INVESTIGATION INTO FATIGUE, DAMPING AND TENSILE PROPERTIES OF MULTI-WALLED CARBON NANO TUBE AL6061 METAL MATRIX COMPOSITES USING STIR CASTING TECHNIQUE
Keywords:
Multiwall Carbon Nanotube (MWCNT), Al6061, fatigue, Damping ratio, Natural frequency, Stir casting techniqueAbstract
Al6061 alloy as matrix and Multiwall Carbon Nanotube (MWNT) as reinforcement (0, 0.5, 1, 2,3,4 & 5 weight percentage) have been successfully fabricated by Stir Casting Technique. Fatigue is a mechanical property of the material, which occurs when a material is repeatedly subjected to an average stress which is lower than the materials yield stress. Hot rolling is used mainly to produce sheet metal or simple cross sections, such as rail tracks. Damping specimens were prepared according to ASTM E 756-05 standard and the specimens were subjected to free vibration test to investigate the damping ratio and natural frequency. It is observed from the free vibration test data improvement in damping ratio, natural frequency and modulus when reinforced with 2 weight percentage of MWNT. Increase in weight percentage of MWNT beyond 2 wt% leads to deterioration in damping ratio, natural frequency and Young’s modulus. This is due to agglomeration of reinforcement phase. Also the mechanical properties of the developed composites have been studied.
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References
Hui Lu, Xianping Wang, Tao Zhang, Zhijun Cheng and Qianfeng Fang (2009), “Design, Fabrication and Properties of High Damping Metal Matrix Composites—A Review” Materials, Vol.2, 958-977.
Wan Di-qing, Wang Jin-cheng, Wang Gai-fang, LIN Lin, FENG Zhi-gang and Yang Gen-cang (2009), “Effect of eutectic phase on damping and mechanical properties of as-cast Mg-Ni hypoeutectic alloys”, Trans. Nonferrous Met. Soc. China, Vol.19, 45-49.
Srikanth N, Zhong X L and Gupta M (2005), “Enhancing damping of pure magnesium using nano-size alumina particulates”, Materials Letters, Vol. 59, 3851– 3855.
Zhang J, Perez R J, Lavernia E J (1993), “Documentation of damping capacity of metallic, ceramic and metal-matrix composite materials”, Journal of materials science, Vol. 28, 2395-2404.
Umashankar K S, Gangadharan K V, Vijay Desai and Shivamurthy B (2010), “Fabrication and Investigation of Damping Properties of Nano Particulate Composites”, Journal of Minerals & Materials Characterization & Engineering, Vol. 9, 819-830.
Gabriel A. Lo´ pez , Mariano Barrado, Jose San Juan and Marı´a Luisa (2009), “cu-Al-Ni-SMA-Based High-Damping Composites”, JMEPEG, Vol.18,459–462
Chia-Yen Peng, Marie Levine, Lillian Shido and Robert Leland “Experimental observations on material damping at cryogenic temperatures”, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CAY USA, 91 109-8099.
Wan Di-qing, Wang Jin-cheng, Wang Gai-fang, LIN Lin,FENG Zhi-gang,Yang Gen-cang (2009), “Effect of eutectic phase on damping and mechanical properties of as-cast Mg-Ni hypoeutectic alloys”, Trans. Nonferrous Met. Soc. China, Vol. 19, 45-49.
Deng C F, Wang D Z, Zhang X X and Ma Y X (2007), “Damping characteristics of carbon nanotube reinforced aluminum composite”, Materials Letters, Vol. 61, 3229–3231.
Rodney S Ruoff and Donald C Lorents (1995), “Mechanical and Thermal Properties of Carbon nano tubes”, Carbon, Vol. 33, 925-930.
Overney G, Zhong W, Tom/mek D (1993), “Structural rigidity and low frequency vibrational modes of long carbon tubules”, Z. Phys. D, Vol. 27,93-96.
Kashyap K T and Patil R G (2008),“On Young’s modulus of multi-walled carbon nanotubes” Bull. Mater. Sci., Vol.31, No.2 pp.185–187.
Dong Qian, Gregory J Wagner and Wing Kam Liu Min-Feng Yu Rodney S Ruoff (2002), “Mechanics of carbon nanotubes”, Appl Mech Rev, Vol. 55, 495.
Verma B B, Atkinson J D and Kumar M (2001), “Study of fatigue behaviour of 7475 aluminium alloy”, Bull. Mater. Sci., Vol. 24, 231–236.
X Xia H J Mcqueen H Zhu (2002), “Fracture Behavior of Particle Reinforced Metal Matrix Composites”, Applied Composite Materials, Vol. 9, 17–31.
