Effects of overloads and underloads on biaxial fatigue crack propagation in Al 7075-T651 alloy

Siddhant Datta, Aditi Chattopadhyay, Nagaraja Iyyer, Nam Phan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The fatigue crack growth behavior of Al 7075-T651 was investigated under in-plane biaxial loading conditions with overload and underload cycles introduced at different crack lengths. Quantitative fractography was performed on the fatigued specimens to correlate the microscale fracture features with the damage modes associated with the applied load spectrum. Overloads resulted in significant crack retardation and, in the case of higher overload amplitudes at longer crack lengths, even caused total crack arrest. The underloads led to increased crack growth; however this increase was not significant.

Original languageEnglish (US)
Title of host publicationICF 2017 - 14th International Conference on Fracture
EditorsEmmanuel E. Gdoutos
PublisherInternational Conference on Fracture
Pages718-719
Number of pages2
ISBN (Electronic)9780000000002
StatePublished - Jan 1 2017
Event14th International Conference on Fracture, ICF 2017 - Rhodes, Greece
Duration: Jun 18 2017Jun 20 2017

Publication series

NameICF 2017 - 14th International Conference on Fracture
Volume1

Conference

Conference14th International Conference on Fracture, ICF 2017
CountryGreece
CityRhodes
Period6/18/176/20/17

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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  • Cite this

    Datta, S., Chattopadhyay, A., Iyyer, N., & Phan, N. (2017). Effects of overloads and underloads on biaxial fatigue crack propagation in Al 7075-T651 alloy. In E. E. Gdoutos (Ed.), ICF 2017 - 14th International Conference on Fracture (pp. 718-719). (ICF 2017 - 14th International Conference on Fracture; Vol. 1). International Conference on Fracture.