Defect detection of concrete in infrastructure based on Rayleigh wave propagation generated by laser-induced plasma shock waves
Defect detection of concrete in infrastructure based on Rayleigh wave propagation generated by laser-induced plasma shock waves
复制标题
基于激光诱导等离子体冲击波产生的瑞利波传播的基础设施混凝土缺陷检测
DOI：
10.1016/j.ijmecsci.2021.107039
复制
发表时间：
2022
影响因子：
7.3
通讯作者：
Masaharu Nishikino
中科院分区：
文献类型：
--
作者：
Sho Wakata;Naoki Hosoya;Noboru Hasegawa;Masaharu Nishikino
大型混凝土结构的缺陷，包括桥梁和隧道等关键基础设施，传统上是通过检查员的锤击测试来检测的。然而，结果取决于视察员的技能。此外，锤击测试在短时间内彻底检查大型结构是不切实际的。本文利用激光诱导等离子体（LIP）产生的冲击波实现了混凝土结构缺陷的遥测检测。LIP是通过在混凝土表面附近照射Nd：YAG脉冲激光产生的。当LIP以超快的速度扩散到周围区域时，会产生球形冲击波。该冲击波在混凝土结构上实现非接触、非破坏性的脉冲激振力。用激光多普勒测振仪（LDV）测量了混凝土结构的响应。将该方法应用于人造混凝土试件的缺陷检测，可以识别出缺陷的固有频率和振型。通过测量由LIP冲击波产生的瑞利波的传播，检测缺陷以及缺陷部分和无缺陷部分之间的边界的大致位置。
Defects in large concrete structures, including critical infrastructure such as bridges and tunnels, are traditionally detected by hammering tests by inspectors. However, the results depend on the inspectors’ skills. Additionally, hammering tests are impractical to thoroughly inspect massive structures in a short time. Herein defect detection in concrete structures is realized by telemetry using shock waves generated by laser-induced plasma (LIP). LIP is generated by irradiating a Nd:YAG pulsed laser near the concrete surface. As LIP spreads to the surrounding area at an ultrafast speed, a spherical shock wave is generated. This shock wave realizes a non-contact, non-destructive impulse excitation force on a concrete structure. The response of the concrete structure is measured with a laser Doppler vibrometer (LDV). Applying this method to detect defects in an artificial concrete specimen can identify the natural frequencies and modes of the defects. By measuring the propagation of the Rayleigh waves generated by the LIP shock waves, defects and the approximate location of the boundary between the defective part and the defect-free part are detected.
登录
查看更多内容
具有固定电压基波幅度差的非线性超声相控阵用于闭合裂纹的高选择性成像。
DOI：
10.1121/1.5116017
发表时间：
2019
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Y. Ohara;Hiromichi Nakajima;S. Haupert;T. Tsuji;T. Mihara
通讯作者：
T. Mihara
影响因子：
10.5
作者：
Blaney, Sean;Gupta, Rishi
通讯作者：
Gupta, Rishi
影响因子：
10.5
作者：
Langenberg, K. J.;Mayer, K.;Marklein, R.
通讯作者：
Marklein, R.
影响因子：
1.5
作者：
Akamatsu, Ryo;Sugimoto, Tsuneyoshi;Katakura, Kageyoshi
通讯作者：
Katakura, Kageyoshi
影响因子：
6.9
作者：
Yasuda, Naotoshi;Misaki, Norikazu;Yamaoka, Daiki
通讯作者：
Yamaoka, Daiki