STRAIN MEASUREMENT IN FABRICS. PART III: A NON-CONTACT METHOD OF DETERMINING FINITE STRAINS - PRACTICAL IMPLEMENTATION

The theoretical basis of a method of measuring true finite strains (Green’s Strains) in fabrics has been reported in an earlier paper. The purpose of the present paper is to outline how the method may be implemented in practice, and how current limitations of the method might be overcome. At present, the technique is confined to essentially planar specimens of fabric and to photographic techniques. Ways of developing the method to overcome its limitations are suggested.