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Title: Modeling and analysis of creep in composite cylinders
Researcher: Singh, Tejeet
Guide(s): Gupta, Vinay Kumar
Upload Date: 16-May-2011
University: Punjabi University
Completed Date: May, 2010
Abstract: Composites are the materials, which are made by combining two or more materials to get properties that are not attainable in any of its constituents alone. Recently, a new class of composite materials known as functionally graded materials (FGMs) have led to the development of superior heat resistant materials and is the choice for many engineering applications such as automobile, aerospace, marine and oil industries. In most of these applications cylinder has to operate under severe mechanical and thermal loads causing significant creep, and thus reducing its service life. The present study investigates the steady state creep in a closed end thick-walled composite cylinders made up of aluminum/aluminum alloy matrix (Al/6061Al) and reinforced with silicon carbide particles/whiskers (SiCp,w). The distribution of SiCp,w is assumed to be either uniform or decreasing linearly from the inner to the outer radius of the cylinder. The creep behavior of the cylinder has been described by threshold stress based creep law with a stress exponent of 5. Regression analysis is used to obtain the creep parameters required in the study. The mathematical models have been developed to describe steady state creep in the composite cylinder. The basic equilibrium equation of the cylinder and other constitutive equations have been solved to obtain creep stresses and strain rates in the cylinder. The effect of varying particle size, particle content and temperature on the stresses and strain rates in the composite cylinder has been analyzed. The steady state creep in the FGM cylinder operating under thermal and particle gradients has also been investigated. In many whisker reinforced composites, anisotropy may result due to material flow during processes. Therefore, the effect of anisotropy has also been investigated on creep behavior of FGM cylinder made of 6061Al- SiCw.
Pagination: xiii, 202p.
Appears in Departments:University College of Engineering

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02_certificate.pdf65.14 kBAdobe PDFView/Open
03_declaration.pdf17.34 kBAdobe PDFView/Open
04_acknowledgement.pdf15.39 kBAdobe PDFView/Open
05_table of content.pdf54.87 kBAdobe PDFView/Open
06_list of reserach paper.pdf69 kBAdobe PDFView/Open
07_list of figure.pdf96.49 kBAdobe PDFView/Open
08_list of table.pdf17.27 kBAdobe PDFView/Open
09_abstract.pdf9.23 kBAdobe PDFView/Open
10_chapter 1.pdf199.48 kBAdobe PDFView/Open
11_chapter 2.pdf447.35 kBAdobe PDFView/Open
12_chapter 3.pdf540.79 kBAdobe PDFView/Open
13_chapter 4.pdf311.61 kBAdobe PDFView/Open
14_chapter 5.pdf429.87 kBAdobe PDFView/Open
15_chapter 6.pdf267.16 kBAdobe PDFView/Open
16_chapter 7.pdf63.78 kBAdobe PDFView/Open
17_bibliography.pdf205.73 kBAdobe PDFView/Open

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