Measuring the cell wall mechanical properties of Al-alloy foams using the nanoindentation method

Effect of oxygen plasma treatment on the bonding strength of CFRP/aluminum foam composite

“…Hasan et al [10] examined the cell wall mechanical properties of aluminum foams using a nanoindentation method, and described the lower elastic modulus values of aluminum foams in comparison with a conventional tensile test method. In addition, Campana and Pilone [12] investigated the effect of wall microstructure and morphometric parameters on the crush behavior of aluminum foams.…”

“…In particular, researchers have investigated the mechanical behavior and crash energy absorption of aluminum foam materials [1][2][3][4][5][6][7]. In addition, efforts have been made to characterize the microscopic mechanism of these materials [10][11].…”

Cell wall mechanical properties of closed-cell Al foam

“…Another measurement method using nanoindentation has been recently introduced to measure cell wall mechanical properties (Kim and Tunvir, 2006;Hasan et al, 2008). This method, however, has some difficulties in obtaining actual cell wall mechanical properties: it usually uses the indentation load-displacement curves, which include considerable variations arising from the inhomogeneous microstructure of the cell wall cross section, and can not account for the effect of cell wall oxidation in the measurement of the mechanical properties.…”

Experimental and numerical investigation of single pores for identification of effective metal foams properties

“…This leads to wrong results compared to real experimental data. The simulations overestimate the stress‐strain response and lead to stiffnesses that are too large, since the micro mechanical properties and the microstructure of individual struts or membranes differ significantly from bulk properties, which is due to the manufacturing methods . Hence, micro mechanical testing is a new, challenging research field.…”

“…The simulations overestimate the stress-strain response and lead to stiffnesses that are too large, [4,29,[39][40][41] since the micro mechanical properties and the microstructure of individual struts or membranes differ significantly from bulk properties, which is due to the manufacturing methods. [17,21,25,26,39,40] Hence, micro mechanical testing is a new, challenging research field. Because of the small dimensions and uncertain boundary conditions due to the complex geometry of real struts and the complex grain structure, it can become quite a difficult and time-consuming task to determine reproducible micro-material properties.…”