Identification of mechanical properties based on Nanoindentation experiment

Martin Lamut, Space-SI

CHALLENGE - In the design of advanced engineering materials, generally a small sample of material is produced. If material properties could be extracted from the sample material within one experimental test, the material design process would be more efficient. A process of a nanoindentation test is presented as a proposed solution in this project.

SOLUTION - The experiment is conducted in a multidisciplinary laboratory for space research, SPACE-SI, Slovenia. It involves using a thermal vacuum chamber, ISO 8 clean room, Helmholtz system, and a nano indenter. Mechanical properties of specimen materials are identified with physical experimentation followed by simulation and optimization to fit the simulation result to the experimental data. The FEM module is taken from AceFEM, the automatic numerical code generation is done in AceGen, and modeFRONTIER is the driver for the optimization process.







BENEFITS - Results prove that a nanoindentation test combined with inverse analysis can accurately provide mechanical properties in the form of the yelding point, Young modulus, work hardening exponent and material hardness. modeFRONTIER, chosen as the optimization module brought quick results in this methodology.