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Erschienen in: Rock Mechanics and Rock Engineering 10/2022

13.07.2022 | Original Paper

An Adaptive and Reliable Guided Digital Volume Correlation Algorithm for Sandstone Based on 3D Scale-Invariant Feature Transform

verfasst von: Haizhou Liu, Lingtao Mao, Yang Ju, Fu-pen Chiang

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 10/2022

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Abstract

The digital volume correlation (DVC) method combined with X-ray computed tomography has evolved into a powerful technique for the interior deformation measurement of sandstone. The accuracy and precision of DVC measurements are influenced by the subset size and initial displacement estimate. In routine implementation, the subset size, which generally is not exact, especially for the complex heterogeneous deformation in sandstone, has to be fixed and defined by users according to prior experience. Furthermore, nearly all the existing methods for estimating the initial displacement estimate the displacement of a single calculation point and seldom estimate the initial displacements of all calculation points at once. Finding the optimal subset size and a reliable displacement initial displacement for all calculation points is, therefore, highly desirable to achieve accurate measurement of the internal deformation field. This study propose an adaptive DVC by introducing a three-dimensional scale-invariant feature transform (3D SIFT) as an effective tool for determining the subset size and initial displacement estimate simultaneously. The superiority of the proposed adaptive DVC over the classic one using the fixed subset size with regard to measurement accuracy is verified using numerical experiments with different-sized granlues, which can simulate the microstructure of sandstone. The credibility of the initial displacement estimate is also analyzed through the true Brazilian test of red sandstone.

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Literatur
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Zurück zum Zitat McBeck J, Kobchenko M, Hall SA, Tudisco E, Cordonnier B, Meakin P, Renard F (2018) Investigating the onset of strain localization within anisotropic shale using digital volume correlation of time-resolved X-ray microtomography images. J Geophys Res Solid Earth 123(9):7509–7528. https://doi.org/10.1029/2018jb015676CrossRef McBeck J, Kobchenko M, Hall SA, Tudisco E, Cordonnier B, Meakin P, Renard F (2018) Investigating the onset of strain localization within anisotropic shale using digital volume correlation of time-resolved X-ray microtomography images. J Geophys Res Solid Earth 123(9):7509–7528. https://​doi.​org/​10.​1029/​2018jb015676CrossRef
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Metadaten
Titel
An Adaptive and Reliable Guided Digital Volume Correlation Algorithm for Sandstone Based on 3D Scale-Invariant Feature Transform
verfasst von
Haizhou Liu
Lingtao Mao
Yang Ju
Fu-pen Chiang
Publikationsdatum
13.07.2022
Verlag
Springer Vienna
Erschienen in
Rock Mechanics and Rock Engineering / Ausgabe 10/2022
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI
https://doi.org/10.1007/s00603-022-02986-6

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