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Investigation on the impact behavior of Al 2 O 3-SiC-MgO nanoceramic/metal laminated composite

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Abstract

Lightweight laminated composites containing a ceramic front layer and a metallic backing layer were used in order to protect people, moving equipment, and mobile vehicles from high velocity impact and the increased mobility of mobile vehicles. In this study, by adding10 vol% SiC and 500 ppm MgO nanoscale particles on the microstructure of Al 2 O 3 matrix and applying optimum sintering conditions, ceramic performance against high-speed projectile impact was improved. To perform this investigation, a number of target samples with two different types of front layers (alumina and Al 2 O 3-SiC-MgO nanocomposite ceramic) were produced. Impact tests were conducted on these samples using 7.62 mm projectiles with a velocity of 820 ± 15 m/s. The amount of bulge and bending of the backing layer caused by impact tests was measured. The results of the impact tests on the samples made of Al 2 O 3-SiC-MgO nanocomposite ceramics and alumina were also compared and analyzed. The results indicate that the substitution of Al 2 O 3-SiC-MgO ceramic layer — which is proffered in this paper — instead of pure alumina ceramic layer, decreases the areal-density of the samples by at least 30% and improves mechanical properties by about a 60% increase in flexural strength and 100% growth of the energy distribution factor, which impressively increases impact energy absorption.

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Authors and Affiliations

  1. Mechanical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), 15914, Tehran, Iran

    Ali Asadi, Ali Sadough Vanini & Amin Jabbari

Authors
  1. Ali Asadi
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  2. Ali Sadough Vanini
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  3. Amin Jabbari
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Correspondence to Ali Asadi.

Additional information

This paper was recommended for publication in revised form by Associate Editor Mohammad Abdul Aziz Irfan

Ali Asadi received his BSc degree in mechanical engineering from the Tabriz University, in 1995 and his MSc degree in mechanical engineering from the Sharif University of Technology, in 1997. After that, he worked in impact and protection research center as a research assistant on protection systems against high velocity impact. He started his PhD thesis on “Stress wave propagation and experimental impact analysis on nanocomposite ceramic/metal lightweight targets” in the Department of Mechanical Engineering, at Amirkabir University of Technology (Tehran Polytechnic) in 2005 and finished it in 2011. His research interests include high velocity impact, nano ceramics, composite structures, stress wave propagation.

Ali Sadough Vanini is currently a full professor at Amirkabir University of Technology (Tehran Polytechnic), Mechanical Engineering Department. He received a doctoral degree in Metallurgy Engineering from Paris 6 (Pierre and Marie Curie) University France in 1985. Visiting Professor, Paris 6 University, France, June 1990–Sept 1990, Oct 1992–Sept 1993 and École Polytechnique de Montreal Canada Feb 2000–Feb 2001. Since 2000 he has also been the member of Centre of Excellence in Thermoelasticity and Director of the Materials Science and Biocompatibility Laboratory of Mech. Engin. Depart. Prof. Sadough Vanini is the author or coauthor of over 180 professional papers and books in the Materials and Mechanical Engineering fields.

Amin Jabbari received his BSc degree in mechanical engineering from Amirkabir University of Technology, in 2010. Getting first rank in national universities entrance exam, he started his MSc at the School of Mechanical Engineering, Amirkabir University of Technology. His research interests include fracture mechanics, mechanical behavior of nanocomposites, rheology, and semi-solid metal forming.

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Asadi, A., Vanini, A.S. & Jabbari, A. Investigation on the impact behavior of Al 2 O 3-SiC-MgO nanoceramic/metal laminated composite. J Mech Sci Technol 25, 2179–2184 (2011). https://doi.org/10.1007/s12206-011-0535-4

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  • DOI: https://doi.org/10.1007/s12206-011-0535-4

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