Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
An autonomous surface discontinuity detection and quantification methodby digital image correlation and phase congruency
University of Sheffield, Sheffield, UK.
University of Oxford, Oxford, UK.
LaVision, UK.
RISE - Research Institutes of Sweden, Safety and Transport. (Mechanics Research)ORCID iD: 0000-0002-3481-1368
Show others and affiliations
2017 (English)In: Optics and lasers in engineering, ISSN 0143-8166, E-ISSN 1873-0302, Vol. 96, 94-106 p.Article in journal (Refereed) Published
Abstract [en]

Digital image correlation has been routinelyused to measure full-field displacements in many areas of solid mechanics,including fracture mechanics. Accurate segmentation of the crack path is neededto study its interaction with the microstructure and stress fields, and studiesof crack behaviour, such as the effect of closure or residual stress infatigue, require data on its opening displacement. Such information can beobtained from any digital image correlation analysis of cracked components, butit collection by manual methods is quite onerous, particularly for massiveamounts of data. We introduce the novel application of Phase Congruency to detectand quantify cracks and their opening. Unlike other crack detection techniques,Phase Congruency does not rely on adjustable threshold values that require userinteraction, and so allows large datasets to be treated autonomously. Theaccuracy of the Phase Congruency based algorithm in detecting cracks isevaluated and compared with conventional methods such as Heaviside function fitting.As Phase Congruency is a displacementbased method, it does not suffer from thenoise intensification to which gradient-based methods (e.g. strain thresholding)are susceptible. Its application is demonstrated to experimental data forcracks in quasi-brittle (Granitic rock) and ductile (Aluminium alloy)materials.

Place, publisher, year, edition, pages
2017. Vol. 96, 94-106 p.
Keyword [en]
Digital image correlation, Fracture mechanics, Crack, Phase congruency, Segmentation
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:ri:diva-29946DOI: 10.1016/j.optlaseng.2017.04.010OAI: oai:DiVA.org:ri-29946DiVA: diva2:1113929
Available from: 2017-06-22 Created: 2017-06-22 Last updated: 2017-06-26Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Flansbjer, Mathias
By organisation
Safety and Transport
In the same journal
Optics and lasers in engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 6 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.26.0