STATIC MECHANICAL TEST METHOD OF STEELS AND ALLOYS IN MULTIPLE LOADED STATE Russian patent published in 2013 - IPC G01N3/08 

FIELD: machine building.

SUBSTANCE: flattening of a pipe specimen is performed between two smooth stiff parallel planes at constant speed. The test is conducted till the specimen is destructed; during the test, there recorded is a diagram of dependence of the load applied to the specimen on deformation of the specimen, as per which the following specimen characteristics are determined: elasticity modulus at flattening, proportionality limit at flattening, yield limit at flattening, ultimate destruction strength at flattening, maximum deformation at formation of the first crack, as well as destruction kinetics characterising destruction viscosity degree.

EFFECT: possibility of enlarging the number of evaluated mechanical characteristics determined during flattening testing at maintaining low resource intensity, labour intensity and cost of the test.

1 dwg