High strain rate compressive characterization of aluminum alloy/fly ash cenosphere composites

Abstract

Research Summary metal matrix syntactic Foams How would you… …describe the overall signifi cance of this paper? The paper demonstrates: (1) the use of an environmentally hazardous waste material, fl y ash, in developing high performance composite materials; (2) the rate of compression can change the mechanical properties of composites; and (3) widespread use of aluminum and aluminum matrix composites in automobiles requires better understanding of material properties at different strain rates. …describe this work to a materials science and engineering professional with no experience in your technical specialty? This work discovers that the matrix alloy does not show dependence of mechanical properties on the rate of compression, but the composite does. Use of hollow particles as fi llers makes the material lighter and increases its energy absorption capabilities. …describe this work to a layperson? Aluminum is widely used in automobile and aircraft structures, which operate at high speeds. Safety in these structures can be improved by evaluating the material properties at high rates of compression. This work reports that the properties of aluminum matrix composites can be dependent on the rate of compression. Metal foams are expected to absorb energy under compression and improve safety. A porous composite material can provide insight into developing safer material systems for such applications.

Magnesium Matrix Composite Foams—Density, Mechanical Properties, and Applications

“…The yield strength values for various types of MMSFs, including aluminum, titanium, and iron matrix syntactic foams, are plotted in Figure 10 [38,39,43,[47][48][49][50][51][52][53][54][55]. AZ91D and ZC63 matrix syntactic foams are also included in this graph.…”

Compressive behaviour of aluminium matrix syntactic foams reinforced by iron hollow spheres

“…Luong et al investigated the quasi-static and high strain rate compressive properties of Al4032 / cenosphere composites. While the matrix did not show any strain rate sensitivity, the composite showed higher strength and energy absorption capability at higher strain rates [34]. Mondal et al performed wide range of materials testing such as classical quasi-static [35], high strain rate [32] or elevated temperature compression [36] tests, wear tests [37,38] and finite element analyses [39].…”

Characteristic compressive properties of hybrid metal matrix syntactic foams

“…The compression and low-velocity impact behaviour of ASFs were also studied by the same research group [52]. Luong et al [53][54][55] investigated the strain rate sensitivity of Al and Mg based syntactic foams. The MMSFs showed higher strength and higher energy absorption capability at higher strain rates.…”