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An Image Based Method for Characterising the Mechanical Behaviours of Fabrics. Part I: The Measurement of In-plane Tensile Behaviour

Research and development

Authors:

  • Xin Binjie
    Institute of Textile & Clothing, Hong Kong Polytechnic University, Kowloon, Hong Kong
  • Hu Jinlian (j/w)

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Abstract:

The characterisation of fabric mechanical properties including tensile, bending, shearing, compressing and fracture was investigated by an image based method. In this paper, an in-plane strain-stress measurement system was built using the Kawabata Evaluation System (KES) attached to a set of image digitalisation and analysis modules. The trajectory tracking method based on image analysis was used to calculate the displacement and distortion of reference points printed on a fabric surface under a certain load, so as to determine the displacement and strain distribution field of the specimen. The two-dimensional displacement distribution field and related parameters were used to define the in-plane deformation of fabrics instead of the traditional one-dimensional strain-stress curve. The relationship between strain values determined by the Kawabata Evaluation System and those obtained by the image-based method was analysed, and the experimental results show that the image-based method is effective and simple to characterise both the global and local strains two dimensionally.

Tags: fabrics, mechanical properties,image-based method, displacement, shape deformation, Kawabata Evaluation System.l

Published in issue no 1 (66) / 2008, pages 72–75.

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