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Published in: Metallurgical and Materials Transactions A 13/2011

01-12-2011 | Communication

On the Correlation Between Fatigue Striation Spacing and Crack Growth Rate: A Three-Dimensional (3-D) X-ray Synchrotron Tomography Study

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

Published in: Metallurgical and Materials Transactions A | Issue 13/2011

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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.

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Metadata
Title
On the Correlation Between Fatigue Striation Spacing and Crack Growth Rate: A Three-Dimensional (3-D) X-ray Synchrotron Tomography Study
Authors
Jason J. Williams
Kyle E. Yazzie
N. Connor Phillips
Nikhilesh Chawla
Xinghui Xiao
Francesco De Carlo
Nagaraja Iyyer
Maddan Kittur
Publication date
01-12-2011
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 13/2011
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-011-0963-x

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