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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 黃心豪(Hsin-Haou Huang) | |
| dc.contributor.author | Po-Jen Tsai | en |
| dc.contributor.author | 蔡博任 | zh_TW |
| dc.date.accessioned | 2023-03-19T22:24:54Z | - |
| dc.date.copyright | 2022-09-08 | |
| dc.date.issued | 2022 | |
| dc.date.submitted | 2022-09-02 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/84772 | - |
| dc.description.abstract | 針對結構進行結構的監測與安全評估，及時確定安全隱患，建立一套安全評估系統尤為重要。結構損傷監測，內容包括損傷識別、損傷數量和損傷量化，損傷監測系統將有助於降低維護成本，而蘭姆波為損傷監測技術中一種有效的方法。 本文講述了蘭姆波的沿革與理論及其在損傷檢測技術的應用，這一領域研究內容包含感測技術以及訊號處理。本文的研究內容是針對鋁板以及玻璃纖維複合材料板進行損傷區域定位，實驗在鋁板、複合材料板表面貼附PZT壓電片以及PZT壓電片嵌入複合材料內部量測蘭姆波訊號。首先進行蘭姆波群速度量測結果與數值結果進行比較，之後進行了蘭姆波一維損傷定位。還使用PZT陣列並透過損傷指標、連續小波轉換方法得到各子區域損傷指標，達到結構多損傷定位的目的。此外，比較鋁板與複合材料板的結果，結果鋁板更適合這種方法。對鋁板和複合板進行損傷量化。最後，將PZT嵌入複合材料內部以改善機電耦合。 | zh_TW |
| dc.description.abstract | It is important to establish a set of safety evaluation system for structure monitoring and safety evaluation to identify hidden dangers in time. Structural damage monitoring, including damage identification, damage quantity and damage quantification, damage monitoring system will help reduce maintenance costs, and Lamb wave provides an effective method for damage monitoring technology. This paper describes the evolution and theory of Lamb wave and its application in damage detection technology, which includes sensing technology and signal processing. The research content of this paper is to locate the damaged area of the aluminum plate and the glass fiber composite plate. Firstly, the Lamb wave group velocity measurement results are compared with the numerical results, and then the Lamb wave one-dimensional damage location is carried out. The PZT array is also used to obtain the damage index of each sub-region through the damage index and continuous wavelet transform method, so as to achieve the purpose of multi-damage localization of the structure. In addition, comparing the results of the aluminum plate with the composite plate, it turns out that the aluminum plate is more suitable for this method. Damage quantification for aluminum and composite panels. Finally, PZT was embedded inside the composite to improve the electromechanical coupling. | en |
| dc.description.provenance | Made available in DSpace on 2023-03-19T22:24:54Z (GMT). No. of bitstreams: 1 U0001-3008202214354100.pdf: 6912358 bytes, checksum: 03184247d22f69c7f071746afc94ff99 (MD5) Previous issue date: 2022 | en |
| dc.description.tableofcontents | 口試委員會審定書 i 誌謝 ii 中文摘要 iii 英文摘要 iv 目錄 v 圖目錄 vii 表目錄 xii 第一章 簡介 1 1.1 動機 1 1.2 研究背景 2 1.3 研究目的 2 1.4 重要性與貢獻 3 1.5 名詞對照與符號說明 3 第二章 文獻探討 8 2.1 沿革 8 2.2 蘭姆波基本理論 9 2.3 應用壓電片的激勵與感測蘭姆波 15 2.4 基於蘭姆波的主動式檢測技術 17 2.5 嵌入式壓電片應用於損傷監測 21 第三章 研究方法 24 3.1 研究流程 24 3.2 嵌入式壓電片複合材料板製作 25 3.3 蘭姆波量測實驗 29 3.4 損傷定位方法 39 第四章 研究結果 46 4.1 蘭姆波群速度量測結果 46 4.2 一維蘭姆波損傷定位結果 60 4.3 PZT陣列區域損傷定位結果 68 第五章 討論 85 5.1 鋁板與複合材料板區域損傷定位能力比較 85 5.2 DI值的加權與校正討論 86 5.3 嵌入式與表面貼附PZT複合材料板的DI值對比 88 第六章 結論與未來展望 92 6.1 結論 92 6.2 未來展望 94 第七章 參考文獻 95 | |
| dc.language.iso | zh-TW | |
| dc.subject | 飛行時間 | zh_TW |
| dc.subject | 蘭姆波 | zh_TW |
| dc.subject | 損傷定位 | zh_TW |
| dc.subject | 時頻分析 | zh_TW |
| dc.subject | 壓電元件陣列 | zh_TW |
| dc.subject | damage localization | en |
| dc.subject | Lamb waves | en |
| dc.subject | piezoelectric element arrays | en |
| dc.subject | time-of-flight | en |
| dc.subject | time-frequency analysis | en |
| dc.title | 應用壓電元件進行蘭姆波時頻分析方法之損傷定位方法建立 | zh_TW |
| dc.title | Using Piezoelectric Elements for Establishment of Damage Localization Method based on Lamb Wave Time-Frequency Analysis | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 110-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 王昭男(Chao-Nan Wang),楊舜涵(Shun-Han Yang),黃勝翊(Hseng-Ji Huang) | |
| dc.subject.keyword | 蘭姆波,壓電元件陣列,飛行時間,時頻分析,損傷定位, | zh_TW |
| dc.subject.keyword | Lamb waves,piezoelectric element arrays,time-of-flight,time-frequency analysis,damage localization, | en |
| dc.relation.page | 96 | |
| dc.identifier.doi | 10.6342/NTU202202971 | |
| dc.rights.note | 同意授權(限校園內公開) | |
| dc.date.accepted | 2022-09-02 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
| dc.date.embargo-lift | 2027-09-01 | - |
| 顯示於系所單位： | 工程科學及海洋工程學系 | |
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