Thermal Expansion Coefficient for Lead- Graphite and Lead-Iron Metal Matrix Composites

Jagannath, K and Sharma , S S and Bhat, Chandrashekhar and Prabhu, P R (2012) Thermal Expansion Coefficient for Lead- Graphite and Lead-Iron Metal Matrix Composites. In: International Conference on Mechanical, Production and Materials Engineering (ICMPME'2012), June 16-17, Bangkok.

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One of the significant features of a composite material is tailorability of its material properties. Coefficient of thermal expansion (CTE) of a composite material is known to play a key role in its application area. It has been realized that a state of micro stress often exists between the phase of the matrix and reinforcement. Difference in thermal expansion of the individual phases produces stress which indirectly affects the strength properties and modes of failure. In the present study, coefficient of thermal expansion is measured using metroscope, with a least count of 0.2 microns. Nichrome wire embedded specimens are used for the experiment. The main findings from the experiment is that the coefficient of thermal expansion for both lead-graphite and lead-iron composites increase with the increase in temperature. The rate of coefficient of thermal expansion decreases with increase in weight percentage of graphite or iron.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Metal matrix composite, Coefficient of thermal expansion, Residual stress, Metroscope.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 13 Mar 2013 09:34
Last Modified: 24 Apr 2013 05:53

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