engleski

Prediction of the tensile breaking force and extension at break of woven fabrics in an arbitrary load direction

Anisotropy is the characteristic which is typical for most materials, specially woven fabrics. Influence of direction of tensile force acting on the properties of the fabric is big and frequently tested. The woven fabric can be defined as orthogonal elastomer. This paper presents an experimental testing and determination of tensile breaking forces, extension at break and ultimate strength of woven fabric for different angles of force direction. Cotton fabric samples in plain weave were tested under tensile forces at the angles of 0°, 15°, 30°, 45°, 60°, 75° and 90° with respect to the weft direction. Based on the experimentally obtained values, theoretically calculated breaking forces, extension at break and ultimate strength for arbitrarily chosen fabric directions was calculated. This paper compares experimental and theoretical values of breaking forces, extension at break and ultimate strength. Experimental results show the applicability of theoretical equations for calculating the breaking force and extension at break for arbitrarily chosen direction of cutting the fabric specimen. Therefore, the measurements need to be implemented when the tensile force acting on the fabric only in the warp (90°), weft (0°) and at angle of 45°.

Anisotropy ; Tensile breaking force ; Extension at break ; Woven fabric

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