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Applying the laws of thermodynamics, a general energy approach is formulated to study the delayed fracture of structural materials under the action of force load (static, cyclic, shunting mode of its change), high temperatures, hydrogen-corrosive media, neutron irradiation. Based on the energy approach process, models and forecasting methods of residual resource of structural elements in the mentioned operating conditions are developed. Based on the energy approach and the basic concepts of the acoustic-emission method, the calculation models in the parameters of the AE signals for the analytical description of the materials and structural elements delayed fracture under exploitation conditions are developed. Residual resource of the elements of power equipment (steam pipeline, elements of steam turbines), oil and gas pipelines, elements of nuclear power plants and the body of the oil hydrocracking reactor, is calculated.

vìsnik nacìonalʹnoï akademìï nauk ukraïni/vìsnik nacìonalʹnoï akademìï nauk ukraïni

Forecasting of residual resource of structural elements of long-term operation in extreme conditions (according to the materials of scientific report at the meeting of the Presidium of NAS of Ukraine, December 23, 2020)