A combined experimental and finite element approach for determining mechanical properties of aluminium alloys by nanoindentation

Microstructural and Micromechanical Effects of Cold Roll-forming on High Strength Dual Phase Steels

“…The curve exhibits a parabolic behaviour in the loading section and a power-law behavior in the unloading one 21 . The elastic recovery exhibited during the unloading section is small, as expected in metal alloys [30][31][32] . Figure 10 shows the hardness obtained for the DP1000 blank and bent specimens at the two analysed indentation depths of 500 nm and 5000 nm.…”

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

“…13(b) shows the load-displacement curve from Ref. [27] and our own ABAQUS FE simulation, based on the material properties in Table 6, which clearly shows that there are some small differences between the experimental test data and the corresponding FE solution. This is expected since the effects of friction, sharpness of the indenter tip, the indentation size effects in the real-life experimental indentation tests [25] and strain rate effects are not taken into account in the FE analysis.…”

“…The FE models consist of two different parts, an indenter and a specimen. The size of the specimen is 2 mm  2 mm and the total indenter displacement is 2000 nm [27]. All FE modelling details are the same as in Section 4.2.1.…”

“…To explore the feasibility and robustness of the optimisation algorithm in real-life applications, it is appropriate to consider an experimental load-displacement curve from a laboratory test to extract the material properties. Experimental load-displacement curves for Al 2024-T351 from Khan et al [27] are used in this study based on an MTS Nanoindenter XP with a Berkovich tip.…”

“…13(a) shows the load-displacement curves from the experimental indentation test and a FE simulation performed in Ref. [27]. This experimental load-displacement curve is used in this study and is regenerated by a digitised graph programme.…”