M. Rousseau, F. Coulouvrat, O. Lenoir, H. Khelil, J. Izbicki
{"title":"Vertical mode for an immersed structure composed of two elastic layers coupled by a thin water film","authors":"M. Rousseau, F. Coulouvrat, O. Lenoir, H. Khelil, J. Izbicki","doi":"10.1109/ULTSYM.1994.401754","DOIUrl":null,"url":null,"abstract":"We aim at evaluating the thickness of a thin water film, coupling two elastic layers. By a plane acoustic wave approach, we have shown the existence of a particular eigen-mode, called the vertical mode (V-mode), which strongly depends on the fluid layer. The water film thickness is expressed as a function of the V-mode cut-off frequency. The value of this particular frequency is experimentally obtained by a retrodiffusion and resonance spectra analysis. However, in practice, the acoustic waves propagate as a bounded beam, and it is necessary to show that the measurement accuracy remains compatible with a plane wave approach","PeriodicalId":394363,"journal":{"name":"1994 Proceedings of IEEE Ultrasonics Symposium","volume":"81 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1994 Proceedings of IEEE Ultrasonics Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ULTSYM.1994.401754","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
We aim at evaluating the thickness of a thin water film, coupling two elastic layers. By a plane acoustic wave approach, we have shown the existence of a particular eigen-mode, called the vertical mode (V-mode), which strongly depends on the fluid layer. The water film thickness is expressed as a function of the V-mode cut-off frequency. The value of this particular frequency is experimentally obtained by a retrodiffusion and resonance spectra analysis. However, in practice, the acoustic waves propagate as a bounded beam, and it is necessary to show that the measurement accuracy remains compatible with a plane wave approach