关键词:半解析有限元;兰姆波;频散曲线;相速度;群速度 中图分类号:TB553文献标识码:A 国家标准学科分类代码:140.20 of fiIliteelement LambwaVe curVes Semi-analyticalanalysis dispersion Xu Zujun,Zhu Xining,Yu Liqiang,ShiHongmei sc,looz矿胁c^8n如Ⅱf,眈c打口n瑟Ⅱ砌con￡rofE凡舒舶e—ng,&讲增.,沉。
Lamb wave-based damage localization and quantification algorithms for cfrp composite structures. COMPOSITE STRUCTURES. [51] Draudviliene, et al.(2021). Estimation of the lamb wave phase velocity dispersion curves using only two adjacent signals. Composite Structures. [52] Li, et al.(2022). ...
“Measuring Lamb wave dispersion curves of a bi-layered plate and its application on material characterization of coating.” IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control (2001). 830-837. 64. K. Mizutani and K. Toda. “Analysis of Lamb Wave Propagation Characteristics in ...
lamb waveUltrasonic Lamb waves provide a useful means for the nondestructive determination of the material elastic constants of shell structures such as plates, pipes, cans and many others. A new optical technique is described for the measurement of the dispersion curves of Lamb wave modes. The ...
Fig.7 Dispersion curves and working point of Lamb waves 搭建实验装置如图8所示。EMAT的激励和信号处理设备为零声科技(苏州)有限公司研制的EMAT-2000便携式电磁超声探伤仪,主要技术参数见表3,参数完全满足实验要求。被测试件为1mm厚的6061铝板。换能器为一发一收,发射接收EMAT的参数完全一致,中心间距为s=200mm。
Fig.4 Dispersion curves of Lamb wave in steel plate 2.2 外置永磁体对多阵元Lamb波EMAT脉冲压缩性能的影响 在基于Barker码脉冲压缩技术的多阵元Lamb波EMAT中,保证每个阵元激励出的Lamb波信号与对应Barker码码元的一致性是提高脉冲压缩效果的关键。由于每个阵元的磁场分布并不均匀,且各个阵元间的磁场分布不相同,...
NumericalCalculationandExperimentalValidationforLambWaveDispersionCurves YANShi,ZHANCHai-feng,MENGYan-yu’’ (1.SchoolofCivilEngineering,ShenyangJianzhuUniversity,Shenyang110168,China; 2.SchoolofHydraulicandCivilEngineering,DalianUniversityofTechnology,Dalian116024,China; ...
(1):12095-12104.HAYASHIT,ENDOHS.CalculationandvisualizationofLambwavemotion[J].Ultrasonics,2000,38(1):770-773.SANDERSONR.Aclosedformsolutionmethodforrapidcalculationofguidedwavedispersioncurvesforpipes[J].WaveMotion,2015,53:40-50.ZHUKAIGE,FANGDAINING.Calculationofdispersioncurvesforarbitrarywaveguidesusing...
Further A-C characterization of composite plates has been carried out by Castaings and Hosten [101], where again Lamb wave dispersion curves are reconstructed and stiffnesses inferred. A further extension of this work by the same authors [102] is seen in a later work, where finite-element ...
and the propagation of Lamb waves in damaged aluminum plate was simulated by using finite element software ABAQUS.The results show that WFT can effectively compress dispersed wave-packets,and high-resolution damage imaging can be obtained by the proposed method.%Lamb波在结构健康监测中受到广泛关注,但...