scholarly journals Fatigue tests of zinc aluminium matrix syntactic foams filled with expanded perlite

2020 ◽  
Vol 903 ◽  
pp. 012050
Author(s):  
A Kemény ◽  
B Katona ◽  
N Movahedi ◽  
T Fiedler
Keyword(s):  
Fatigue Tests ◽  
Aluminium Matrix ◽  
Syntactic Foams ◽  
Expanded Perlite

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.

Characterisation of aluminium matrix syntactic foams under drop weight impact

2014 ◽  
Vol 59 ◽  
pp. 296-302 ◽  
Author(s):  
M. Altenaiji ◽  
Z.W. Guan ◽  
W.J. Cantwell ◽  
Y. Zhao ◽  
G.K. Schleyer
Keyword(s):  
Aluminium Matrix ◽  
Syntactic Foams ◽  
Drop Weight ◽  
Weight Impact

scholarly journals Compressive characteristics and low frequency damping of aluminium matrix syntactic foams

2019 ◽  
Vol 739 ◽  
pp. 140-148 ◽  
Author(s):  
Bálint Katona ◽  
Attila Szlancsik ◽  
Tamás Tábi ◽  
Imre Norbert Orbulov
Keyword(s):  
Low Frequency ◽  
Aluminium Matrix ◽  
Syntactic Foams

scholarly journals Fatigue properties of EP/A356 aluminium matrix syntactic foams with different densities

2018 ◽  
Vol 426 ◽  
pp. 012045 ◽  
Author(s):  
A Szlancsik ◽  
B Katona ◽  
I N Orbulov ◽  
M Taherishargh ◽  
T Fiedler
Keyword(s):  
Aluminium Matrix ◽  
Fatigue Properties ◽  
Syntactic Foams

Characterisation of Aluminium Matrix Syntactic Foams Dynamic Loading

2014 ◽  
Vol 564 ◽  
pp. 449-454 ◽  
Author(s):  
Mohamed Altenaiji ◽  
Zhong Wei Guan ◽  
W. Cantwell ◽  
Y.Y. Zhao
Keyword(s):  
Energy Absorption ◽  
Dynamic Loading ◽  
Mechanical Performance ◽  
High Strain ◽  
Split Hopkinson Pressure Bar ◽  
Aluminium Matrix ◽  
Syntactic Foams ◽  
Loading Conditions ◽  
Static Compression ◽  
Drop Weight

It is a challenging task to develop a lightweight but also strong material with energy absorption capability to be used in vehicles to withstand impact and blast. This paper reports the research results on Aluminium syntactic foams as possible core materials for protection of military vehicles. In order to optimize their mechanical performance the characterisation of the foam behaviour at high strain rates and identification of the underlying mechanisms have been conducted. Mechanical tests were carried out on syntactic foams under high strain rate compression loading. The drop weight and split Hopkinson pressure bar (SHPB) techniques have been used to obtain data on the material behaviour under dynamic loading conditions. It was found that some samples show 30% higher plateau stress in the drop weight test than that of the quasi-static compression. In addition, it was found that the energy absorption of the aluminium matrix syntactic foam is higher than that of the ordinary aluminium foam. Experimental results from the above investigation are compared with the finite element predictions under the same loading conditions. Reasonably good correlation is obtained. The discussion on developing numerical modelling and the related validation are also given.

scholarly journals Fatigue properties of expanded perlite/aluminum syntactic foams

2016 ◽  
Vol 51 (6) ◽  
pp. 773-781 ◽  
Author(s):  
Mehdi Taherishargh ◽  
Bálint Katona ◽  
Thomas Fiedler ◽  
Imre Norbert Orbulov
Keyword(s):  
Metal Matrix ◽  
Fatigue Testing ◽  
Standard Procedure ◽  
Failure Mechanisms ◽  
Aluminum Matrix ◽  
Fatigue Properties ◽  
Metallic Foam ◽  
Syntactic Foams ◽  
Expanded Perlite ◽  
Pressure Infiltration

The main purpose of this paper is to present the basic fatigue properties of metal matrix syntactic foams. The investigated syntactic foams consisting of expanded perlite and A356 aluminum matrix were produced using an inert gas pressure infiltration technique. The obtained foams were subjected to cyclic compressive loading in order to investigate their fatigue properties. The standard procedure for cyclic fatigue testing was slightly modified to account for the variation of porosity and strength which is typical for metallic foam samples. This approach allows the direct comparison of the fatigue test results between all investigated samples. Depending on the applied load level, two different failure mechanisms were identified that resulted in characteristic deformation – loading cycle curves. The failure mechanisms were further investigated on the microstructural scale: traces of fatigue beachmarks and extensive plastic deformation were found. Furthermore, Wöhler-like deformation – lifetime diagrams were created in order to predict the expected lifetime of the properties of metal matrix syntactic foams .

Sign in / Sign up

Export Citation Format

Share Document