Abstract: Flexible polydimethylsiloxane-titania (PDMS-TiO2) nanocomposites of different composition are prepared using two mixing methods/techniques. In the present study, PDMS elastomer is used as base matrix and titania (TiO2) as ceramic filler. The effect of titania on thermal, electrical, and mechanical properties is investigated for different composites at various concentration of titania. A variety of electrical and mechanical tests are performed on the resultant composites and found that dielectric constant of composites increased significantly with the increase in titania concentration whereas volume resistivity of composites decreased. The effect of titania concentration is also studied with respect to tensile strength, % elongation at break (% E. B.), and tensile modulus. The effect of pressure on dielectric constant and resistivity of composites has also been studied in order to determine the piezoelectric behavior of the composites. Filler dispersion/distribution in PDMS matrix is st

• Publication Date: 17-Nov-2014
• DOI: 10.15224/978-1-63248-054-5-49
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Abstract: Gyroscope devices are primary unit in navigation and control systems that have wide application in aviation, space, ships and other industries. The main property of the gyroscope device is maintaining its axis. This gyroscope peculiarity is represented in term gyroscope effects, which mathematical models formulated on the law of kinetic energy conservation and the rate change in the angular momentum of a spinning rotor. However, the nature of gyroscope effects is more complex and known mathematical models do not match the actual forces and motions in the gyroscope devices. Recent investigations in area of gyroscope theory demonstrate that in the gyroscope are acting four dynamical components simultaneously and interdependently, namely: the centrifugal, inertial and Coriolis forces and the change angular momentum in the spinning rotor. The applied torque to the spinning rotor generates the resistance torque based on centrifugal and Coriolis forces. The torque generated by the inertial f

• Publication Date: 17-Nov-2014
• DOI: 10.15224/978-1-63248-054-5-50
• Views: 0
• Downloads: 0