Useful lifetime prediction of rubber component

Thermal degradation of chlorosulfonated polyethylene rubber and ethylene propylene diene terpolymer

“…The mechanical properties of rubber, however, are sensitive to environmental conditions. A degrading environment, such as one characterized by high temperature, high humidity, strong light, or a mechanical load, will degrade the mechanical properties of rubber [1][2][3][4][5][6][7][8]. South had evaluated the thermal degradation of ultimate stress and strain, Young's modulus, and crack growth behavior for natural rubber (NR) according to the percentage of polysulfidic crosslinks [1].…”

Time to failure prediction in rubber components subjected to thermal ageing: A combined approach based upon the intrinsic defect concept and the fracture mechanics

“…This form is generally used when T 0 > T g + 100, T g being the glass transition temperature of the polymer. This model has been widely and successfully used to investigate the thermal ageing of polymers (Ha-Anh and Vu-Khanh, 2005;Gillen et al, 2006;Woo and Park, 2011). When the previous restriction on the reference temperature is no longer valid, one may use the phenomenological approach developed by Williams-Landel-Ferry (Williams et al, 1955), known as the WLF approach.…”

“…Since ageing is a long time process, accelerated thermal ageing tests are often used to shorten their exposure duration and predict their operating life time. In fact, from these tests, results for lower temperatures are generally obtained using the time-temperature equivalence principle (Ferry, 1970;Treloar, 1971;Ha-Anh and Vu-Khanh, 2005;Gillen et al, 2006;Woo and Park, 2011).…”

Study on the Aging Behavior of Natural Rubber/Butadiene Rubber (NR/BR) Blends Using a Parallel Spring Model

“…By deriving a SED function with a specific aging temperature or aging time, we can predict its behavior under all conditions with the equivalent aging conversion using the Arrhenius Equation (6) [36][37][38][39], where R is a constant (8.314), t is a time, and T is the absolute temperature.…”