On a biaxial tensile testing machine developed at INSTITUT TEXTILE DE FRANCE, crossshaped test specimens are submitted to normal stresses on each side. The axes of strength are perpendicular and the elongations are recorded with a C C D camera and treated with suitable image analysis system.
Trials are performed on four produits : two nonwovens and two woven products. These products are also tested according to monoaxial tensile test (NF G 38-014 and ISO 1013. Wide-width tensile test).
Comparison of results obtained by monoaxial and biaxial tensile test shows a rigidness of fabrics when stresses are applied perpendicularly to the pulling direction.
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