Two-dimensional Moiré phase analysis for accurate strain distribution measurement and application in crack prediction

Qinghua Wang, Shien Ri, Hiroshi Tsuda, Motomichi Koyama, Kaneaki Tsuzaki

研究成果: Contribution to journalArticle査読

23 被引用数 (Scopus)

抄録

Aimed at the low accuracy problem of shear strain measurement in Moiré methods, a two-dimensional (2D) Moiré phase analysis method is proposed for full-field deformation measurement with high accuracy. A grid image is first processed by the spatial phase-shifting sampling Moiré technique to get the Moiré phases in two directions, which are then conjointly analyzed for measuring 2D displacement and strain distributions. The strain especially the shear strain measurement accuracy is remarkably improved, and dynamic deformation is measurable from automatic batch processing of single-shot grid images. As an application, the 2D microscale strain distributions of a titanium alloy were measured, and the crack occurrence location was successfully predicted from strain concentration.

本文言語英語
ページ(範囲)13465-13480
ページ数16
ジャーナルOptics Express
25
12
DOI
出版ステータス出版済み - 6 12 2017

All Science Journal Classification (ASJC) codes

  • 原子分子物理学および光学

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