Modeling of the thermomechanical behavior of rubbers during fatigue tests from infrared measurements
Source abstract
Abstract
Abstract This paper presents the establishment of an equation fitting the evolution of the self-heating of a polychloroprene rubber (CR) and a natural rubber (NR) during uniaxial fatigue tests. For the CR, dumbbell shaped samples underwent a wide range of loadings was investigated in order to cover low and high cycle fatigue behavior for several load ratios taken between −0.3 and 0.5. The study consists in firstly measuring the evolution of the self-heating during a fatigue test. Then, after computing the derivative, the resulting curve is fit with an equation composed of three components: two of the form of a negative exponential and a constant. It is then integrated to obtain an equation that would fit the evolution of the self-heating for all the loadings investigated. It is observed that the parameters are correlated with the intensity of the stress and the load ratio applied during the test. The same observations were made for the NR on slim samples. Consequently, it is proposed that one of the parameter is linked to the viscosity, the parameter linked to the first negative exponential is related with the viscosity, the parameter linked to the second negative exponential is related to the damage induced by the low cycle fatigue loading and the parameter integrated from the constant is related to the influence of the presence of a sizable crack on the temperature field.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Elasticity and Material Modeling · Mechanical Behavior of Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
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