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- Title
On the Correlation Between Fatigue Striation Spacing and Crack Growth Rate: A Three-Dimensional (3-D) X-ray Synchrotron Tomography Study.
- Authors
Williams, Jason; Yazzie, Kyle; Connor Phillips, N.; Chawla, Nikhilesh; Xiao, Xinghui; Carlo, Francesco; Iyyer, Nagaraja; Kittur, Maddan
- Abstract
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.
- Subjects
MATERIAL fatigue; X-rays; TOMOGRAPHY; ALLOYS; SCANNING electron microscopy
- Publication
Metallurgical & Materials Transactions. Part A, 2011, Vol 42, Issue 13, p3845
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-011-0963-x