental amounts of fabric from coarse string, from 3-ply, 840-den nylon yarn and from graphite yarn. The shedding and warp yarn indexing motions are controlled by a series of cams mounted on a cam roll. The sequence of cams can be changed to produce various weave patterns; changes in weave pattern can also be produced for any particular cam roll by varying the sequence of shedding and indexing motions.

The nylon triaxial fabric and a range of square orthogonal fabrics woven from the same yarn were evaluated for various structural and mechanical properties. The stability of the triaxial fabric is much greater than that of an orthogonal fabric with the same percent open area. The triaxial fabric exhibits greater isotropy in its bending behavior and a greater shear resistance than a comparable orthogonal fabric.

Keywords

Nylon yarn;graphite yarn Nylon triaxial fabric;square orthogonal fabric Shedding motions;indexing motions;cam sequence;weave patterns;orientation;compressive force;fabric geometries Structural properties;stability;bending behavior;shear resistance;open area;flexural rigidity;torsional rigidity;mechanical isotropy;mechanical properties Loom Physical tests

Get full access to this article

View all access options for this article.

References

ASTM D1388-64 (Option A), Tests for Stiffness of Fabrics, ASTM Standards, Part 24.

Behre

Mechanical Properties of Textile Fabrics, Part I: Shearing. Textile Res. J. 31 87–93 (1961).

Cooper

D. N. E.

The Stiffness of Woven Textiles. J. Textile Inst. 51 T317–T335 (1960).

Dow

Norris F.

Triaxial Fabric, U. S. 3 446 251 (May 1969).

Dow

Norris F.

Preliminary Investigation of Feasibility of Weaving Triaxial Fabrics Final Report under National Aeronautics and Space Administration Contract NAS9-8026, (January 1969).

Dow

Norris F.

Tranfield

George, Preliminary Investigations of Weaving Triaxial Fabrics (Doweave). Textile Res. J. 40 986–998 (1970).

Mörner

Eeg-Olofsson

Measurement of the Shearing Properties of Fabrics

Textile Res. J. 27 611–615 (1957).

Skelton

A Theoretical and Experimental Investigation of the Stiffness and Crease Recovery of Monofilament Fabrics. J. Textile Inst. 57 T505–T519 (1966).

Steele

A Method for Studying the Deformation of Fabrics in Creasing

Textile Res. J. 27 695–700 (1957).

10.

Treloar

L. R. G.

The Effect of Test-Piece Dimensions on the Behavior of Fabrics in Shear

J. Textile Inst. 56 T533–T550 (1965).