Title: Impact performance of Al/SiC functionally graded circular plates

Authors: M. Kemal Apalak; Recep Gunes; Murat Aydin; J.N. Reddy

Addresses: Department of Mechanical Engineering, Erciyes University, Kayseri 38039, Turkey. ' Department of Mechanical Engineering, Erciyes University, Kayseri 38039, Turkey. ' School of Civil Aviation, Erciyes University, Kayseri 38039, Turkey. ' Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123, USA

Abstract: This experimental study addresses the effect of ceramic reinforcement on the impact performance of functionally graded (FG) circular plates. The FG circular plates were produced from two different ceramic (SiC or Al2O3) and metal (Al) combinations using powder stacking-hot pressing technique. The Al/SiC FG circular plates exhibited better impact resistance than Al/Al2O3 FG circular plates. The effect of ceramic particle size was also investigated on the impact performance of specimens with different composition variations. A ceramic particle size of 50 μm improved the impact performance. In addition, the material composition and impactor velocity also affected the impact performance. Thus, the contact force increases as the composition changes from metal-rich to ceramic-rich. The peak contact force increases with increasing the velocity of impactor.

Keywords: functionally graded materials; impact performance; low velocity impact; circular plates; aluminium; silicon carbide; ceramic reinforcement; powder stacking; hot pressing; ceramic particles.

DOI: 10.1504/IJMPT.2011.044914

International Journal of Materials and Product Technology, 2011 Vol.42 No.1/2, pp.56 - 65

Published online: 07 Mar 2015 *

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