A spatial filter and two linear PZTs arrays based composite structure imaging method

摘要：

　　A spatial filter and two linear PZTs arrays based structural imaging method for damage and impact localization of composite structure is proposed in this paper.This method can be realized without using the Lamb wave group velocity.In this innovative method, two linear PZTs arrays are adopted to acquire Lamb wave signals generated by damage or impact.The angle of damage or impact position relative to each array is obtained by a spatial wavenumber filtering method.And then, the damage or impact coordinate image can be obtained by fusing the damage or impact angle image of each array.Lastly, the impact or damage position is estimated by the coordinate probability weighted algorithm.This method is verified on a carbon fiber composite laminate plate.The localization results are in good agreement with the actual damage and impact occurring positions, and the maximum distance error of localization is no more than 1 cm.

关键词： composite structures structural imaging spatial filter linear PZTs array

作者: Qiu Lei Yuan Shenfang Liu Bin

作者单位: The State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aer The State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aer

会议类型: 国际会议

会议名称: the International Conference Vibroengineering-2014

会议地点: 贵阳

会议语种:英文

页码: 101-106

在线出版日期: 2014-11-07（万方平台首次上网日期，不代表论文的发表时间）