Deformability of textile performs in the manufacture of non-crimp fabric composites

S.V. Lomov,     Katholieke Universiteit Leuven,Belgium


Deformability of multiaxial multi-ply stitched preforms is studied in biaxial tension, shearing and compression. Biaxial tension tests reveal a strong interrelation between the two directions of tension in the case of tension in bias direction. The picture frame test is combined with full-field optical measurements of the shear strain, allowing true registration of the fabric shear angle. The difference between the shear behaviour in different directions relative to the stitching is shown. Thickness is measured for one of the sheared fabrics. Compression tests reveal a high compressibility ...

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