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Application of neutron imaging to detect and quantify fatigue cracking

Research output: Contribution to journalArticle (Academic Journal)

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Application of neutron imaging to detect and quantify fatigue cracking. / Reid, A; Marshall, M; Kabra, S.; Minniti, T; Kockelmann, Winfried; Connolley, Thomas; James, Andrew; Marrow, T. J.; Mostafavi, Mahmoud.

In: International Journal of Mechanical Sciences, Vol. 159, 01.08.2019, p. 182-194.

Research output: Contribution to journalArticle (Academic Journal)

Harvard

Reid, A, Marshall, M, Kabra, S, Minniti, T, Kockelmann, W, Connolley, T, James, A, Marrow, TJ & Mostafavi, M 2019, 'Application of neutron imaging to detect and quantify fatigue cracking', International Journal of Mechanical Sciences, vol. 159, pp. 182-194. https://doi.org/10.1016/j.ijmecsci.2019.05.037

APA

Reid, A., Marshall, M., Kabra, S., Minniti, T., Kockelmann, W., Connolley, T., James, A., Marrow, T. J., & Mostafavi, M. (2019). Application of neutron imaging to detect and quantify fatigue cracking. International Journal of Mechanical Sciences, 159, 182-194. https://doi.org/10.1016/j.ijmecsci.2019.05.037

Vancouver

Reid A, Marshall M, Kabra S, Minniti T, Kockelmann W, Connolley T et al. Application of neutron imaging to detect and quantify fatigue cracking. International Journal of Mechanical Sciences. 2019 Aug 1;159:182-194. https://doi.org/10.1016/j.ijmecsci.2019.05.037

Author

Reid, A ; Marshall, M ; Kabra, S. ; Minniti, T ; Kockelmann, Winfried ; Connolley, Thomas ; James, Andrew ; Marrow, T. J. ; Mostafavi, Mahmoud. / Application of neutron imaging to detect and quantify fatigue cracking. In: International Journal of Mechanical Sciences. 2019 ; Vol. 159. pp. 182-194.

Bibtex

@article{d390230b0b884999a7b65523ce81b68e,
title = "Application of neutron imaging to detect and quantify fatigue cracking",
abstract = "Non-destructive imaging techniques provide a unique opportunity to study crack initiation and propagation behaviour in structural materials. To evaluate the applicability of different volumetric imaging techniques, a round bar notched sample of duplex stainless steel was fatigue cracked and studied in situ and ex situ. Neutron and synchrotron X-ray tomography was used along with destructive methods and Bragg edge neutron imaging to evaluate the fatigue crack. Neutron attenuation tomography obtained a three-dimensional image in which the crack was readily identifiable. The neutron tomography, although lower in spatial resolution compared with the X-ray synchrotron tomography and requiring higher acquisition time, is sensitive to the phase chemistry, and has the potential to study engineering size components. Bragg edge neutron transmission imaging allows for the mapping of two-dimensional elastic strains and was used to identify the fatigue crack from the reduction in the strain in the region where the crack propagated. A finite element model of the cracked specimen was used to simulate the average through thickness strain that is measured by the Bragg edge neutron imaging technique. The strains measured in the ferritic phase correspond better with the simulation strains than the strain measured in the austenitic phase. It is concluded that this difference is due to strain partitioning, which is influenced by the strong texture present in the duplex steel.",
keywords = "Bragg edge transmission imaging, Duplex stainless steel, Energy-dispersive imaging, Neutron computed tomography, X-ray computed tomography",
author = "A Reid and M Marshall and S. Kabra and T Minniti and Winfried Kockelmann and Thomas Connolley and Andrew James and Marrow, {T. J.} and Mahmoud Mostafavi",
year = "2019",
month = aug,
day = "1",
doi = "10.1016/j.ijmecsci.2019.05.037",
language = "English",
volume = "159",
pages = "182--194",
journal = "International Journal of Mechanical Sciences",
issn = "0020-7403",
publisher = "Elsevier Limited",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Application of neutron imaging to detect and quantify fatigue cracking

AU - Reid, A

AU - Marshall, M

AU - Kabra, S.

AU - Minniti, T

AU - Kockelmann, Winfried

AU - Connolley, Thomas

AU - James, Andrew

AU - Marrow, T. J.

AU - Mostafavi, Mahmoud

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Non-destructive imaging techniques provide a unique opportunity to study crack initiation and propagation behaviour in structural materials. To evaluate the applicability of different volumetric imaging techniques, a round bar notched sample of duplex stainless steel was fatigue cracked and studied in situ and ex situ. Neutron and synchrotron X-ray tomography was used along with destructive methods and Bragg edge neutron imaging to evaluate the fatigue crack. Neutron attenuation tomography obtained a three-dimensional image in which the crack was readily identifiable. The neutron tomography, although lower in spatial resolution compared with the X-ray synchrotron tomography and requiring higher acquisition time, is sensitive to the phase chemistry, and has the potential to study engineering size components. Bragg edge neutron transmission imaging allows for the mapping of two-dimensional elastic strains and was used to identify the fatigue crack from the reduction in the strain in the region where the crack propagated. A finite element model of the cracked specimen was used to simulate the average through thickness strain that is measured by the Bragg edge neutron imaging technique. The strains measured in the ferritic phase correspond better with the simulation strains than the strain measured in the austenitic phase. It is concluded that this difference is due to strain partitioning, which is influenced by the strong texture present in the duplex steel.

AB - Non-destructive imaging techniques provide a unique opportunity to study crack initiation and propagation behaviour in structural materials. To evaluate the applicability of different volumetric imaging techniques, a round bar notched sample of duplex stainless steel was fatigue cracked and studied in situ and ex situ. Neutron and synchrotron X-ray tomography was used along with destructive methods and Bragg edge neutron imaging to evaluate the fatigue crack. Neutron attenuation tomography obtained a three-dimensional image in which the crack was readily identifiable. The neutron tomography, although lower in spatial resolution compared with the X-ray synchrotron tomography and requiring higher acquisition time, is sensitive to the phase chemistry, and has the potential to study engineering size components. Bragg edge neutron transmission imaging allows for the mapping of two-dimensional elastic strains and was used to identify the fatigue crack from the reduction in the strain in the region where the crack propagated. A finite element model of the cracked specimen was used to simulate the average through thickness strain that is measured by the Bragg edge neutron imaging technique. The strains measured in the ferritic phase correspond better with the simulation strains than the strain measured in the austenitic phase. It is concluded that this difference is due to strain partitioning, which is influenced by the strong texture present in the duplex steel.

KW - Bragg edge transmission imaging

KW - Duplex stainless steel

KW - Energy-dispersive imaging

KW - Neutron computed tomography

KW - X-ray computed tomography

UR - http://www.scopus.com/inward/record.url?scp=85066480082&partnerID=8YFLogxK

U2 - 10.1016/j.ijmecsci.2019.05.037

DO - 10.1016/j.ijmecsci.2019.05.037

M3 - Article (Academic Journal)

AN - SCOPUS:85066480082

VL - 159

SP - 182

EP - 194

JO - International Journal of Mechanical Sciences

JF - International Journal of Mechanical Sciences

SN - 0020-7403

ER -