METHOD OF TESTING METALS FOR BENDING WITH STRETCHING Russian patent published in 2016 - IPC G01N3/08 

FIELD: test equipment.

SUBSTANCE: invention relates to mechanical tests of metals and alloys, namely to tests at bending with stretching, and can be used during testing of various structures operated in complicated conditions of loading, calculate strength structures operated at bending with stretching. Ends of the tested sample is placed on metal supports, the deforming force in the middle of the sample with the help of mandrel and results are processed. Ends of the sample is fixed in supports by means of grippers to allow turn of each grip. Deformation is carried out to break the sample with provision of minimum friction between sample and mandrel and at stretching diagram mechanical characteristics.

EFFECT: obtaining reliable values of mechanical properties and providing high accuracy of calculations for strength structures operated at bending with stretching, including pipes operating under conditions of inclined wells, as well as wire, and pipes in making with winding on the drum.

1 cl, 1 tbl, 1 dwg