On the correlation between fatigue striation spacing and crack growth rate: A three-dimensional (3-D) X-ray synchrotron tomography study

Jason J. Williams, Kyle E. Yazzie, N. Connor Phillips, Nikhilesh Chawla, Xinghui Xiao, Francesco De Carlo, Nagaraja Iyyer, Maddan Kittur

Research output: Contribution to journalArticle

44 Scopus citations


In situ three-dimensional (3-D) X-ray synchrotron tomography of fatigue crack growth was conducted in a 7075-T6 aluminum alloy. Local measurements of da/dN were possible with the 3-D data sets obtained from tomography. A comparison with fatigue striation spacings obtained from scanning electron microscopy of the fracture surfaces yielded excellent correlation with da/dN obtained from tomography. The X-ray tomography technique can be used to obtain a highly accurate and representative measurements of crack growth locally in the microstructure of the material.

Original languageEnglish (US)
Pages (from-to)3845-3848
Number of pages4
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Issue number13
StatePublished - Dec 1 2011


ASJC Scopus subject areas

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

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