Rubber material characteristics and useful lifetime evaluation are critical in design methods to ensure rubber component safety and reliability. The features of rubber components for an elevator cabin were investigated experimentally, as well as their useful lifetime prediction. There were material tests and accelerated heat-aging tests carried out. Curve fitting of uniaxial tension, pure shear, and equi-biaxial tension test data yielded the rubber material coefficient. The changes in mechanical properties were studied under accelerated ageing circumstances to assess and forecast the useful lifetime of natural rubber components. The rubber was aged for 1 to 60 days at temperatures ranging from 70°C to 100°C. Using an Arrhenius methodology, this work proposes a general approach for linking accelerated ageing results with ageing under service settings. Using the rubber material and component test, several helpful lifetime prediction equations for the rubber component were presented. The estimated useful lifetime of the rubber component in an elevator cabin matched the experimentally determined values quite well.
Author (S) Details
C. S. Woo
Department of Nano Mechanics, Korea Institute of Machinery & Materials, Daejeon, Korea.
H. S. Park
Department of Nano Mechanics, Korea Institute of Machinery & Materials, Daejeon, Korea.
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