Specimen thickness effects on front edge shape of fatigue crack in Al7075-T6 alloy

Kenichi Masuda*, Sotomi Ishihara, Arthur J. McEvily, Masaki Okane

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this study, crack front edge shape due to the difference in the specimen thickness was investigated using aluminum alloy 7075-T6. The curvature radius of the fatigue crack front edge decreased as the specimen thickness decreased. According to the study by Camas et al., the plastic zone size at the specimen surface is larger than that at the center of the specimen thickness. As the curvature radius of the crack front edge becomes smaller, the difference between the plastic zone size at the specimen surface and that at the center of the specimen thickness becomes large. As a result, the specimen surface effect appears more strongly in thin specimen. This Camas’s result is in agreement with the characteristics obtained in this study that PIFCC appears remarkably when the specimen is thin.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Fracture Fatigue and Wear, FFW 2018
EditorsMagd Abdel Wahab
PublisherPleiades journals
Pages336-344
Number of pages9
ISBN (Print)9789811304101
DOIs
StatePublished - 2019
Event7th International Conference on Fracture Fatigue and Wear, FFW 2018 - Ghent, Belgium
Duration: 2018/07/092018/07/10

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference7th International Conference on Fracture Fatigue and Wear, FFW 2018
Country/TerritoryBelgium
CityGhent
Period2018/07/092018/07/10

Keywords

  • Crack closure
  • Crack front shape
  • Crack tip plastic zone
  • Thickness effect

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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