Hybrid Syntactic Foams of Metal – Fly Ash Cenosphere – Clay

2016 ◽  
Vol 674 ◽  
pp. 35-40 ◽  
Author(s):  
Andrej Shishkin ◽  
Viktor Mironov ◽  
Vjacheslav Zemchenkov ◽  
Maksim Antonov ◽  
Irina Hussainova
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Firing Temperature ◽  
Material Properties ◽  
Syntactic Foam ◽  
Average Density ◽  
Syntactic Foams ◽  
Syntactic Form ◽  
Fly Ash Cenosphere ◽  
Fly Ash Cenospheres

This paper addresses an innovative syntactic foam produced out of metal powder (Fe), fly ash cenospheres (CS) and clay ceramic syntactic foams composite material (CM). Due to the low density of CS (bulk density - 0.38 g/cm3), the average density of these foams is about 2.6-2.9 g/cm3. It was found that CS undergoes phase transformation during thermal treatment at a temperature of 1200°C. Microstructural observations reveal a uniform distribution of CS and Fe particles in the composite. Compressive strength, and friction coefficient of obtained Fe/CS CM are in the range between 149 - 344 MPa and 0.15 - 1.1, respectively. Dependence of compressive strength on firing temperature is demonstrated exhibiting the maximum at 344 MPa; however, dependence of coefficient of friction on a material properties, obtained at different firing temperature exhibits the minimum value of 0.15 at the firing temperature of 1150 °C. The obtained syntactic form was shown to be a candidate for wear resistant applications.

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.

Structure Properties Relationship Studies of Vinyl Ester Hybrid Syntactic Foam

2021 ◽  
pp. 368-394
Author(s):  
Pravin R. Kubade ◽  
Amol N. Patil ◽  
Hrushikesh B. Kulkarni
Keyword(s):  
Vinyl Ester ◽  
Syntactic Foam ◽  
Fracture Mechanisms ◽  
Syntactic Foams ◽  
Static Compression ◽  
Molding Method ◽  
Deformation And Fracture ◽  
The Matrix ◽  
Fly Ash Cenosphere ◽  
Izod Impact

Syntactic foam is the porous composite produced by mixing prefabricated hollow spherical particle into the matrix. Syntactic foams are used as energy absorption sandwich core for several applications like marine, automotive, and aerospace. In this work, low density hollow glass microspheres are hybridized with fly ash cenosphere in Bisphenol-A epoxy-based vinyl ester matrix. Hybrid syntactic foams is created with 60% total filler content. Within these hybrid systems internal composition of two fillers were varied in a step of 25 vol% with respect to each other. Hybrid syntactic foams are prepared by the hand lay-up (molding) method. The physical characterization parameter contains density and matrix porosity whereas tensile, quasi-static compression, flexural (3-point bending), Izod impact, and micro Vickers hardness are grouped as mechanical characterization parameters. Scanning electron microscopy was performed on fractured surfaces to examine deformation and fracture mechanisms related with each loading condition.

Compressive and flexural properties of functionally graded fly ash cenosphere-epoxy resin syntactic foams

2014 ◽  
Vol 36 (4) ◽  
pp. 685-693 ◽  
Author(s):  
Mrityunjay Doddamani ◽  
Kishore ◽  
Vasanth Chakravarthy Shunmugasamy ◽  
Nikhil Gupta ◽  
H.B. Vijayakumar
Keyword(s):  
Fly Ash ◽  
Epoxy Resin ◽  
Functionally Graded ◽  
Flexural Properties ◽  
Syntactic Foams ◽  
Fly Ash Cenosphere

Influence of surface modification on wear behavior of fly ash cenosphere/epoxy syntactic foam

Wear ◽  
2018 ◽  
Vol 414-415 ◽  
pp. 327-340 ◽  
Author(s):  
Kiran Shahapurkar ◽  
Vikas Bapurao Chavan ◽  
Mrityunjay Doddamani ◽  
G.C. Mohan Kumar
Keyword(s):  
Surface Modification ◽  
Fly Ash ◽  
Wear Behavior ◽  
Syntactic Foam ◽  
Fly Ash Cenosphere

Effect of Glass Microballoons Size on Compressive Strength of Syntactic Foams

2011 ◽  
Vol 321 ◽  
pp. 7-10 ◽  
Author(s):  
Zhuo Chen ◽  
Zhi Xiong Huang ◽  
Yan Qin ◽  
Min Xian Shi ◽  
Qi Lin Mei ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Compressive Strength ◽  
Size Distribution ◽  
Syntactic Foam ◽  
Syntactic Foams ◽  
Static Compression ◽  
Distribution Ranges ◽  
Glass Microballoons ◽  
Quasi Static Compression

In this work, syntactic foams made of microballoons having same wall thickness ratio but with different particle size was prepared. Microballoons of three size distribution ranges were selected .The property of the syntactic foams were studied by quasi-static compression test. The experimental results show the microballoons size doesn’t influent the mechanical properties of the syntactic foam significantly. The failure mode of the syntactic foams was also studied in this work.

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