EN ISO 20932-3:2020 PDF

Name: EN ISO 20932-3:2020 — Textiles - Determination of the elasticity of fabrics - Part 3: Narrow fabrics (ISO 20932-3:2018)
SKU: EN ISO 20932-3:2020
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Textiles - Determination of the elasticity of fabrics - Part 3: Narrow fabrics (ISO 20932-3:2018)

Название (английский):

EN ISO 20932-3:2020

Textiles - Determination of the elasticity of fabrics - Part 3: Narrow fabrics (ISO 20932-3:2018)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 23
Дата публикации:: 26 февраля 2020 г.
Издание:: CEN EN 20932 edition 2 version 1
ICS:: 59.080.30

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Описание (английский):

This document specifies the test methods which can be used to measure the elasticity and related properties of narrow fabrics. Two methods are itemized: one for the purpose of product quality assurance (method A) and the other for product performance when in use (method B).

Abstract

Overview

Key topics and requirements

Scope and terms: Definitions for narrow fabric, elasticity, strip test specimen, gauge length, pretension, elongation, cycle and force decay are provided to ensure consistent interpretation.
Two test methods:
- Method A - intended for routine quality control, cyclic testing and repeatability checks.
- Method B - oriented to simulate in‑use performance, including hold times and decay measurements.
Apparatus and verification:
- Use of a constant‑rate‑of‑extension (CRE) testing machine (tensile tester with one fixed and one moving clamp) is specified.
- Reference to verification/calibration standards such as ISO 7500‑1 and measurement management ISO 10012.
Atmosphere and conditioning: Conditioning and testing atmospheres follow ISO 139 to minimise variability from humidity and temperature.
Specimen preparation and mounting: Guidance on slack mounting, gauge length, pretension and clamping (strip specimens and line clamps) is included; annexes describe clamping devices.
Procedure, recording and calculations: Instructions cover operation sequences for load/extension cycling, recording of load/elongation curves, expressions for elongation, force at specified elongation and force decay over time.
Annexes and reporting: Informative annexes include a typical cycling graph (Annex A), sampling procedure (Annex B) and clamping/holding devices (Annex C). The standard defines required items for the test report.

Applications and users

This standard is useful for:

Textile manufacturers and converters producing narrow fabrics (webbing, ribbons, elastic trims) for consistent product quality.
Test laboratories performing mechanical testing, QA/QC and product certification.
Product designers and R&D teams evaluating materials for apparel, medical straps, safety harnesses, automotive trims and technical textiles.
Procurement and compliance teams specifying performance criteria (elastic recovery, force decay, elongation) in contracts and technical datasheets.

Keywords: EN ISO 20932-3:2020, textile elasticity testing, narrow fabrics, CRE testing machine, method A method B, force decay, fabric performance, quality assurance.

Related standards

ISO 20932 series (other parts cover general terms and wider fabric types)
ISO 139 - Standard atmospheres for conditioning and testing
ISO 7500-1 - Verification of tensile testing machines
ISO 10012 - Measurement management systems
ISO 22198 - Determination of fabric width and length

For implementation, consult the full EN ISO 20932-3:2020 text for procedural details, annexes and mandatory reporting requirements.

Технические детали

Технический комитет: CEN/TC 248 - Textiles and textile products
SKU: EN ISO 20932-3:2020

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