电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2015年
12期
71-73
,共3页
压电陶瓷%Lamb波%混叠信号%双面激励
壓電陶瓷%Lamb波%混疊信號%雙麵激勵
압전도자%Lamb파%혼첩신호%쌍면격려
piezoelectric ceramic%Lamb wave%aliasing signal%double side excitation
Lamb波在材料损伤检测方面的应用已相当成熟,对于损伤性质以及损伤位置的分析都是通过传感器接收到的损伤信号来判断的。但是实际检测中我们不可避免的会碰到小范围、近距离损伤探测,这时候无法做到合理的传感器布设来消除混叠信号。本文基于压电陶瓷,通过Lamb波激励模式优化,研究小范围、近距离的材料损伤检测。实验结果表明,在小范围、近距离的损伤检测中,运用双面激励方式比单面激励方式的效果好,精确度高。
Lamb波在材料損傷檢測方麵的應用已相噹成熟,對于損傷性質以及損傷位置的分析都是通過傳感器接收到的損傷信號來判斷的。但是實際檢測中我們不可避免的會踫到小範圍、近距離損傷探測,這時候無法做到閤理的傳感器佈設來消除混疊信號。本文基于壓電陶瓷,通過Lamb波激勵模式優化,研究小範圍、近距離的材料損傷檢測。實驗結果錶明,在小範圍、近距離的損傷檢測中,運用雙麵激勵方式比單麵激勵方式的效果好,精確度高。
Lamb파재재료손상검측방면적응용이상당성숙,대우손상성질이급손상위치적분석도시통과전감기접수도적손상신호래판단적。단시실제검측중아문불가피면적회팽도소범위、근거리손상탐측,저시후무법주도합리적전감기포설래소제혼첩신호。본문기우압전도자,통과Lamb파격려모식우화,연구소범위、근거리적재료손상검측。실험결과표명,재소범위、근거리적손상검측중,운용쌍면격려방식비단면격려방식적효과호,정학도고。
Lamb wave has been widely used in material damage detection, the damage signal received through the sensor can judge for all the damage properties and analysis of damage location. But the actual test,we will inevitably encounter small-scale,close damage detection. In this case,we can not do a reasonable layout to eliminate aliasing signal. In this paper,we use the piezoelectric ceramic incent acoustic wave on the plate,research on small-scale, close material damage detection.The experimental results show that in small-scale, close material damage detection,single-sided incentives compare to double-sided incentives has better effect,higher accuracy.