Sochi-Tumiotto Trial

Sotjiu-tumiotto test is a method of testing to determine the conditional yield strength and resistance to brittle fracture of steel wire at subzero temperatures. The test is performed in a dry state and in several atmospheres of inert gases. This test allows you to determine the quality characteristics of the wire and its suitability for use in various industrial applications. During testing, the wire is suspended at one end from the hook of the testing machine, and its other end is fixed on a vertical plane using a plate. The wire is then subjected to a tensile force, which gradually increases. When a certain level of stretch is reached, the wire begins to deform and thread failure may occur. This occurs when the load exceeds the maximum permissible value. Based on the test results, the conditional yield strength of the wire and the resistance to brittle fracture are determined. The yield strength is calculated by the formula: Y=N/∆L, where N is the tensile load in Newtons, ∆L is the deformation in decimeters. Brittle fracture resistance is calculated as the difference between the total breaking force and the traction force at the moment of fracture initiation. Both of these parameters are used in engineering calculations and design of various structures and objects. This test method is of high importance for various fields of application, such as manufacturing, construction, mining, energy, etc., as it allows one to establish compliance of manufactured products with specified standards and requirements.