Quasi-static and dynamic compression behavior of glass cenospheres/5A03 syntactic foam and its sandwich structure

Compression‐compression fatigue performance of aluminium matrix composite foams reinforced by carbon nanotubes

“…These composite foams exhibited varying degrees of enhancement of mechanical properties owing to the high stiffness of reinforcements. However, the serious deformation brittleness as well as the weak interfacial bonding of reinforcement and Al matrix appears, resulting in a limited increase of composite foams for energy absorption performance …”

“…However, the serious deformation brittleness as well as the weak interfacial bonding of reinforcement and Al matrix appears, resulting in a limited increase of composite foams for energy absorption performance. 15,16 As a typical nanomaterial, carbon nanotubes (CNTs) are considered as the excellent reinforcement because of their low density, unique mechanical, electrical, and chemical properties. [17][18][19] Thus, lightweight and high specific strength metal matrix composites reinforced by CNTs become the researching focus in the recent years.…”

On the Mechanical Properties of Aluminum Matrix Syntactic Foams

“…[3][4][5][6] Besides this, MMSFs can be integrated with the concept of unidirectionally (or multi directionally) reinforced composites (Figure 1d). [7] Theoretically, MMSFs can be produced from any kind of metals, however their matrix is usually a grade of lightweight alloy (most commonly from the family of Al [8][9][10][11][12][13][14][15][16][17][18] or Mg [19][20][21][22] alloys). The predecessors of MMSFs were produced with polymer matrix and they were developed for deep sea applications, such as the insulation of oil pipes or submarines.…”

Molten Metal Infiltration Methods to Process Metal Matrix Syntactic Foams

“…Cellular metallic materials (foams, honeycombs and lattices) have great combinations of mechanical and physical properties [1]. The conversion of bulk metals into a cellular shape, i.e., the invention of foams, has been driven by the need to achieve lightweight engineering materials with increased specific strength, high damping, exceptional energy absorbing capabilities [2] and high thermal isolation [3].…”

“…Several studies have reported the utilization of natural-made fillers: Expanded vermiculite [45], pumice [40], lightweight expanded clay aggregate (LECA) [3,46], expanded perlite (EP) [47,48] and expanded glass (EG) [2,49]. In other cases, commercial or human-made lightweight aggregates have been successfully used: fly-ash cenospheres (FAC) [50][51][52], glass microballoons (GMB) [1,5], ceramic spheres (CMB) [11,53,54], carbon hollow spheres [55] and hollow metallic spheres [56]. Pores can contain traces of various gases like CO 2 , N 2 , H 2 O, CO and O 2 [57] as a result of fillers manufacturing methods.Apart from these two physical properties of reinforcements (chemical compositions and inner nature), there are several properties that must be controlled to optimize characteristics such as porosity (thickness-to-size ratio, shell porosity, compressive collapse strength, shrinkage and melting temperature) and wettability (surface roughness, coating properties and interface chemical reactions).In terms of size, Puga et al [3] observed that porous nature brittle fillers (such as LECA) tend to increase MMSF yield strength whilst fillers size and density increases and decreases respectively.…”