{"title":"利用平衡检测DPP-BOTDA方法对铝矩形板进行模态分析","authors":"A. Minardo, A. Coscetta, L. Zeni, R. Bernini","doi":"10.1109/FOTONICA.2014.6843913","DOIUrl":null,"url":null,"abstract":"In this work we report an experimental modal analysis of an aluminum rectangular plate, carried out by use of the balanced-detection DPP-BOTDA method based on double-pulse pump waveform, combined with the Slope-Assisted BOTDA technique. Compared to standard DPP-BOTDA, the balanced-detection DPP-BOTDA method allows to retrieve the differential Brillouin gain in real time, i.e. without the need of post-processing differentiation, therefore allowing its combination with the Slope-Assisted BOTDA technique. The experimental mode shape of the first resonance of the aluminum plate is compared to numerical results based on a finite-element analysis (FEA), demonstrating that the proposed technique is well suited to perform the modal analysis of a vibrating structure.","PeriodicalId":125701,"journal":{"name":"2014 Fotonica AEIT Italian Conference on Photonics Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modal analysis of an aluminum rectangular plate by use of the balanced-detection DPP-BOTDA method\",\"authors\":\"A. Minardo, A. Coscetta, L. Zeni, R. Bernini\",\"doi\":\"10.1109/FOTONICA.2014.6843913\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this work we report an experimental modal analysis of an aluminum rectangular plate, carried out by use of the balanced-detection DPP-BOTDA method based on double-pulse pump waveform, combined with the Slope-Assisted BOTDA technique. Compared to standard DPP-BOTDA, the balanced-detection DPP-BOTDA method allows to retrieve the differential Brillouin gain in real time, i.e. without the need of post-processing differentiation, therefore allowing its combination with the Slope-Assisted BOTDA technique. The experimental mode shape of the first resonance of the aluminum plate is compared to numerical results based on a finite-element analysis (FEA), demonstrating that the proposed technique is well suited to perform the modal analysis of a vibrating structure.\",\"PeriodicalId\":125701,\"journal\":{\"name\":\"2014 Fotonica AEIT Italian Conference on Photonics Technologies\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-05-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2014 Fotonica AEIT Italian Conference on Photonics Technologies\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/FOTONICA.2014.6843913\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 Fotonica AEIT Italian Conference on Photonics Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FOTONICA.2014.6843913","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Modal analysis of an aluminum rectangular plate by use of the balanced-detection DPP-BOTDA method
In this work we report an experimental modal analysis of an aluminum rectangular plate, carried out by use of the balanced-detection DPP-BOTDA method based on double-pulse pump waveform, combined with the Slope-Assisted BOTDA technique. Compared to standard DPP-BOTDA, the balanced-detection DPP-BOTDA method allows to retrieve the differential Brillouin gain in real time, i.e. without the need of post-processing differentiation, therefore allowing its combination with the Slope-Assisted BOTDA technique. The experimental mode shape of the first resonance of the aluminum plate is compared to numerical results based on a finite-element analysis (FEA), demonstrating that the proposed technique is well suited to perform the modal analysis of a vibrating structure.
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