ISO 13936-1

Tensile Application

Tensile testing machines apply expanding tension perpendicular to a standardized stitched seam line embedded in the fabric specimen. Electronic load cells measure the force vector when the seam opening reaches target distances of two millimeters or four millimeters.

Calculation Baseline

Force curves compare seamed and unseamed specimens.

Performance Verification

Garment manufacturers test fabric construction under this standard to prevent seam opening failures during garment wear and wash cycles. Test reports specify seam slippage force in newtons for both warp and weft directions. Discrepancies between mill delivery specifications and buyer verification tests arise from improper sewing thread tension or variations in stitch density during sample preparation.

The test establishes the structural integrity limit of woven fabric constructions under localized transverse stress.