A study on the determination of mechanical properties of a power law material by its indentation force–depth curve

A study on the determination of plastic properties of metals by instrumented indentation using two sharp indenters

“…However, it is difficult to determine mechanical properties of micro-scale materials via compressive tests. Thus, in recent years, attempts have been made to extract mechanical properties, particularly those of power-law materials, through micro-or nano-indentation tests (Dao et al, 2001;Bucaille et al, 2003;Alkorta et al, 2006;Luo et al, 2006). Recent technological advances have lead to the general availability of depth-sensing instrumented indentation equipment in the micro-and nanoscales (Tabor, 1951;Pharr and Cook, 1990;Field and Swain, 1995;Gerberich et al, 1996;Bolshakov et al, 1997;Alcala et al, 1998;Gouldstone et al, 2000).…”

Determining elastic–plastic properties from indentation data obtained from finite element simulations and experimental results

“…[8,9,14] to determine material properties from indentation load-displacement curves tests. In this study, a non-linear optimisation technique is devised within the MATLAB optimisation toolbox [18], which provides an excellent interface to FE codes such as ABAQUS, through various programming languages such as C and Python.…”

“…In previous work, the determination of three properties E, s y and n) and two properties (s y and n) [5,6,8,9,14] have been performed. In this work, four elastic-plastic parameters (E, s y , n and Possions's ratio, n) are extracted, for the first time, in a non-linear optimisation approach, fully integrated with FE analysis, using results from a single indentation curve.…”

“…In recent years, research efforts [1][2][3][4][5][6][7][8][9][10][11][12][13][14] have been focused on extracting elastic-plastic material properties; Young's modulus (E), yield stress (s y ) and work hardening exponent (n), by using indentation data in which a power law hardening is generally used to characterise these material parameters. In previous work, the determination of three properties E, s y and n) and two properties (s y and n) [5,6,8,9,14] have been performed.…”

Determination of elastic and viscoplastic material properties obtained from indentation tests using a combined finite element analysis and optimization approach

“…This method involves the determination of the mechanical properties of the surface of a given material from loading-unloading curves obtained from micro-or nano-indentation tests, based on the assumption that the material behaves in an elastic-plastic response during the loading phase and the unloading behaviour of the indenter is fully elastic with no plastic deformation [1]. Various approaches have been proposed using dimensionless analysis and numerical optimisation to extract material properties of power law materials with good estimations [2][3][4][5][6][7][8][9].…”