表面SH波音弾性法における表面異方性を用いた無応力時の伝搬速度推定による主応力測定

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2024/09/01

タイトル(英語): Principal Stress Measurement by Propagation Velocity Estimation at No Stress Using Surface Anisotropy in Surface SH Wave Acoustoelasticity

著者名: 武本　航樹（和歌山大学大学院システム工学研究科），新宮　朋史（和歌山大学大学院システム工学研究科），村田　頼信（和歌山大学システム工学部）

著者名(英語): Kohki Takemoto (Graduate School of Systems Engineering, Wakayama University), Tomofumi Shingu (Graduate School of Systems Engineering, Wakayama University), Yorinobu Murata (Faculty of Systems Engineering, Wakayama University)

キーワード: 超音波，音弾性法，表面SH波音弾性法，応力測定，表面異方性　　ultrasonic wave，acoustoelasticity，surface SH-wave acoustoelasticity，stress measurement，surface anisotropy

要約(英語): The surface SH-wave acoustoelasticity is one of the acoustoelastic methods, which is a stress measurement method based on the phenomenon that the propagation velocity of elastic waves changes depending on the stress state. Surface SH-wave acoustoelasticity can measure the principal stress difference from the difference in propagation velocities of surface SH waves propagating in two orthogonal directions, but it cannot measure the principal stress itself. However, if the propagation velocity of the surface SH-wave in the stress-free state is known, it is possible to measure the principal stress in the surface SH-wave acoustoelastic method. Therefore, in this study, we attempted to measure the principal stress using the surface SH-wave acoustoelasticity by estimating the propagation velocity in the stress-free state using surface anisotropy, which is a stress-independent parameter of the surface structure. Experimental results demonstrated the possibility of using surface anisotropy to estimate the propagation velocity in the stress-free state and measure the principal stress within ±10 MPa as well as the principal stress difference.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.144 No.9 （2024） 特集：知能メカトロニクス分野と連携する知覚情報技術

本誌掲載ページ: 875-879 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/144/9/144_875/_article/-char/ja/