ISO 13937-2-2000 PDF

Full title and description

ISO 13937-2:2000 — Textiles — Tear properties of fabrics — Part 2: Determination of tear force of trouser-shaped test specimens (Single tear method). This part of ISO 13937 specifies the single-tear “trouser” test used to measure the force required to propagate a previously started tear when a tensile force is applied parallel to the cut.

Abstract

ISO 13937-2:2000 describes a laboratory method (the trouser or “single tear” method) for determining fabric tear force using specimens cut into trouser-shaped legs which are gripped and pulled apart on a constant-rate-of-extension testing machine. The procedure covers sampling, specimen preparation, apparatus, test procedure, calculation of results and reporting requirements. The standard is mainly applicable to woven fabrics and certain nonwovens, and is not generally intended for knitted or highly elastic/stretch fabrics.

General information

• Status: Published — International Standard (confirmed following systematic review).
• Publication date: April 2000 (Edition 1, 2000-04).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.30 (Textile fabrics).
• Edition / version: 1 (2000).
• Number of pages: 14 (ISO published version).

Scope

This part of ISO 13937 specifies a single-tear method (the trouser-shaped specimen method) for determining fabric tear force. It applies primarily to woven textile fabrics and, where appropriate, to some nonwovens; it is generally not suitable for knitted fabrics, woven elastic fabrics, highly anisotropic or very loose constructions where tear transfer would invalidate results. The method is carried out on constant-rate-of-extension (CRE) tensile testing machines.

Key topics and requirements

• Specimen shape and dimensions: rectangular strips cut to a trouser shape (typical guidance: 200 mm × 50 mm with a central notch creating two “legs”; notch lengths and end marks defined in the standard).
• Apparatus: CRE tensile-testing machine with suitable grips (pneumatic/rubber-faced grips recommended to avoid slippage or jaw damage) and force recording at an adequate data rate to capture peak values.
• Conditioning and atmosphere: specimens conditioned and tested at specified standard laboratory atmosphere for textiles (see normative references in the standard).
• Procedure: clamping each trouser leg in opposite grips, applying tension parallel to the notch to propagate the tear; recording tear-force peaks throughout the test.
• Calculation: guidance for selecting peaks (division of the recorded force plot, exclusion of initial quarter, selection of highest/lowest peaks across remaining quarters) and arithmetic averaging to report tear force in newtons.
• Validity and reporting: criteria for valid tests (no slipping, tear propagation direction, absence of thread slippage in fabric), plus required test-report items and informative annexes with sampling and example calculations.

Typical use and users

Used by textile and garment manufacturers, independent textile testing laboratories, quality-control departments, research organizations and standards committees to quantify tear strength for product specification, quality acceptance, comparative testing and R&D. Test engineers and lab technicians running tensile testers and material scientists interpreting tear-behaviour data are common users.

Related standards

ISO 13937 is a multi-part series covering tear properties of fabrics: Part 1 (ballistic pendulum / Elmendorf method), Part 2 (trouser test — this document), Part 3 (wing-shaped specimens) and Part 4 (tongue-shaped specimens). Other related standards include national/adopted EN/UNE equivalents (EN ISO 13937-2) and complementary test methods for nonwovens or coated fabrics (for example ISO 9073-4, ISO 4674 referenced as alternatives for specific constructions).

Keywords

tear properties, tear force, trouser test, single tear, textile testing, fabric tear strength, CRE tensile tester, specimen preparation, ISO 13937-2.

FAQ

Q: What is this standard?

A: ISO 13937-2:2000 is an international standard that specifies the single-tear (trouser-shaped specimen) method to determine the tear force of textile fabrics.

Q: What does it cover?

A: It covers sampling, specimen cutting (trouser shape), apparatus requirements, conditioning, test procedure on a CRE tensile tester, calculation and expression of results, validity criteria and reporting; informative annexes provide sampling guidance, cutting patterns and example calculations.

Q: Who typically uses it?

A: Textile manufacturers, independent testing laboratories, quality-control and R&D teams, and standards bodies use it to assess and specify fabric tear performance. Test technicians and materials engineers run and interpret the tests.

Q: Is it current or superseded?

A: The ISO record shows ISO 13937-2:2000 was reviewed and confirmed (systematic review) and remains the current edition; it has been confirmed via ISO review actions (confirmation recorded in 2023).

Q: Is it part of a series?

A: Yes — ISO 13937 is a multipart series on fabric tear properties (Part 1: Elmendorf/ballistic pendulum; Part 2: trouser test; Part 3: wing test; Part 4: tongue test). Each part addresses a different tear-test method or specimen geometry.

Q: What are the key keywords?

A: Key keywords include tear strength, trouser test, single tear, fabric tear, textile testing, ISO 13937-2.