An investigation of residual stress gradient effects in FIB-DIC micro-ring-core analysis

Enrico Salvati, Alexander J.G. Lunt, Tan Sui, Alexander M. Korsunsky

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

4 Citations (Scopus)

Abstract

In many cases residually stresses surface layers that are obtained by surface treatment or coating deposition contain significant stress gradients. These gradients affect the performance of component surfaces under the conditions of contact loading in service, such as impact, scratch and abrasion, wear, erosion, fretting fatigue, etc. The determination of residual stress in the close vicinity of sample surfaces, at the depths ranging from sub-micron to a few microns, is a challenging task that cannot be accomplished routinely using existing techniques. A challenging aspect of the problem of stress evaluation concerns the nature of weighting of the contributions from different depths below the surface within the gauge volume. In the present study we focus our attention on this issue, specifically, on the effects of sub-surface stress gradients on the apparent stress value obtained by FIB-DIC micro-ring-core analysis. The implications of this investigation are discussed in the concluding section.

Original languageEnglish
Title of host publicationIMECS 2015 - International MultiConference of Engineers and Computer Scientists 2015
EditorsDavid Dagan Feng, S. I. Ao, Craig Douglas, S. I. Ao, Craig Douglas, Jeong-A Lee, S. I. Ao, Oscar Castillo
PublisherNewswood Limited
Pages771-774
Number of pages4
ISBN (Electronic)9789881925398
Publication statusPublished - 2015
Externally publishedYes
EventInternational MultiConference of Engineers and Computer Scientists 2015, IMECS 2015 - Tsimshatsui, Kowloon, Hong Kong
Duration: 18 Mar 201520 Mar 2015

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2
ISSN (Print)2078-0958

Conference

ConferenceInternational MultiConference of Engineers and Computer Scientists 2015, IMECS 2015
Country/TerritoryHong Kong
CityTsimshatsui, Kowloon
Period18/03/1520/03/15

Keywords

  • Eigenstrain
  • FEM
  • FIB
  • Residual stress

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