Thermal-Imaging Technologies for Detecting Damage during High-Cycle Fatigue

B. Yang, P. K. Liaw, G. Wang, W. H. Peter, R. A. Buchanan, Y. Yokoyama, J. Y. Huang, R. C. Kuo, J. G. Huang, D. E. Fielden, D. L. Klarstrom

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


A high-speed and high-sensitivity thermographic-infrared (IR) imaging system has been used for nondestructive evaluation of specimen-temperature evolutions during high-cycle fatigue experiments. The relationship among the temperature, stress-strain state, and fatigue behavior is discussed. Both thermodynamics and heat-transfer theories are applied to model and quantify the observed temperature variations during fatigue. The predicted and measured temperature evolutions and inelastic strains during fatigue were found to be in good agreement. During fatigue experiments, in-situ observations as well as qualitative and quantitative analyses of Lüders-band evolutions, crack propagation, plastic zones, and final fracture have been performed by thermography, which can open up wide applications of thermography in detecting the in-situ heat-related processes, including mechanical damages and phase transformations, of materials and structural components.

Original languageEnglish
Pages (from-to)15-23
Number of pages9
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume35 A
Issue number1
Publication statusPublished - 2004 Jan

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys


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