Estimation of in-use Guaranteed Rubber Lifetime test methods

Abstract

With the purpose to estimate the existing methodologies of in-use guaranteed rubber life-time test, the processing of the accelerating rubber ageing results according to State Standard GOST, ISO and Research and Production Enterprise "Progress" methodology is carried out. It is shown that the experimental results analysis provides us with the similar picture, but analytical prognostic method is more advantageous because of its flexibility. Improving of the methods of processing experimental data of rubber accelerated ageing is in the scope of interest of modern mathematical modeling, which lets using more complex functions, reflecting the properties of rubber behaviour in the whole analyzed temperature and time interval without any rejection of experimental data. Such modeling lets more precisely predict rubber behaviour in different operating conditions and carry out computations in conditions of complex temperature-and-time model of rubber products storage and exploitation.

Thermal Oxidative Aging and Service Life Prediction of Commercial Ethylene–Propylene–Diene Monomer Spacer Damping Composites for High–Voltage Transmission Lines

“…The compression set of EPDM composites exhibited a rapid increase during the early stage of aging, followed by a slowdown in the rate of compression set in the later stage, ultimately stabilizing. According to previous research, when the compression set retention reached 50%, the rubber composites were considered to have failed [49]. Figure 8b shows a linear relationship between lnt and T −1 in the life prediction equation, with a As depicted in Figure 8a, the compression set is plotted against time at five temperatures.…”

A generalized equivalent temperature model in a time-varying environment

“…Huang predicted the life of tantalum capacitors under working temperature which was specified as 35°C [4]. Vakulov studied the properties changing in storage condition by accelerating ageing test on the example of rubbers К-14-1 and К-14-2 [18].…”