森林工程2026，Vol.42Issue(3)：521-529,9.DOI:10.7525/j.issn.1006-8023.2026.03.008
基于虚拟时间反演技术的木板损伤定位
Damage Localization of Wooden Boards Based on Virtual Time Reversal Technology
摘要
Abstract
Aiming at the problem of requiring two excitation signals in traditional time-reversal algorithms,a method is proposed to simplify experimental procedures while improving the accuracy of damage localization in wooden boards.A single-input single-receive virtual time reversal(VTR)technique is developed,which replaces the physical time-rever-sal process with signal operations.The correlation coefficient between the reconstructed signal obtained via virtual time reversal and the excitation signal is defined as a damage index(Ds).Combined with ultrasonic probabilistic imaging,this method enables precise localization of damage in wooden boards.Numerical simulations and experiments demon-strate that signals can achieve virtual focusing at the damage locations,significantly enhancing localization accuracy.The VTR technique not only streamlines the experimental process but also effectively improves damage localization,pro-viding a practical reference for engineering applications.关键词
虚拟时间反演/损伤定位/概率成像/木板/定位精度/无损检测,压电传感,信号重构Key words
Virtual time reversal/damage localization/probabilistic imaging/board/positioning accuracy/nondestruc-tive testing/piezoelectric sensor/signal reconstruction分类
农业科技引用本文复制引用
许青云,韩芳,刘亮..基于虚拟时间反演技术的木板损伤定位[J].森林工程,2026,42(3):521-529,9.基金项目
湖北省重点实验室基金项目(Y201904). （Y201904）
