engleski

Influence of testing methods on the shear properties of e-glass woven fabrics

Shear behaviour is one of the most important mechanical characteristics that contribute to the performance and appearance of woven fabrics. During shear deformation, the fabric yarns experience large angular variation between warp and weft yarns. In this paper, plain weave E-Glass woven fabrics were investigated to describe their shear behaviour in terms of shear forces, shear angles and shear stresses, using the direct shear force measurement and picture frame test methods. Tests were conducted on specimens that were fastened in two parallel clamps of the tensile tester and specimens that were clamped in a picture frame. Specialized rig and clamps for shearing fabrics were designed and manufactured. Shear force acts on specimens that are cut in the warp and weft direction. The initial shear modulus of woven fabrics was also determined. Results show that both methods are valid and produce comparable results of shear forces, shear angles and shear stresses.

picture frame test ; pure shear ; direct shear force measurement ; E-glass woven fabric ; shear force ; initial shear modulus

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