Compressive properties of aluminium matrix syntactic foams

2012 ◽  
Vol 555 ◽  
pp. 52-56 ◽  
Author(s):  
Imre Norbert Orbulov
Keyword(s):  
Aluminium Matrix ◽  
Syntactic Foams ◽  
Compressive Properties

Preparation and Characteristic of Different Hollow Microspheres Filled Syntactic Foams

2014 ◽  
Vol 809-810 ◽  
pp. 237-242
Author(s):  
Xin Jin ◽  
He Yi Ge ◽  
Ping Wang ◽  
Zhong Yuan Pan ◽  
Juan Chen
Keyword(s):  
Interfacial Adhesion ◽  
Syntactic Foam ◽  
Weight Fraction ◽  
Hollow Microspheres ◽  
Syntactic Foams ◽  
Polystyrene Microspheres ◽  
Compressive Properties ◽  
Hollow Glass Microspheres ◽  
Important Improvement ◽  
The Impact

In this study, hollow glass microspheres (HGM) and hollow polystyrene microspheres (HPSM) have been employed as fillers in epoxy resin to prepare the syntactic foam. A kind of good performance composite was prepared. The effects of presence of various hollow microspheres on the impact and compressive properties of syntactic foams are studied. Weight fraction of HPSM and HGM for the syntactic foams varies up to 2.0 wt% and 25 wt%, respectively. The results show that the coupling agent can induce the interfacial adhesion between the HGM and the resin and help HGM uniformly disperse in the resin and hence result in better mechanical properties of composite. On the other hand, the effect of HPSM for the composite density is greater than that of HGM. The addition of a small percentage of HPSM helps produce an important improvement in the low density of syntactic foam. The syntactic foam has uniform stability component and the excellent integrative performances. Fabricated syntactic foams had compression strength of 51.96 MPa and density of 0.671 g/cm3.

Gravity casting of aluminum-Al2O3 hollow sphere syntactic foams for improved compressive properties

2020 ◽  
Vol 27 (4) ◽  
pp. 1127-1137
Author(s):  
Liwen Pan ◽  
Dewang Rao ◽  
Yiwang Yang ◽  
Junyi Qiu ◽  
Jianbo Sun ◽  
...  
Keyword(s):  
Hollow Sphere ◽  
Syntactic Foams ◽  
Compressive Properties ◽  
Gravity Casting

scholarly journals Characterisation of Aluminium Matrix Syntactic Foams under Static and Dynamic Loading

2011 ◽  
Vol 82 ◽  
pp. 142-147 ◽  
Author(s):  
Mohamed Altenaiji ◽  
Graham K. Schleyer ◽  
Yo Yang Zhao
Keyword(s):  
Compressive Strength ◽  
Porous Ceramic ◽  
Syntactic Foam ◽  
Absorption Capacity ◽  
Core Material ◽  
Aluminium Matrix ◽  
Test Machine ◽  
Syntactic Foams ◽  
Pressure Infiltration ◽  
Energy Absorbing

Development of a lightweight, strong and energy-absorbing material that has potential application for the protection of vehicles and occupants against impact and blast, is a difficult challenge facing the materials community. Aluminium matrix syntactic foams will be investigated as a possible core material as part of a multi-layered protection system for military vehicles. Aluminium matrix syntactic foams are composite materials consisting of an aluminium matrix implanted with hollow or porous ceramic particles. This paper investigates the mechanical properties of aluminium matrix syntactic foam with different sizes of ceramic micro-spheres and different grades of aluminium, fabricated by the pressure infiltration method. The static crushing behaviour of the foam was investigated under two test conditions using an Instron 4505 machine. Results are compared and discussed. The dynamic compressive response was investigated using a drop-weight impact test machine. It was found that the particle size of the ceramic micro-spheres and the grade of the aluminium metal have a significant effect on the energy absorption capacity of the material. The compressive strength of the syntactic foam was found to increase with increasing compressive strength of the metal matrix.

Compressive Stress of Syntactic Foam: Effect of rNBR Particles Reinforced Epoxy Macrospheres (rNBR-EM)

2018 ◽  
Vol 280 ◽  
pp. 301-307
Author(s):  
Z. Zakaria ◽  
C.Y. Yao
Keyword(s):  
Compressive Strength ◽  
Physical Properties ◽  
Compressive Stress ◽  
Energy Absorption ◽  
Wall Thickness ◽  
Syntactic Foam ◽  
Radius Ratio ◽  
Butadiene Rubber ◽  
Syntactic Foams ◽  
Compressive Properties

This research focuses on the effect of rejected nitrile butadiene rubber (rNBR) gloves particles reinforced epoxy macrospheres (EM) on the physical properties and compressive stress of syntactic foam. Adding rNBR particles on the surface of macrospheres can increase the energy absorption as a result of improving the compressive properties of syntactic foam. Three types of macrospheres have been produced for the fabrication of syntactic foam, namely EM without rNBR, 1-layer rNBR-EM and 2-layer rNBR-EM. The results showed that increased rNBR particles layer on macrospheres has increased the wall thickness, and reduced the radius ratio of macrospheres as well as increased the density of syntactic foams. The compressive strength and modulus of syntactic foam with 2-rNBR-EM increased compared to the syntactic foams of 1-rNBR-EM and EM without rNBR. In addition, the toughness of the 2-rNBR-EM increased compared to the syntactic foams of 1-rNBR-EM and EM without rNBR.

Effect of hollow sphere size and size distribution on the quasi-static and high strain rate compressive properties of Al-A380–Al2O3 syntactic foams

2013 ◽  
Vol 49 (3) ◽  
pp. 1267-1278 ◽  
Author(s):  
Joseph A. Santa Maria ◽  
Benjamin F. Schultz ◽  
J. B. Ferguson ◽  
Nikhil Gupta ◽  
Pradeep K. Rohatgi
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Size Distribution ◽  
Hollow Sphere ◽  
High Strain ◽  
Syntactic Foams ◽  
Compressive Properties ◽  
Sphere Size

On the Processing and Compressive Properties of Cellular Foams of Cyanate Ester

2009 ◽  
Vol 28 (3) ◽  
pp. 193-205 ◽  
Author(s):  
Bibin John ◽  
C.P. Reghunadhan Nair ◽  
K.N. Ninan
Keyword(s):  
Compressive Strength ◽  
Cyanate Ester ◽  
Syntactic Foams ◽  
Compressive Properties ◽  
Decomposition Products ◽  
Foaming Agent ◽  
Accelerated Curing ◽  
Cellular Foams

Cellular foams based on the cyanate ester, viz., (2,2-bis (4-cyanatophenyl) propane) have been processed. Azodicarbonamide (ADC) was used as the foaming agent. Cyanate ester foams with different densities were processed by varying the concentration of the foaming agent. The effect of foaming agent concentration on the density and compressive properties of the resultant foams has been investigated. The density of the foams was found to be inversely proportional to the concentration of foaming agent up to 2 parts per hundred parts of resin (phr). The increase in density beyond a foaming agent concentration of 2 phr has been attributed to the accelerated curing of cyanate ester, catalysed by the decomposition products of ADC. The compressive strength and modulus of the foams were found to be directly proportional to the density. The specific compressive properties also followed the same trend. Cyanate ester cellular foams exhibited better compressive properties in comparison to similar foams of other thermosets. However, the compressive properties of these cellular foams were inferior to those of the corresponding syntactic foams of comparable density.

Sign in / Sign up

Export Citation Format

Share Document