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)
 Full text | 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