Description of fatigue damage in carbon black filled natural rubber

Abstract : The present paper describes macroscopic fatigue damage in carbon black-filled natural rubber (CB-NR) under uniaxial loading conditions. Uniaxial tension-compression, fully relaxing uniaxial tension and non-relaxing uniaxial tension loading conditions were applied until sample failure. Results, summarized in a Haigh-like diagram, show that only one type of fatigue damage is observed for uniaxial tension-compression and fully relaxing uniaxial tension loading conditions, and that several different types of fatigue damage take place in non-relaxing uniaxial tension loading conditions. The different damage types observed under non-relaxing uniaxial tension, loading conditions are closely related to the improvement of rubber fatigue life. Therefore, as fatigue life improvement is classically supposed to be due to strain-induced crystallization (SIC), a similar conclusion can be drawn for the occurrence of different types of fatigue damage.
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Fatigue and Fracture of Engineering Materials and Structures, Wiley-Blackwell, 2008, 31 (12), pp.1031-1038. 〈10.1111/j.1460-2695.2008.01293.x〉
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Jean-Benoit Le Cam, Bertrand Huneau, Erwan Verron. Description of fatigue damage in carbon black filled natural rubber. Fatigue and Fracture of Engineering Materials and Structures, Wiley-Blackwell, 2008, 31 (12), pp.1031-1038. 〈10.1111/j.1460-2695.2008.01293.x〉. 〈hal-01006723〉

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