EN 12814-3:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and designations
5 Principle of the test
6 Sampling procedures
7 Dimensions of test specimens
8 Cutting and preparation of test specimens
9 Mechanical testing
10 Test equipment
11 Determination of the long-term welding factor
12 Test report
Annex A (informative) - Resistance to slow crack growth
Annex B (informative) - Whole pipe tensile creep rupture test
Annex C (informative) - Minimum creep rupture time of the
        parent material (t[tm]) for applicability of the
        long-term welding factor
Annex D (informative) - Testing of socket joints
Bibliography

This European Standard specifies the dimensions, the method of sampling and the preparation of the test specimens, and the conditions for performing the tensile creep test perpendicular to the weld in order to determine the long-term tensile welding factor.A tensile creep test may be used in conjunction with other tests (e.g. bend test, tensile test, macrographic examination,...) to assess the performance of welded assemblies, made from thermoplastics materials.The test is applicable to welded assemblies made from thermoplastics materials filled or unfilled such as tubes and fittings, sheets, plates and profiles, but not reinforced, irrespective of the welding process used.