Crack tip fields at crack initiation and growth under monotonic and large amplitude cyclic loading: Experimental and FE analyses

Jin Ha Hwang, Hune Tae Kim, Yun Jae Kim, Hyun Suk Nam, Jin Weon Kim

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, experiment and FE analyses are performed to investigate crack tip deformation and stress fields under monotonic and large amplitude cyclic loading. Fracture tests using C(T) specimens made of SA508 Gr.1a and TP316 are performed under monotonic and cyclic loading. Using the debonding analysis, it is found that the isotropic hardening model is relevant for monotonic loading, the kinematic hardening for SA508 Gr.1a under cyclic loading, and the Chaboche combined hardening for TP316 under cyclic loading. Using the relevant hardening model, crack tip deformation and stress fields at crack initiation and growth are presented.

Original languageEnglish
Article number105889
JournalInternational Journal of Fatigue
Volume141
DOIs
Publication statusPublished - 2020 Dec

Keywords

  • Crack growth
  • Crack tip deformation
  • Crack tip stress fields
  • Large-amplitude cyclic loading
  • Monotonic loading

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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