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

アクセス数:365件（2025-07-16 16:43 集計）

固定URL: https://hdl.handle.net/11094/97154

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タイトル
Strain-field calculation based on X-ray CT images via point matching of impurities using Voronoi diagram
著者
NRID
1000080773340 1000080773340
ORCID
0000-0002-9369-6259 0000-0002-9369-6259
researchmap permalink
a_ishii a_ishii
Scopus Author ID
7201558020 7201558020
著者名
Ishii, Akio
NRID
1000050314836 1000050314836
ORCID
0000-0003-4573-9952 0000-0003-4573-9952
researchmap permalink
read0118558 read0118558
Scopus Author ID
7102628912 7102628912
著者名
Horikawa, Keitaro
NRID
1000030508461 1000030508461
著者名
Hoshino, Masato
NRID
1000080344399 1000080344399
著者名
Uesugi, Kentaro
キーワード等
X-ray CT
Strain field
Point matching
Voronoi diagram
内容
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.
抄録
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.
出版者
Elsevier BV
収録物名
Materialia
巻(号)
36
ページ
102175
刊行年月
2024-08-01
言語
英語
ハンドルURL
https://hdl.handle.net/11094/97154
PISSN
25891529
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1016/j.mtla.2024.102175
アクセス権
open access
権利情報
This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article