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Estimation of Realistic Microtexture Region Orientation Distribution Functions Using Eddy Current Data

  • Cold Dwell Fatigue of Titanium Alloy
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Abstract

Microtexture regions (MTRs) within titanium alloys are collections of grains with similar crystallographic orientation. The presence of MTRs can be detrimental to the life of an engine component; thus, a method for detecting and characterizing MTR is needed. Eddy current testing, a nondestructive evaluation method, is sensitive to changes in conductivity which are related to local changes in crystallographic orientation. Previous work has demonstrated the ability of eddy current testing to determine the orientation distribution function (ODF) of a simulated MTR within a simulated microstructure using approximate Bayesian computation techniques. This article will extend these methods to realistic MTR configurations. We review the ODF estimation technique, discuss modifications to the algorithm that are required to apply it to realistic microstructures and then demonstrate its use on simulated eddy current data of a real titanium specimen.

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Acknowledgements

The authors would like to acknowledge support from the Air Force Office of Scientific Research (AFOSR) through Grant 21RXCOR037 under the Dynamic Data and Information Processing (DDIP) program. In addition, Dr. Homa would like to acknowledge support from the Air Force Research Laboratory (AFRL) through Contract FA8650-19-F-5230.

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Authors and Affiliations

  1. University of Dayton Research Institute, Dayton, OH, 45469, USA

    Laura Homa

  2. Air Force Research Laboratory, WPAFB, Dayton, OH, 45433, USA

    Matthew Cherry & John Wertz

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  1. Laura Homa
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  2. Matthew Cherry
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Correspondence to Laura Homa.

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Homa, L., Cherry, M. & Wertz, J. Estimation of Realistic Microtexture Region Orientation Distribution Functions Using Eddy Current Data. JOM 74, 3693–3708 (2022). https://doi.org/10.1007/s11837-022-05360-7

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  • DOI: https://doi.org/10.1007/s11837-022-05360-7

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