A fatigue life estimative method based on dynamic mechanical and fatigue analyses

Author(s)

Monticeli, Francisco Maciel ^[1]

Affiliation

^[1] Ornaghi Jr, Jr., Heitor Luiz, Sao Paulo State Univ, UNESP, Sch Engn, Dept Mat & Technol, Fatigue & Aeronaut Mat Res Grp, Guaratingueta - Brazil

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF FATIGUE; v. 138, SEP 2020.
• Web of Science Citations: 0

Abstract

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. (AU)

• FAPESP's process: 06/02121-6 - Composite processing by RTM
• Grantee: Maria Odila Hilário Cioffi
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 17/10606-4 - Fatigue in hybrid composites processed via RTM: hybrid interface influence in delamination modes I and II
• Grantee: Francisco Maciel Monticeli
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 12/13431-7 - Epoxy resin toughening for aplication in structural composites
• Grantee: Thatiane Brocks
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 11/11311-1 - Structural composites fatigue life prediction based on dynamic mechanical analysis
• Grantee: Thatiane Brocks
• Support Opportunities: Scholarships in Brazil - Doctorate