Determination of mechanical properties from depth-sensing indentation data and results of finite element modeling

10th International School-Conference on Materials for Extreme Environment: Development, Production and Application

Isaenkova, M.G.^1 ; Perlovich, Yu A.^1 ; Krymskaya, O.A.^1 ; Zhuk, D.I.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway, 31, Moscow

115409, Russia^1

关键词: 3D finite element model;    Calculation algorithms;    Depth sensing indentation;    Indentation process;    Instrumented indentation;    Material behavior;    Mechanical properties of materials;    Test materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/130/1/012053/pdf
DOI  :  10.1088/1757-899X/130/1/012053

来源: IOP

【 摘 要 】

3D finite element model of indentation process with Berkovich tip was created. Using this model with different type of test materials, several series of calculations were made. These calculations lead to determination of material behavior features during indentation. Relations between material properties and its behavior during instrumented indentation were used for construction of dimensionless functions required for development the calculation algorithm, suitable to determine mechanical properties of materials by results of the depth-sensing indentation. Results of mechanical properties determination using elaborated algorithm for AISI 1020 steel grade were compared to properties obtained with standard compression tests. These two results differ by less than 10% for yield stress that evidence of a good accuracy of the proposed technique.