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Title: Investigations on tribological behaviour of aluminium alloy metal matrix and hybrid composites
Researcher: Dharmalingam S
Guide(s): Subramanian R
Keywords: Tribological behavior
Aluminium alloy
Metal matrix
Hubrid composite
Upload Date: 15-Jul-2013
University: Anna University
Completed Date: 01/04/2011
Abstract: Wear is damage to a solid surface usually involving progressive loss of materials, owing to relative motion between the surface and contacting substances. Wear behaviour of various alloys and metal matrix composites has been extensively studied; there are still wear problems present in industrial applications. Aluminium is the most popular matrix for the metal matrix composites (MMCs). They are usually reinforced by alumina (Al2O3), silicon carbide (SiC), boron carbide (B4C) and titanium oxide (TiO2). The development of aluminium MMCs dispersed with solid lubricants is primarily directed towards overcoming the major drawbacks of aluminium as a tribological material. The incorporation of soft reinforcement as Molybdenum disulphide (MoS2) solid lubricant will give the desired results even at higher temperatures. Among the several methods available to optimize the parameters, the Taguchi method is a traditional approach for experimental design that seeks to obtain a best combination set of wear parameters with the lowest cost solution. However, Taguchi method cannot be used to optimize a multi-response problem. Hence Grey Relational Analysis (GRA) has been combined with Taguchi method to optimize the multi response wear behaviour through the various parameters with different levels. The findings of the dry sliding wear experiments and abrasive wear experiments indicate that the wear rate, specific wear rate and coefficient of friction of the MMCs and Hybrid composites is greatly influenced by the load, sliding speed, content of alumina and molybdenum disulphide. Analysis of Variance (ANOVA) as performed on the wear rate, specific wears rate and coefficient of friction. Finally, optimum factor settings for minimum wear rate, specific wear rate and coefficient of friction are determined using Grey Relational Analysis (GRA). The worn surface was analyzed using Scanning Electron Microscopy (SEM), to study the influence of wear mechanisms in particular and on the overall behaviour in general.
Pagination: xxii, 164p.
Appears in Departments:Faculty of Mechanical Engineering

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02_certificates.pdf957.76 kBAdobe PDFView/Open
03_abstract.pdf21.57 kBAdobe PDFView/Open
04_acknowledgement.pdf16.39 kBAdobe PDFView/Open
05_contents.pdf53.73 kBAdobe PDFView/Open
06_chapter 1.pdf83.1 kBAdobe PDFView/Open
07_chapter 2.pdf297.22 kBAdobe PDFView/Open
08_chapter 3.pdf582.27 kBAdobe PDFView/Open
09_chapter 4.pdf67.92 kBAdobe PDFView/Open
10_chapter 5.pdf4.43 MBAdobe PDFView/Open
11_chapter 6.pdf37.67 kBAdobe PDFView/Open
12_references.pdf80.22 kBAdobe PDFView/Open
13_publications.pdf17.95 kBAdobe PDFView/Open
14_vitae.pdf14.1 kBAdobe PDFView/Open

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