Results of analytical studies of the physical properties of the function and number of empirical macrohardness based on the standard experimental force diagram of kinetic macroindentation by a sphere.An analytical com...Results of analytical studies of the physical properties of the function and number of empirical macrohardness based on the standard experimental force diagram of kinetic macroindentation by a sphere.An analytical comparison method and a criterion for the similarity of the physical and empirical macrohardness of a material are proposed.The physical properties of the hardness measurement process using the Calvert-Johnson method are shown.The physical reasons for the size effect when measuring macrohardness are considered.The universal physical unit and standard of macrohardness of kinetic macroindentation by a sphere is substantiated.展开更多
Three directions of development of kinetic indentation methods.Physical-energetic analysis of the indentation force diagram according to ISO 14577.Physical theory and universal criterion for the macrohardness of a mat...Three directions of development of kinetic indentation methods.Physical-energetic analysis of the indentation force diagram according to ISO 14577.Physical theory and universal criterion for the macrohardness of a material.Model of the physical process,thermomechanical potential,function of the state of the kinetic macroindentation process.Method for determining the physical function and unit of measurement of the kinetic macrohardness of a material.The ratio of the values of the empirical(standard)and physical macrohardness of the material.Physical reason for the appearance of the size effect in empirical indentation methods.The principle of determining the standard value of physical macrohardness.展开更多
The methods and criteria of the physical theory of strength are used. The initial physical and mechanical parameters of the strength of steel 45 were determined analytically. Strength, fatigue and damage to steel were...The methods and criteria of the physical theory of strength are used. The initial physical and mechanical parameters of the strength of steel 45 were determined analytically. Strength, fatigue and damage to steel were calculated for non-stationary mechanical and various thermal loads. The ratio between the physical and generally accepted mechanical parameters of the material strength is determined analytically. The result of the calculation of the new characteristics of the strength of the damaged material is given. The method takes into account plastic deformation, an arbitrary form of stress cycle, temperature mode. Additional physical criteria for evaluating the strength properties are proposed. We use our own calculation programs, which allow us to take into account the changed characteristics of the damaged material for various stress functions. The physical method allows you to analyze and quickly process the rheological data of sensors that control the parameters of the material under load. A method for rapid analysis and comparison of the results of indentation into the material in accordance with ISO 14577 using various indenters is proposed. Physical parameters of the material and new theoretical methods of calculation can be used to assess the properties of materials, monitor the condition and predict the strength and durability of the material of machines during operation.展开更多
文摘Results of analytical studies of the physical properties of the function and number of empirical macrohardness based on the standard experimental force diagram of kinetic macroindentation by a sphere.An analytical comparison method and a criterion for the similarity of the physical and empirical macrohardness of a material are proposed.The physical properties of the hardness measurement process using the Calvert-Johnson method are shown.The physical reasons for the size effect when measuring macrohardness are considered.The universal physical unit and standard of macrohardness of kinetic macroindentation by a sphere is substantiated.
文摘Three directions of development of kinetic indentation methods.Physical-energetic analysis of the indentation force diagram according to ISO 14577.Physical theory and universal criterion for the macrohardness of a material.Model of the physical process,thermomechanical potential,function of the state of the kinetic macroindentation process.Method for determining the physical function and unit of measurement of the kinetic macrohardness of a material.The ratio of the values of the empirical(standard)and physical macrohardness of the material.Physical reason for the appearance of the size effect in empirical indentation methods.The principle of determining the standard value of physical macrohardness.
文摘The methods and criteria of the physical theory of strength are used. The initial physical and mechanical parameters of the strength of steel 45 were determined analytically. Strength, fatigue and damage to steel were calculated for non-stationary mechanical and various thermal loads. The ratio between the physical and generally accepted mechanical parameters of the material strength is determined analytically. The result of the calculation of the new characteristics of the strength of the damaged material is given. The method takes into account plastic deformation, an arbitrary form of stress cycle, temperature mode. Additional physical criteria for evaluating the strength properties are proposed. We use our own calculation programs, which allow us to take into account the changed characteristics of the damaged material for various stress functions. The physical method allows you to analyze and quickly process the rheological data of sensors that control the parameters of the material under load. A method for rapid analysis and comparison of the results of indentation into the material in accordance with ISO 14577 using various indenters is proposed. Physical parameters of the material and new theoretical methods of calculation can be used to assess the properties of materials, monitor the condition and predict the strength and durability of the material of machines during operation.
