ISO 4674-1:2016 specifies two methods for determining the forces necessary to initiate and propagate tearing of a coated fabric using the constant rate of tear method. The methods described are the following: - method A: tongue tear; - method B: trouser tear.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus and reagents
5 Atmospheres for conditioning and testing
5.1 For conditioning
5.2 For testing
6 Time-interval between manufacture and testing
7 Method A — Tongued (double-tear) test piece
7.1 Selection and preparation of test pieces
7.2 Procedure
7.3 Calculation and expression of results
8 Method B — Trouser-shaped (single-tear) test piece
8.1 Selection and preparation of test pieces
8.2 Procedure
8.3 Calculation and expression of results
9 Precision
10 Test report
Annex A Example of calculation of tear force (informative)
Annex B Wide-width trouser-shaped test piece (normative)
ISO 1421:1998 Rubber- or plastics-coated fabrics -- Determination of tensile strength and elongation at break
ISO 2231:1989 Rubber- or plastics-coated fabrics -- Standard atmospheres for conditioning and testing
ISO 2286-1:2016 Rubber- or plastics-coated fabrics -- Determination of roll characteristics -- Part 1: Methods for determination of length, width and net mass
ISO 1421:1998 Rubber- or plastics-coated fabrics -- Determination of tensile strength and elongation at break
ISO 2231:1989 Rubber- or plastics-coated fabrics -- Standard atmospheres for conditioning and testing
ISO 2286-1:2016 Rubber- or plastics-coated fabrics -- Determination of roll characteristics -- Part 1: Methods for determination of length, width and net mass
ISO 2602:1980 Statistical interpretation of test results -- Estimation of the mean -- Confidence interval