Prediction criterion of fabric tensile strength in arbitrary directions
Keywords:
woven fabric, breaking tensile force, tensile strength, Cheng-Tan strength criterion, harmonic expressionAbstract
Determination of mechanical properties and predicting the behavior of woven fabrics during the manufacturing process and finally in the use is an important part of textile science. Depending on the direction of the tensile force, tensile strength of the fabric changes due to its anisotropic properties. Prediction of fabric tensile strength in various directions of the force becomes very important factor not only in the implementation but also in analytical studies. This paper investigates and analyzes Cheng-Tan strength calculation criterion or failure criterion for woven fabrics. Based on the experimental results, Cheng-Tan investigated the dependence of tensile strength on the direction of the tensile force. They used a harmonic cosine series to calculate the off-axial tensile strength of an anisotropic woven fabric at any direction. In this paper values of breaking tensile forces are determined experimentally in laboratory for four types of fabric (cotton, wool, wool + lycra and PES) and in seven different directions (angles of 0°, 15°, 30°, 45°, 60°, 75°, 90°). Using these experimentally obtained values and using the Cheng-Tan strength criterion, the theoretical fabric tensile strength for an arbitrarily chosen direction are calculated. A harmonic expression is then adopted to approximate the experimental results so that this tensile strength anisotropy of woven fabric can be expressed analytically. Cheng-Tan strength criterion has the ability to predict the fabrics tensile strength with high accuracy.Downloads
Published
2014-12-31
How to Cite
[1]
Penava, Željko, Šimić, D. and Knezić, Željko 2014. Prediction criterion of fabric tensile strength in arbitrary directions. Textile. 63, 11-12 (Dec. 2014), 337–346.
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Original scientific paper
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