Strain-field calculation based on X-ray CT images via point matching of impurities using Voronoi diagram

Ishii, Akio; Horikawa, Keitaro; Hoshino, Masato et al.

Materialia, 2024, 36, 102175

Number of Access:403（2025-08-29 08:17 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/97154

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Title
Strain-field calculation based on X-ray CT images via point matching of impurities using Voronoi diagram
Creator
NRID
1000080773340 1000080773340
ORCID
0000-0002-9369-6259 0000-0002-9369-6259
researchmap permalink
a_ishii a_ishii
Scopus Author ID
7201558020 7201558020
CreatorName
Ishii, Akio
NRID
1000050314836 1000050314836
ORCID
0000-0003-4573-9952 0000-0003-4573-9952
researchmap permalink
read0118558 read0118558
Scopus Author ID
7102628912 7102628912
CreatorName
Horikawa, Keitaro
NRID
1000030508461 1000030508461
CreatorName
Hoshino, Masato
NRID
1000080344399 1000080344399
CreatorName
Uesugi, Kentaro
Subject
X-ray CT
Strain field
Point matching
Voronoi diagram
Description
Ishii Akio, Horikawa Keitaro, Hoshino Masato, et al. Strain-field calculation based on X-ray CT images via point matching of impurities using Voronoi diagram. Materialia 36, 102175 (2024); https://doi.org/10.1016/j.mtla.2024.102175.
Abstract
We propose an approach for calculating the strain field inside materials using X-ray computed tomography (CT) images obtained during deformation tests. Our approach is based on the point matching of the detected impurities from the CT images, and the points in the reference and deformed CT images are used to construct a Voronoi diagram. In addition to the change in distance between the reference and deformed points, the volume and shape of the Voronoi polyhdra at each point are used for point matching. By applying the proposed method to a notched Al alloy sample, we calculated the change in the strain field around the notch during deformation in a tensile test using X-ray CT images, and our method was validated.
Publisher
Elsevier BV
Source Title
Materialia
Volume (Issue)
36
Page
102175
Date of Issued
2024-08-01
Language
English
Handle URL
https://hdl.handle.net/11094/97154
PISSN
25891529
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.mtla.2024.102175
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article