Permanent indentation characterization for low-velocity impact modelling using three-point bending test

Using the Finite Element Analysis Method to Study the 3-point Bending Test for the Characterization of the Adherence

An elastic finite element analysis was conducted to evaluate the stress distribution in the initiation zone of the adhesive rupture during the 3-point bending test. This test is used to measure the adherence between a polyepoxy adhesive and aluminum alloy with different surface treatments. The purpose is to compare, in the high stress concentration areas, the stress fields calculated using fini...

Analytical Prediction of Indentation and Low-Velocity Impact Responses of Fully Backed Composite Sandwich Plates

In this paper, static indentation and low velocity impact responses of a fully backed composite sandwich plate subjected to a rigid flat-ended cylindrical indenter/impactor are analytically investigated. The analysis is nonlinear due to nonlinear strain-displacement relation. In contrast to the existed analytical models for the indentation of composite sandwich plates, the stacking sequence of ...

A Comparison of Low-Velocity Impact and Quasi-Static Indentation

Indentation of aluminium foam at low velocity

The indentation behaviour of aluminium foams at low velocity (10m/s ∼ 30m/s) was investigated both in experiments and numerical simulation in this paper. A flat-ended indenter was used and the force-displacement history was recorded. The Split Hopkinson Pressure bar was used to obtain the indentation velocity and forces in the dynamic experiments. Because of the low strength of the aluminium fo...

A Contact Point Detection for Indentation Test of Low-k Film

− In the instrumented indentation test including nanoindentation, the mechanical parameters are calculated by test force and indenter contact/surface area. The area is determined as a function of depth, which is measured as the displacement from surface of sample. Therefore how to determine the surface is important, however, it is not easy to determine sample surface exactly during the test. Be...