A new methodology to extract viscoelactic-plastic material properties of a matrix material in a composite through Nanoindentation is discussed in this study. A material model is developed to account for viscoelastic-plastic effects and is incorporated in a parametric Finite Element (FE) analysis. The results from this analysis are used to construct a surrogate model to allow for fast evaluations of the simulated experiments, which in turn can be used to match calculations with real experiments. The surrogate model predicts the FE results within an average error of 2.9%. The viscoelastic properties are recovered with an error of 9.4% and 9.8% respectively, when comparing the surrogate model with FE simulations.

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