Journal
INTERNATIONAL JOURNAL OF FATIGUE
Volume 138, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2020.105723
Keywords
Structural composites; Fatigue; Failure criterion; Modelling
Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo -FAPESP [2006/02121-6, 2011/11311-1, 2012/13431-7, 2017/10606-4]
- National Council for Scientific and Technological Development -CNPq [153335/2018-1]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior, Brazil [001]
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In this study, a model of fatigue life estimative based on dynamic mechanical analysis and fatigue tests is validated. Storage modulus is the viscoelastic parameter which better correlate with fatigue resistance. Accordingly, it was proposed a fatigue life estimative based on the extension of the storage modulus in function of time and its relation with the parameters of the equation which defines strength versus number of cycles (S-N) curve. A new correlation between viscoelastic properties and fatigue behavior was successfully applied allows creating a new S-N curve for the material without new mechanical tests requirement.
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