Quantitative Nonlinear Ultrasonic Spectroscopy for Imperfect Interfaces and Imperfect Bonding by Guided Waves

通过导波对不完美界面和不完美键合进行定量非线性超声光谱分析

• 批准号: 20360053
• 负责人: BIWA Shiro
• 金额: $ 9.9万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360053/
• 关键词: 非破壊評価; 超音波; 非線形特性; ラム波; ガイド波; 機械材料・材料力学; 高調波; 分散性; 時間領域差分解析; 不完全界面; 接触界面; 非線形界面モデル; レーザドップラー振動計測; バースト波

High-amplitude Lamb waves were excited on plates with contact or adhesive interfaces, and the propagated waveforms were analyzed by the time-frequency analysis to extract the nonlinear spectral components such as higher harmonics. As a result, the harmonic components were found to change their amplitude depending on the contact or adhesive conditions. Therefore, nonlinear Lamb wave characteristics are promising as a tool for evaluating the contact or adhesive conditions of plates. From a theoretical point of view, the flexural wave propagation was examined based on the Mindlin plate theory with nonlinear interface model. Furthermore, the conditions for cumulative growth of Lamb wave harmonics were derived based on the dispersion relation of Lamb waves.

在具有接触或粘合界面的板上激发高振幅兰姆波，并通过时频分析来分析传播的波形，以提取非线性谱分量，例如高次谐波。结果发现，谐波分量的振幅会根据接触或粘合条件而变化。因此，非线性兰姆波特性有望作为评估板的接触或粘合条件的工具。从理论角度来看，基于Mindlin板理论和非线性界面模型研究了弯曲波的传播。进一步，根据兰姆波的色散关系，推导了兰姆波谐波累积增长的条件。

项目成果

固体接触界面および損傷固体の非線形超音波伝搬特性

固体接触界面和受损固体的非线性超声传播特性

• 发表时间: 2010
• 作者: 琵琶志朗

Modeling of flexural wave propagation in a plate with contacting interfaces

具有接触界面的板中弯曲波传播的建模

• 发表时间: 2010
• 作者: S.Biwa; S.Kishiwada; C.Inserra; E.Matsumoto
• 通讯作者: E.Matsumoto

Harmonic generation in Lamb wave in a plate with contacting interfaces

具有接触界面的板中兰姆波的谐波产生

• 发表时间: 2009
• 作者: M.Eto; S.Biwa; E.Matsumoto
• 通讯作者: E.Matsumoto

Phase and group velocity matching for cumulative harmonic generation in Lamb waves

兰姆波中累积谐波产生的相位和群速度匹配

• 发表时间: 2011
• 作者: N.Matsuda; S.Biwa
• 通讯作者: S.Biwa

Nonlinear ultrasonic characterization of Lamb wave in a plate with contacting interfaces

具有接触界面的板中兰姆波的非线性超声表征

• 发表时间: 2009
• 作者: S.Kishiwada; S.Biwa; C.Inserra; E.Matsumoto
• 通讯作者: E.Matsumoto