The significance of plastic zone growth under cyclic loading and crack opening/closing model in fatigue crack propagation

Masahiro Toyosada, Koji Gotoh

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

6 Citations (Scopus)

Abstract

Fatigue cracks remain closed at lower loading level during a part of load cycle even though a tension-to-tension loading is applied. The crack closure plays a role to obstruct the generation and growth of compressive plastic zone during unloading. Cyclic plastic work, which corresponds to an irreversible energy consumed in a cracked body is generated ahead of a crack, is required as a fatigue crack driving force. The amout of cyclic plasticity is reduced by a crack closure. The crack opening/closing model based on the Dugdale model under arbitrary stress distributions for a through thickness straight crack is proposed and the fatigue crack growth under various loadings is investigated.

Original languageEnglish
Title of host publicationMaterials Structure and Micromechanics of Fracture IV, MSMF-4 - Proceedings of the Fourth International Conference on Materials Structure and Micromechanics of Fracture
Pages95-102
Number of pages8
Publication statusPublished - Dec 1 2005
Event4th International Conference on Materials Structure and Micromechanics of Fracture, MSMF-4 - Brno, Czech Republic
Duration: Jun 23 2004Jun 25 2004

Publication series

NameMaterials Science Forum
Volume482
ISSN (Print)0255-5476

Other

Other4th International Conference on Materials Structure and Micromechanics of Fracture, MSMF-4
CountryCzech Republic
CityBrno
Period6/23/046/25/04

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Toyosada, M., & Gotoh, K. (2005). The significance of plastic zone growth under cyclic loading and crack opening/closing model in fatigue crack propagation. In Materials Structure and Micromechanics of Fracture IV, MSMF-4 - Proceedings of the Fourth International Conference on Materials Structure and Micromechanics of Fracture (pp. 95-102). (Materials Science Forum; Vol. 482).