Overview
EN ISO 13937-4:2000 is a CEN-adopted ISO standard that specifies a double-tear method (the tongue test) for assessing the tear properties of textile fabrics. The standard defines the use of tongue-shaped test specimens-specimens prepared with cuts that form a tongue-and measures the tear force required to propagate two pre-initiated tears when tensile force is applied parallel to the cuts and the fabric tears in the direction of the applied force.
Key topics and requirements
This Part of EN ISO 13937 covers the essential elements needed to perform the double tear (tongue) test in a reproducible manner:
- Specimen geometry - use of cuts shaped to form a tongue-shaped specimen to start double tears.
- Test orientation - the force is applied parallel to the cuts so the fabric tears in the direction of the applied force.
- Measurement objective - determination of the tear force required to propagate the previously started double tears.
- Procedure and reporting - method steps for conducting the test and documenting results (test conditions, specimen orientation, measured force).
- Standard adoption - published as EN ISO 13937-4:2000 and adopted by national bodies (e.g., SIST for Slovenia).
Note: The standard text provides procedural details for accurate and reproducible testing; consult the full document for specific instructions on specimen preparation, equipment, conditioning and result expression.
Applications
EN ISO 13937-4:2000 is used where controlled assessment of fabric tear propagation is required:
- Textile manufacturers evaluating fabric durability and quality during product development.
- Quality control laboratories performing routine acceptance testing of woven, knitted or other textile constructions.
- Technical textile producers assessing performance for protective clothing, industrial fabrics and upholstery where tear resistance is critical.
- Research and development teams comparing material formulations, finishes or constructions for improved tear behaviour.
- Certification and compliance testing where standardized tear property data are needed for specifications or procurement.
Related standards
- Part of the ISO 13937 series on tear properties of fabrics (other parts address alternative tear methods).
- Adopted by CEN and national standards organizations; check regional or industry-specific standards for complementary test methods.
Keywords: EN ISO 13937-4, tongue test, double tear test, tear properties, tear force, textile testing, fabric tear, CEN standard.
