scope:

Scope of application

In conjunction with other tests, the shear tests characterise the quality of a welded joint in the case of sleeve welding with an incorporated electric heating element (HM) and heated tool sleeve welding (HD). The evaluation of the fracture behaviour and of the fracture pattern results in a statement about the execution and quality of a welded joint. Subject to certain prerequisites, the manual torsion shear test and the radial peeling test are also suitable for checking the quality of the welded joint in situ.

The specific materials and material properties influence the quality of the welded joint or the fracture pattern and must be taken into consideration during the evaluation. The PE (PE 63, PE 80 and PE 100), PP, PB and PVDF materials are normally used for sleeve welding with an incorporated electric heating element (HM) and heated tool sleeve welding (HD). Combinations with other materials are also possible, e. g. in the case of the sleeve welding with an incorporated electric heating element of pipes made of PE-X and fittings made of PE 100. The results obtained in the shear tests are not transferable to the creep behaviour of a welded joint.