Characterization of fatigue crack propagation under complex biaxial loading

Rajesh Kumar Neerukatti, Siddhant Datta, Aditi Chattopadhyay, Nagaraja Iyyer, Nam Phan

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

Abstract

Metallic aerospace components are subject to a variety of uniaxial and multiaxial loading conditions and therefore, characterizing and predicting the fatigue crack growth is of paramount importance to the aerospace industry. The fatigue behavior of metallic materials has been researched over the years and well understood under uniaxial loading conditions. However, aerospace structures are often subject to multiaxial loading and there are a very few studies reported on this topic. In this paper, extensive in-plane biaxial tension-tension fatigue tests were performed on an Al7075-T651 cruciform specimen under varying load conditions such as in-phase, out-of-phase and miniTWIST loading. The fatigue life and crack growth rate were evaluated and fractography was performed to understand the microscale crack initiation and growth under these complex loading conditions.

Original languageEnglish (US)
Title of host publicationMechanics of Solids, Structures and Fluids; NDE, Diagnosis, and Prognosis
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume9
ISBN (Electronic)9780791850633
DOIs
StatePublished - 2016
EventASME 2016 International Mechanical Engineering Congress and Exposition, IMECE 2016 - Phoenix, United States
Duration: Nov 11 2016Nov 17 2016

Other

OtherASME 2016 International Mechanical Engineering Congress and Exposition, IMECE 2016
CountryUnited States
CityPhoenix
Period11/11/1611/17/16

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Neerukatti, R. K., Datta, S., Chattopadhyay, A., Iyyer, N., & Phan, N. (2016). Characterization of fatigue crack propagation under complex biaxial loading. In Mechanics of Solids, Structures and Fluids; NDE, Diagnosis, and Prognosis (Vol. 9). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE201666337