Finite element modeling of nano-indentation technique to characterize thin film coatings

Study Experimental and Numerical Simulations of the Micro-hardness Tests in AL-FE alloy in Different Laser Beam Scanning

“…Next, in this work the micro-hardness (HV) measurements were made as a function of the variation of the laser beam scanning, the images of the impressions provoked by the Vickers penetrator can be visualized in Figure 6, therefore, for the treated region, at 80 mm/s (Figure 6a), at 80 mm/s (Figure 6b), at 80 mm/s ( Figure 6c) and for untreated region ( Figure 6d), moreover, a schematic representation of micro-hardness result in different the laser beam scanning is displayed (Figure 6d). The result is shown in Table 3, whose results are quite similar in different laser beam scanning and has a linear behavior, being slightly low micro-hardness value at 80 mm/s and slightly high at 120 mm/s [12], discoursed this problem, these results are consistent with the microstructures presented in the previous Figure 5, well, at 80 mm/s presented a columnar dendritic growth characteristics, at 100 mm/s presented a compact microstructure similar to the previous one and at 120 mm/s presented a lot more compact microstructure also similar to the previous one. Therefore, the micro-hardness measurements are also in agreement with the order of magnitude of the rounded structure average (see Table 2), for small sizes of the rounded structure the micro-hardness was high.…”

“…Full characterization and finite element model validation require experimental results as well. For example, just to start simulation, must be defined an elastic-plastic behavior by load-displacement curve to be extracted the data [18], reported this study for Al-2 wt.% Fe alloy, beside [12], obtained the data for the simulation from nano-indentation experiment. Meanwhile another proposal, elastic-plastic transition can be divided into two regions in [12], [13] and [14] proposed this study.…”

“…Performing the finite element discretization in the usual way, which involves up the equation system, being that, the plasticity relations must be satisfied on the material level. Meanwhile another proposal, elastic-plastic transition can be divided into two regions, an elastically dominated regime and a plastically dominated regime, [11], [12] and [13] proposed this study. To simulate the micro-indentation, the recommendations of these authors were followed in this work.…”

Development and evaluation of trans-Amadi groundwater parameters: The integration of finite element techniques

“…The pollution is increasing and resultantly groundwater is contaminating (Adrover et al, 2017;Bishop et al, 2017;Bradley et al, 2016;Bricker et al, 2017;Fackrell et al, 2016;Fisher et al, 2016;K'Oreje et al, 2016;LaGro et al, 2017;Lamastra et al, 2016;Ma et al, 2016a;Ma et al, 2016b;Richardson et al, 2017;Robertson et al, 2016;Sanciolo and Gray, 2017;Yan et al, 2017a;Yan et al, 2017b). The integration of finite element techniques is proved to efficient technique for evaluation of trans-Amadi groundwater parameters and could possibly be used for the monitoring of ground water to evaluate the effect of pollution on water quality (Alaboodi and Hussain, 2017;Awais et al, 2017;Boffi and Stenberg, 2017;Hedayat et al, 2017;Jacques et al, 2017;Jeong et al, 2017;Keith et al, 2017;Lee et al, 2017;Liu et al, 2017;Lostado-Lorza et al, 2017;Mironova et al, 2017).…”

Nanomechanical characterization and modeling of anodized porous aluminum oxide thin films with photografted anti-biofouling polymer brushes on their pore walls

“…Modeling and finite element analysis (FEA) is of a great benefit for the prediction and simulation of the mechanical properties of various types of materials, and in particular, thin film coatings (Khan et al 2018;Alaboodi and Hussain 2019). Furthermore, a deeper understanding of the nanoindentation process can be approached by studying the stress and strain distributions in the film and the substrate, which hardly can be analyzed by experimental means.…”