FIELD: plastic pipes.
SUBSTANCE: invention relates to the field of testing of a boxed welded joint of polymer pipes and can be used to determine the strength of a welded joint of polymer pipes. When testing a boxed welded joint of polymer pipes to determine the strength of a welded joint of polymer pipes at a speed of expansion of the clamps of the testing machine equal to (20± 2.0) mm/min, a sample is cut, after which grooves are cut on both sides of the sample along the entire length of the weld to remove part of the fusion zone with a decrease in the area of the weld to minimize the likelihood of sample rupture along the base material of the pipe or the box. Then, peel tests are carried out when the clamps of the testing machine are moved apart.
EFFECT: simplification of the method for determining the strength of a boxed welded joint precisely at the weld.
1 cl, 1 dwg
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