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Falls Church, VA, United States

Williams J.J.,Arizona State University | Yazzie K.E.,Arizona State University | Connor Phillips N.,Arizona State University | Chawla N.,Arizona State University | And 4 more authors.
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science | Year: 2011

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. © 2011 The Minerals, Metals & Materials Society and ASM International. Source

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