Infrared thermoelastic analysis methods for mixed-mode SIFs in composites

R. El-Hajjar, B. S. Wei, S. Johnson, R. Haj-Ali

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

Abstract

Two quantitative thermoelastic strain analysis (TSA) experimental methods are developed for surface strain measurement in notched orthotropic composites. The Lekhnitskii's anisotropic solutions are used together with the TSA methods to determine the spatial strains and mixed-mode stress intensity factors. The proposed TSA methods are verified with FEA results and can be extended for damage monitoring. The TSA or Infrared Thermography methods are used to correlate the precise measurements of surface temperatures to the surface strains in solids undergoing repeated elastic deformations. The surface temperature response under these repeated deformations is a function of the thermo-mechanical characteristics of the surface layer.

Original languageEnglish
Title of host publicationAmerican Society for Composites - 22nd Technical Conference of the American Society for Composites 2007 - Composites
Subtitle of host publicationEnabling a New Era in Civil Aviation
Pages1539-1543
Number of pages5
StatePublished - 2007
Externally publishedYes
Event22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation - Seattle, WA, United States
Duration: 17 Sep 200719 Sep 2007

Publication series

NameAmerican Society for Composites - 22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation
Volume3

Conference

Conference22nd Technical Conference of the American Society for Composites 2007 - Composites: Enabling a New Era in Civil Aviation
Country/TerritoryUnited States
CitySeattle, WA
Period17/09/0719/09/07

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