• Elastomers and Composites
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• v.36 no.3
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• pp.153-161
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• 2001

The rubber pads era tank which undergo dynamic deformations with the sufficient amplitudes and frequencies lead to a considerable internal temperature rise due to the heat generation. The heat generation which is dependent on the viscoelastic characteristics or a rubber is due to the conversion of partial mechanical energy into thermal energy identical to the area oi hysteresis loop. Heat generation without adequate heat dissipation leads to heat build-up and the excessive temperature rite exerts a bad influence upon the performance and the life of rubber products. In this paper, temperature distributions of the rubber pads of a tank track subjected to dynamic loads are obtained under the assumption of the steady state. Heat generation rates used in this finite element analysis are acquired through experiments and the computed temperature fields are displayed in isothermal contour regions.

• 전자공학회논문지 IE
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• v.43 no.3
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• pp.1-5
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• 2006

[ $CaZrO_3$ ] humidity sensors were prepared using the solid-state synthetic method and their humidity sensitive characteristics have been investigated. It was found that the impedance of the humidity sensors decreased with increasing relative humidity and the humidity sensitivity depended on the applied frequencies. The sensitivity of sensor is stable with heat treatment and a negligible hysteresis under cyclic humidity changes is shown, and the activation energy for electrical conduction is reduced with water adsorption.