TY - JOUR
T1 - Syntactic foam core metal matrix sandwich composite
T2 - Compressive properties and strain rate effects
AU - Yaseer Omar, Mohammed
AU - Xiang, Chongchen
AU - Gupta, Nikhil
AU - Strbik, Oliver M.
AU - Cho, Kyu
N1 - Funding Information:
This research is sponsored by the U.S. Army Research Laboratory contract W911NF-10-2-0084 with DST and the Cooperative Agreement W911NF-11-2-0096 with NYU. Partial support from NSF grant IIA-445686 is also acknowledged. The authors acknowledge scholarship from the NYUAD Vice Chancellor’s office to Mohammed. Dr. Magued Iskander is thanked for providing access to the high speed camera system. Dr. Dung Dinh Luong, Chongchen Xiang and Steven E. Zeltmann are thanked for help during the research work.
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/9/3
Y1 - 2015/9/3
N2 - The present work is the first attempt to study metal matrix syntactic foam core sandwich composites. The sandwich is studied for microstructure and compressive properties at quasi-static and high strain rates. Under quasi-static compressive conditions, specimens were tested in the flatwise and edgewise orientations. The compressive strength, yield strength and plateau stress were higher in the flatwise orientation. Furthermore, both orientations for the sandwich composites showed a higher specific compressive strength and specific yield strength than the foam core alone. Failure initiated in the particles in the flatwise orientation, but in the carbon fabrics in the edgewise orientation. The results show that the fabric had a reinforcing effect under quasi-static conditions. The high strain rate (HSR) characterization was conducted in the strain rate range 525-845s-1 using a split-Hopkinson pressure bar set-up equipped with a high speed image acquisition system. Within this strain rate range, the compressive strength of the sandwich is similar to that of the syntactic foam core alone. Upon review, the syntactic foam core metal matrix sandwich outperforms most of the syntactic foams in terms of energy absorption and compressive strength at comparable density levels.
AB - The present work is the first attempt to study metal matrix syntactic foam core sandwich composites. The sandwich is studied for microstructure and compressive properties at quasi-static and high strain rates. Under quasi-static compressive conditions, specimens were tested in the flatwise and edgewise orientations. The compressive strength, yield strength and plateau stress were higher in the flatwise orientation. Furthermore, both orientations for the sandwich composites showed a higher specific compressive strength and specific yield strength than the foam core alone. Failure initiated in the particles in the flatwise orientation, but in the carbon fabrics in the edgewise orientation. The results show that the fabric had a reinforcing effect under quasi-static conditions. The high strain rate (HSR) characterization was conducted in the strain rate range 525-845s-1 using a split-Hopkinson pressure bar set-up equipped with a high speed image acquisition system. Within this strain rate range, the compressive strength of the sandwich is similar to that of the syntactic foam core alone. Upon review, the syntactic foam core metal matrix sandwich outperforms most of the syntactic foams in terms of energy absorption and compressive strength at comparable density levels.
KW - Compression testing
KW - High strain rate compression
KW - Metal matrix composite
KW - Sandwich composite
KW - Syntactic foam
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U2 - 10.1016/j.msea.2015.07.033
DO - 10.1016/j.msea.2015.07.033
M3 - Article
AN - SCOPUS:84939439689
SN - 0921-5093
VL - 643
SP - 156
EP - 168
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ER -