In situ high resolution synchrotron x-ray tomography of fatigue crack closure micromechanisms

K. H. Khor; J. Y. Buffiére; W. Ludwig; H. Toda; H. S. Ubhi; P. J. Gregson; I. Sinclair

doi:10.1088/0953-8984/16/33/012

In situ high resolution synchrotron x-ray tomography of fatigue crack closure micromechanisms

K. H. Khor, J. Y. Buffiére, W. Ludwig, H. Toda, H. S. Ubhi, P. J. Gregson, I. Sinclair

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

The steady state plane strain fatigue crack growth in a 2024-type Al alloy was investigated using in situ high resolution synchrotron radiation x-ray microtomography. A novel microstructural crack displacement gauging method was used to quantify the mixed mode character of crack opening displacement and the closure effect. A liquid gallium grain boundary wetting technique was used in conjunction with the microtomography to visualize the correlation between the fatigue crack behaviour and the three-dimensional (3D) structure of the grains. Electron backscattering diffraction assessment of the grain orientation on the samples was found to provide a uniquely complete 3D description of crack-microstructure interactions.

Original language	English
Pages (from-to)	S3511-S3515
Journal	Journal of Physics Condensed Matter
Volume	16
Issue number	33
DOIs	https://doi.org/10.1088/0953-8984/16/33/012
Publication status	Published - Aug 25 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics

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10.1088/0953-8984/16/33/012

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title = "In situ high resolution synchrotron x-ray tomography of fatigue crack closure micromechanisms",

abstract = "The steady state plane strain fatigue crack growth in a 2024-type Al alloy was investigated using in situ high resolution synchrotron radiation x-ray microtomography. A novel microstructural crack displacement gauging method was used to quantify the mixed mode character of crack opening displacement and the closure effect. A liquid gallium grain boundary wetting technique was used in conjunction with the microtomography to visualize the correlation between the fatigue crack behaviour and the three-dimensional (3D) structure of the grains. Electron backscattering diffraction assessment of the grain orientation on the samples was found to provide a uniquely complete 3D description of crack-microstructure interactions.",

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AU - Khor, K. H.

AU - Buffiére, J. Y.

AU - Ludwig, W.

AU - Toda, H.

AU - Ubhi, H. S.

AU - Gregson, P. J.

AU - Sinclair, I.

PY - 2004/8/25

Y1 - 2004/8/25

N2 - The steady state plane strain fatigue crack growth in a 2024-type Al alloy was investigated using in situ high resolution synchrotron radiation x-ray microtomography. A novel microstructural crack displacement gauging method was used to quantify the mixed mode character of crack opening displacement and the closure effect. A liquid gallium grain boundary wetting technique was used in conjunction with the microtomography to visualize the correlation between the fatigue crack behaviour and the three-dimensional (3D) structure of the grains. Electron backscattering diffraction assessment of the grain orientation on the samples was found to provide a uniquely complete 3D description of crack-microstructure interactions.

AB - The steady state plane strain fatigue crack growth in a 2024-type Al alloy was investigated using in situ high resolution synchrotron radiation x-ray microtomography. A novel microstructural crack displacement gauging method was used to quantify the mixed mode character of crack opening displacement and the closure effect. A liquid gallium grain boundary wetting technique was used in conjunction with the microtomography to visualize the correlation between the fatigue crack behaviour and the three-dimensional (3D) structure of the grains. Electron backscattering diffraction assessment of the grain orientation on the samples was found to provide a uniquely complete 3D description of crack-microstructure interactions.

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In situ high resolution synchrotron x-ray tomography of fatigue crack closure micromechanisms

Abstract

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